Noisebridge - User contributions [en]

Noisebridge

2009-10-30T03:42:54Z

Cmaier:

__NOTOC__ __NOEDITSECTION__ [[Image:Noisebridge tools.jpg|thumb|right|A space to learn and create neat things]]
[[Image:2169mission.jpg|thumb|right|Front door to NEW space at 2169 Mission]]
[[Image:Noisebridge_Soldering_Workshop.jpg|thumb|right|Soldering workshop at Noisebridge]]
[[Image:Noisebridge air.jpg|thumb|right|Members at Noisebridge]]
[[Image:Skittlevodka.jpg|thumb|right|Hacking, it's more than just electronics]]
[[Image:Starfive - q's noisebridge project.jpg|thumb|right|Craft hacking]]
[[Image:NoisebridgeAtJiNing.jpg|thumb|right|Only Noisebridge could go to China ...]]
[[Image:ChinaNoiseBunnies.jpg|thumb|right|... and visit production facilities near Shanghai]]
[[Image:CulturalLearnings.jpg|thumb|right|Cultural Learnings of China for Make Benefit Glorious Hackerspace of Noisebridge
]]
''Noisebridge is an infrastructure provider for technical-creative projects, collaboratively run by its members. We are incorporated as a non-profit educational corporation for public benefit.'' [[Noisebridge_Vision|Read more about Noisebridge...]]

'''[[Mailinglist|Join the Noisebridge mailing list]] or hop on [[IRC]] to hear about upcoming events and to get involved.'''

'''[[Noisebridge Membership|Become a member]]! -- [[New Member FAQ]]!'''

'''[[Donate or Pay Dues| How to Donate money or Pay Membership Dues]].'''

'''Press: Please see our [[Press Kit]] - Includes press contacts, pictures, background info, etc.'''

== NEWS: 2169 Mission Open For Hacking! ==
The Noisebridge space is at 18th & Mission, only two blocks from 16th St BART (and from our previous space)! See [[Moving/2169 Mission|2169 Mission, San Francisco]] for details. Would you like to help us build it out? Check the [[Moving/2169_Mission/Buildout | buildout]] page or aid by making a [[Donate or Pay Dues|donation]].

If you have a key for our old space at 83C, you can use it to get into 2169 Mission right now! Be warned that there is still construction going on, but you can help out with that to make it go away faster.

== Events and Classes ==
'''[[:Category:Events|Full Event Listing]]''' | '''[http://www.google.com/calendar/embed?src=vo3i3c0qtjnkjr2ojasd0ftt8s%40group.calendar.google.com&ctz=America/Los_Angeles Unofficial Google Calendar]'''


{{:Category:Events}}

Want to host your event at Noisebridge? We like seeing classes and talks on interesting things pertaining to wide subject of hacking. Most of all we like seeing familiar faces, please participate in the space and our [[Noisebridge#Meetings|weekly Tuesday meetings]] to see if we're the right audience for what you want to share before announcing a new event. Additionally here are some [[Hosting an Event]] tips.

== Info ==
[[Getting Here]]: We're at 2169 Mission Street between 17th Street and 18th Street in San Francisco's Mission district, on the third floor. [http://openstreetmap.org/?mlat=37.762352&mlon=-122.419372&zoom=16 openstreetmap] [http://maps.google.com/?q=2169+mission+St,+94103 Google Maps]

[[Planet Noisebridge]]: [https://www.noisebridge.net/planet/ Our blog aggregation service].

[[The Space]]: Home sweet home (including our network drops [[Network]]).

[[The Neighborhood]]: Nearby restaurants and other businesses.

[[Noisebridge_Vision|Vision]]: Our vision - what our space is all about!

[[Safety|Safety in the Space]]: What to do in case of an emergency.

[[Resources]]: Stuff we provide -- servers, bulk parts orders from Digikey/McMaster/Mouser, project spaces, specialized tools.

[[Library]]: Information pertaining to projects we're working on.

[[Concepts]]: A place to share your project ideas and to find like-minds.

[[Donate or Pay Dues]]: Here is where you can see how easy it is to Donate to Noisebridge or to pay your monthly Membership Dues.

[[House Keeping]]: Information on Housekeeping.

[[Identity]]: Logos, stickers, t-shirts and stuff.

[[Press Coverage]]: mentions of Noisebridge in the media (both blog and dead tree).

[[Hackerspace Infos]]: Howtos, Background, and friendly Hackerspaces elsewhere.

[[Board and Officers]]: Information about our formal organization.

== Meetings ==
'''Meetings every Tuesday at 8 PM US/Pacific at [[Getting Here (2169)|2169 Mission St., San Francisco]]''' This meeting is for members and non-members alike, everyone is welcome. Agenda items tend to typically include introductions, updates on projects happening in the space and upcoming events. Meetings normally end with general socializing and in depth discussion of any topics brought up earlier. We try to keep the formal part under 1 hour and socialize the rest of the evening.
* Prev: [[Meeting Notes 2009 10 20 | 2009-10-20]]
* Next: [[Meeting Notes 2009 10 27 | 2009-10-27]]
* ... (more in the [[:Category:Meeting Notes|Meeting Notes Archive]])

== Get in Touch ==
* [[IRC|IRC channel]] - irc://chat.freenode.net/#noisebridge
* [[Mailinglist]] - Best way to keep informed of upcoming events
* [[People]]
* [https://www.facebook.com/group.php?gid=100998755576 Facebook group]
* [[Twitter]]
* [[MemoryHole|Legal Requests (information removal, etc)]]
Or just [[Getting Here|drop by the space]]. We're here almost all the time, although evenings are best.

== Status ==
'''Noisebridge is up!''' We began building Noisebridge in Feb 2007. Since December 2007 we've had regular Tuesday meetings, and as of October 1st 2008, we have a physical space. We are a tax-exempt 501(c)(3) organization as of July 2009, retroactive October 2008.

== Emergency ==
<SPAN style="color: #ff0000; font-size: 18px;">[[Safety|In Case of Emergency]]</SPAN>

File:CulturalLearnings.jpg

2009-10-30T03:39:23Z

Cmaier: Cultural Learnings of China for Make Benefit Glorious Hackerspace of Noisebridge

Cultural Learnings of China for Make Benefit Glorious Hackerspace of Noisebridge

File:NoisebridgeAtJiNing.jpg

2009-10-30T03:32:47Z

Cmaier: Noisebridge at the Water Margin

Noisebridge at the Water Margin

File:ChinaNoiseBunnies.jpg

2009-10-30T03:27:42Z

Cmaier: Only Noisebridge could go to China (and dress up in bunny suits)

Only Noisebridge could go to China
(and dress up in bunny suits)

ChinaTrip

2009-10-25T17:01:21Z

Cmaier:

ChinaTripPreparations

2009-10-25T16:54:04Z

Cmaier: New page: = How to purchase an airplane ticket for $694 (if there are any of these remaining) = ''If you want to go on this trip, I would recommend buying your airplane ticket ASAP'', since these c...

= How to purchase an airplane ticket for $694 (if there are any of these remaining) =

''If you want to go on this trip, I would recommend buying your airplane ticket ASAP'', since these cheap seats might not be available after today. Other seats may be available for $900 on other Airlines, such as Northwest Airlines. But it would be nicer if we all flew in together to Shanghai on the same plane.

(as of 9/25, cost for these flights now $793 [[User:Jtfoote|Jtfoote]] 11:58, 25 September 2009 (PDT))

Here is the itinerary for my $693.50 ticket:<br>
'''Leave SFO''': Tuesday, October 20, 2009, 1:15pm<br>
'''Arrive Shanghai (PVG)''': Wednesday October 21, 8:55pm<br>
<br>
'''Leave Beijing (PEK)''': Tuesday, November 3, 2009, 11:55am<br>
'''Arrive SFO''': Tuesday, November 3, 10:00am<br>
<br>
'''''NOTE''': we arrive in '''Shanghai''', but return from '''Beijing'''''

(as of 9/25, cost for these flights now $793 J [[User:Jtfoote|Jtfoote]] 11:58, 25 September 2009 (PDT))

== Here's how Mitch got his plane tickets for $693.50: ==
* go to [http://www.kayak.com/ Kayak.com]
* Click on the "Multi-city" radio-button.
* Fill in the first two lines like this:
** From: SFO To: PVG Leave: 10/20/09 Time: Anytime
** From: PEK To: SFO Leave: 11/03/09 Time: Anytime
* Click the "Search" button.
* If cheap seats are still available, the first item on the resulting screen (after a few false screens are possibly displayed first) will be the flight from Asiana Airlines for '''$694'''.
* Click on "'''select'''", which is underneath "$694". You can use Orbitz or CheapTickets or Expedia to purchase the tickets (Kayak does not charge anything). I used CheapTickets. Click the "'''Go'''" button.
* You are redirected to the site of your choice, where you can purchase the ticket.

=== Orbitz spake thusly to [[user:cmaier | Christoph]]: ===

(as of 9/25, cost for these flights now $793 [[User:Jtfoote|Jtfoote]] 11:56, 25 September 2009 (PDT))

;Total flight cost: $731.64 USD ''(oops, didn't pay attention and didn't unclick some sort of insurance)''
;Flight 1: Tuesday, October 20, 2009
:Asiana Airlines 213 Economy | Boeing 777 (777) | 12hr 10min | 5639 miles
:;Depart: 1:15pm San Francisco, CA San Francisco International (SFO)
:;Arrive: 5:25pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 2hr 35min
:Asiana Airlines 367 Economy | Airbus Industrie A321 (321) | 1hr 55min | 522 miles
:;Depart: 8:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 8:55pm Shanghai, China Shanghai PuDong (PVG)
:Your flight is confirmed. The airline is assigning seats at check-in
:This is an overnight flight.
:Total duration: 16hr 40min | Total miles: 6161 miles
;Flight 2: Tuesday, November 3, 2009
:Asiana Airlines 334 Economy | Boeing 777 (777) | 2hr 5min | 567 miles
:;Depart: 11:55am Beijing, China Beijing Capital (PEK)
:;Arrive: 3:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 1hr 45min
:Asiana Airlines 214 Economy | Boeing 777 (777) | 10hr 15min | 5639 miles
:;Depart: 4:45pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 10:00am San Francisco, CA San Francisco International (SFO)
:Your flight is confirmed. The airline is assigning seats at check-in
:This flight departs from a different airport.
:Total duration: 14hr 5min | Total miles: 6206 miles

= How to get a visa for going to China =

== To go to China, you need to have a visa! ==

=== To get a visa, you need to have a passport. ===

Your passport needs to have at least 6 months before expiration.

=== Getting a visa from the [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ San Francisco Consulate] ===

For this trip, a [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/zgqz/t48485.htm one time entry tourist visa] will do. (Make sure you say that you are going as a tourist, otherwise it is a pain!)

The [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ Consulate General of the People's Republic of China in San Francisco] is at [http://www.fmprc.gov.cn/ce/cgsf/eng/about/t50487.htm Geary Expressway and Laguna].

If you have Simplified Chinese for Adobe Acrobat installed, you can download a [http://sanfrancisco.china-consulate.org/chn/qianzhen/t554559.htm form] from the Chinese consulate general website, and bring it in to their consulate office (If you don't have Simplified Chinese for Adobe Acrobat, the form won't print, but the consulate has paper versions of the form).

They also want a ''real'' photograph for the form. A color printout on regular paper won't do. The consulate information desk person can take 4 passport photos for $10.

Their visa office is [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm a little uphill on Geary towards Geary Court]. When you walk in, you have to pass a metal detector, where you're checked for stuff like Swiss Army knives and digital cameras.

You need to take a number (which isn't totally obvious), and when they call you, you walk up to the displayed teller window and give them your filled out paperwork (what you downloaded from their website or filled in while you were waiting) and your passport (which they keep for a while - the more you pay them, the shorter you have to wait, but it's at least one day), and you may also need to bring a printout for your plane ticket (seems to be optional, [[user:Cmaier | Christoph]] got his visa without the ticket).

If you're a foreigner, they want a copy of your Green Card (or probably the other visa that will get you admitted back into the US and A). There's a photocopier in the office, for a quarter a copy.

You go back some days later, and they give you your passport with the visa pasted in, after you [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t535529.htm pay them] [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t580026.htm with check or credit card, '''no cash''']. You don't even have to pick a number this time.

Their hours are usually [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm weekdays 9-12, 13-15], but they have some [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t527658.htm non-obvious holidays (for 2009)], so check them out on the website.

Again, be sure to apply for a single entry tourist visa. Other visa are more expensive and more painful to get.

ChinaTrip

2009-10-25T16:53:17Z

Cmaier:

= Noisebridge China Trip =

My contract manufacturer for TV-B-Gone and TripGlasses and Trippy RGB Waves kits (and a few other things) has a plant in Shanghai and a plant in Ji Ning (about half way between Shanghai and Beijing) (both are SEZs -- Special Economic Zones).

Mike Zhao, an American who lives in San Rafael, but born in Shanghai, is the head of the contract manufacturer, called Etonnet. He's also a total geek, and goes to Maker Faire, and has been to Noisebridge. He's going to Shanghai and Ji Ning starting 20-October-2009, and asked me if I'd like to go, and asked if other NB people (and/or others) would like to go check out the manufacturing scene and China. Mike will return on the 27th, but I think it would be cool if the rest of us go to Beijing for a few days and check out a bit of China-ness there, as well as visit with some hacker-types at Beijing university. We will return on 3-November-2009.

'''To give a little taste of what it might be like:'''

A few months ago, Bunny, who manufactures Chumby in China, organized a trip to China to show interested people the manufacturing scene (and China). Evil Mad Scientist went along: [http://www.evilmadscientist.com/article.php/shenzhen/ Evil Mad Scientist Schenzhen trip]

The cost will be very reasonable, as these things go, and the bulk of the cost would be the plane tickets to and from China. At the moment, a round trip ticket costs $694 (SFO to Shanghai, and then Beijing to SFO). When I went last time, nice hotel rooms were about $15 per night in the part of Shanghai I stayed in, and the total cost for me besides the plane ticket was about $350.

'''Note: ''We will need to limit the trip to the first 5 people''''' other than me and Mike to buy their tickets, since we only have one large van to take us around once we get to China.

If you are interested, please add your name, below.

[[user: maltman23 | Mitch]].

= People interested in going to China from 20-October-2009 through 3-November-2009: =

'''You do not need to be a member of Noisebridge to go on this trip.'''

The trip is limited to 5 people other than Mitch, so the first 5 people on this list (after Mitch) who buy their plane tickets will be able to join us:

''[[user: maltman23 | Mitch Altman]]''<br/>
David Yao<br/>
[[user: zaius | David Kelso]]<br/>
bernieS<br/>
''[[user: cmaier | Christoph Maier]]''<br/>
Jimmie Rodgers<br/>
[[user:mrericboyd | Eric Boyd]]<br/>
[[user:Jtfoote | Jonathan Foote]]<br/>

''please add your name here''

= [[ChinaTripPreparations | Travel preparations]] =
= How to purchase an airplane ticket for $694 (if there are any of these remaining) =

''If you want to go on this trip, I would recommend buying your airplane ticket ASAP'', since these cheap seats might not be available after today. Other seats may be available for $900 on other Airlines, such as Northwest Airlines. But it would be nicer if we all flew in together to Shanghai on the same plane.

(as of 9/25, cost for these flights now $793 [[User:Jtfoote|Jtfoote]] 11:58, 25 September 2009 (PDT))

Here is the itinerary for my $693.50 ticket:<br>
'''Leave SFO''': Tuesday, October 20, 2009, 1:15pm<br>
'''Arrive Shanghai (PVG)''': Wednesday October 21, 8:55pm<br>
<br>
'''Leave Beijing (PEK)''': Tuesday, November 3, 2009, 11:55am<br>
'''Arrive SFO''': Tuesday, November 3, 10:00am<br>
<br>
'''''NOTE''': we arrive in '''Shanghai''', but return from '''Beijing'''''

(as of 9/25, cost for these flights now $793 J [[User:Jtfoote|Jtfoote]] 11:58, 25 September 2009 (PDT))

== Here's how Mitch got his plane tickets for $693.50: ==
* go to [http://www.kayak.com/ Kayak.com]
* Click on the "Multi-city" radio-button.
* Fill in the first two lines like this:
** From: SFO To: PVG Leave: 10/20/09 Time: Anytime
** From: PEK To: SFO Leave: 11/03/09 Time: Anytime
* Click the "Search" button.
* If cheap seats are still available, the first item on the resulting screen (after a few false screens are possibly displayed first) will be the flight from Asiana Airlines for '''$694'''.
* Click on "'''select'''", which is underneath "$694". You can use Orbitz or CheapTickets or Expedia to purchase the tickets (Kayak does not charge anything). I used CheapTickets. Click the "'''Go'''" button.
* You are redirected to the site of your choice, where you can purchase the ticket.

=== Orbitz spake thusly to [[user:cmaier | Christoph]]: ===

(as of 9/25, cost for these flights now $793 [[User:Jtfoote|Jtfoote]] 11:56, 25 September 2009 (PDT))

;Total flight cost: $731.64 USD ''(oops, didn't pay attention and didn't unclick some sort of insurance)''
;Flight 1: Tuesday, October 20, 2009
:Asiana Airlines 213 Economy | Boeing 777 (777) | 12hr 10min | 5639 miles
:;Depart: 1:15pm San Francisco, CA San Francisco International (SFO)
:;Arrive: 5:25pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 2hr 35min
:Asiana Airlines 367 Economy | Airbus Industrie A321 (321) | 1hr 55min | 522 miles
:;Depart: 8:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 8:55pm Shanghai, China Shanghai PuDong (PVG)
:Your flight is confirmed. The airline is assigning seats at check-in
:This is an overnight flight.
:Total duration: 16hr 40min | Total miles: 6161 miles
;Flight 2: Tuesday, November 3, 2009
:Asiana Airlines 334 Economy | Boeing 777 (777) | 2hr 5min | 567 miles
:;Depart: 11:55am Beijing, China Beijing Capital (PEK)
:;Arrive: 3:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 1hr 45min
:Asiana Airlines 214 Economy | Boeing 777 (777) | 10hr 15min | 5639 miles
:;Depart: 4:45pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 10:00am San Francisco, CA San Francisco International (SFO)
:Your flight is confirmed. The airline is assigning seats at check-in
:This flight departs from a different airport.
:Total duration: 14hr 5min | Total miles: 6206 miles

= How to get a visa for going to China =

== To go to China, you need to have a visa! ==

=== To get a visa, you need to have a passport. ===

Your passport needs to have at least 6 months before expiration.

=== Getting a visa from the [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ San Francisco Consulate] ===

For this trip, a [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/zgqz/t48485.htm one time entry tourist visa] will do. (Make sure you say that you are going as a tourist, otherwise it is a pain!)

The [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ Consulate General of the People's Republic of China in San Francisco] is at [http://www.fmprc.gov.cn/ce/cgsf/eng/about/t50487.htm Geary Expressway and Laguna].

If you have Simplified Chinese for Adobe Acrobat installed, you can download a [http://sanfrancisco.china-consulate.org/chn/qianzhen/t554559.htm form] from the Chinese consulate general website, and bring it in to their consulate office (If you don't have Simplified Chinese for Adobe Acrobat, the form won't print, but the consulate has paper versions of the form).

They also want a ''real'' photograph for the form. A color printout on regular paper won't do. The consulate information desk person can take 4 passport photos for $10.

Their visa office is [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm a little uphill on Geary towards Geary Court]. When you walk in, you have to pass a metal detector, where you're checked for stuff like Swiss Army knives and digital cameras.

You need to take a number (which isn't totally obvious), and when they call you, you walk up to the displayed teller window and give them your filled out paperwork (what you downloaded from their website or filled in while you were waiting) and your passport (which they keep for a while - the more you pay them, the shorter you have to wait, but it's at least one day), and you may also need to bring a printout for your plane ticket (seems to be optional, [[user:Cmaier | Christoph]] got his visa without the ticket).

If you're a foreigner, they want a copy of your Green Card (or probably the other visa that will get you admitted back into the US and A). There's a photocopier in the office, for a quarter a copy.

You go back some days later, and they give you your passport with the visa pasted in, after you [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t535529.htm pay them] [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t580026.htm with check or credit card, '''no cash''']. You don't even have to pick a number this time.

Their hours are usually [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm weekdays 9-12, 13-15], but they have some [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t527658.htm non-obvious holidays (for 2009)], so check them out on the website.

Again, be sure to apply for a single entry tourist visa. Other visa are more expensive and more painful to get.

ChinaTrip

2009-09-17T21:54:23Z

Cmaier: /* To go to China, you need to have a visa! */

= Noisebridge China Trip =

My contract manufacturer for TV-B-Gone and TripGlasses and Trippy RGB Waves kits (and a few other things) has a plant in Shanghai and a plant in Ji Ning (about half way between Shanghai and Beijing) (both are SEZs -- Special Economic Zones).

Mike Zhao, an American who lives in San Rafael, but born in Shanghai, is the head of the contract manufacturer, called Etonnet. He's also a total geek, and goes to Maker Faire, and has been to Noisebridge. He's going to Shanghai and Ji Ning starting 20-October-2009, and asked me if I'd like to go, and asked if other NB people (and/or others) would like to go check out the manufacturing scene and China. Mike will return on the 27th, but I think it would be cool if the rest of us go to Beijing for a few days and check out a bit of China-ness there, as well as visit with some hacker-types at Beijing university. We will return on 3-November-2009.

'''To give a little taste of what it might be like:'''

A few months ago, Bunny, who manufactures Chumby in China, organized a trip to China to show interested people the manufacturing scene (and China). Evil Mad Scientist went along: [http://www.evilmadscientist.com/article.php/shenzhen/ Evil Mad Scientist Schenzhen trip]

The cost will be very reasonable, as these things go, and the bulk of the cost would be the plane tickets to and from China. At the moment, a round trip ticket costs $694 (SFO to Shanghai, and then Beijing to SFO). When I went last time, nice hotel rooms were about $15 per night in the part of Shanghai I stayed in, and the total cost for me besides the plane ticket was about $350.

'''Note: ''We will need to limit the trip to the first 5 people''''' other than me and Mike to buy their tickets, since we only have one large van to take us around once we get to China.

If you are interested, please add your name, below.

[[user: maltman23 | Mitch]].

= People interested in going to China from 20-October-2009 through 3-November-2009: =

'''You do not need to be a member of Noisebridge to go on this trip.'''

The trip is limited to 5 people other than Mitch, so the first 5 people on this list (after Mitch) who buy their plane tickets will be able to join us:

''[[user: maltman23 | Mitch Altman]]''<br/>
David Yao<br/>
[[user: zaius | David Kelso]]<br/>
bernieS<br/>
''[[user: cmaier | Christoph Maier]]''<br/>
Jimmie Rodgers<br/>
''please add your name here''

= How to purchase an airplane ticket for $694 (if there are any of these remaining) =

''If you want to go on this trip, I would recommend buying your airplane ticket ASAP'', since these cheap seats might not be available after today. Other seats may be available for $900 on other Airlines, such as Northwest Airlines. But it would be nicer if we all flew in together to Shanghai on the same plane.

Here is the itinerary for my $693.50 ticket:<br>
'''Leave SFO''': Tuesday, October 20, 2009, 1:15pm<br>
'''Arrive Shanghai (PVG)''': Wednesday October 21, 8:55pm<br>
<br>
'''Leave Beijing (PEK)''': Tuesday, November 3, 2009, 11:55am<br>
'''Arrive SFO''': Tuesday, November 3, 10:00am<br>
<br>
'''''NOTE''': we arrive in '''Shanghai''', but return from '''Beijing'''''

== Here's how Mitch got his plane tickets for $693.50: ==
* go to [http://www.kayak.com/ Kayak.com]
* Click on the "Multi-city" radio-button.
* Fill in the first two lines like this:
** From: SFO To: PVG Leave: 10/20/09 Time: Anytime
** From: PEK To: SFO Leave: 11/03/09 Time: Anytime
* Click the "Search" button.
* If cheap seats are still available, the first item on the resulting screen (after a few false screens are possibly displayed first) will be the flight from Asiana Airlines for '''$694'''.
* Click on "'''select'''", which is underneath "$694". You can use Orbitz or CheapTickets or Expedia to purchase the tickets (Kayak does not charge anything). I used CheapTickets. Click the "'''Go'''" button.
* You are redirected to the site of your choice, where you can purchase the ticket.

=== Orbitz spake thusly to [[user:cmaier | Christoph]]: ===

;Total flight cost: $731.64 USD ''(oops, didn't pay attention and didn't unclick some sort of insurance)''
;Flight 1: Tuesday, October 20, 2009
:Asiana Airlines 213 Economy | Boeing 777 (777) | 12hr 10min | 5639 miles
:;Depart: 1:15pm San Francisco, CA San Francisco International (SFO)
:;Arrive: 5:25pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 2hr 35min
:Asiana Airlines 367 Economy | Airbus Industrie A321 (321) | 1hr 55min | 522 miles
:;Depart: 8:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 8:55pm Shanghai, China Shanghai PuDong (PVG)
:Your flight is confirmed. The airline is assigning seats at check-in
:This is an overnight flight.
:Total duration: 16hr 40min | Total miles: 6161 miles
;Flight 2: Tuesday, November 3, 2009
:Asiana Airlines 334 Economy | Boeing 777 (777) | 2hr 5min | 567 miles
:;Depart: 11:55am Beijing, China Beijing Capital (PEK)
:;Arrive: 3:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 1hr 45min
:Asiana Airlines 214 Economy | Boeing 777 (777) | 10hr 15min | 5639 miles
:;Depart: 4:45pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 10:00am San Francisco, CA San Francisco International (SFO)
:Your flight is confirmed. The airline is assigning seats at check-in
:This flight departs from a different airport.
:Total duration: 14hr 5min | Total miles: 6206 miles

= How to get a visa for going to China =

== To go to China, you need to have a visa! ==

=== To get a visa, you need to have a passport. ===

Your passport needs to have at least 6 months before expiration.

=== Getting a visa from the [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ San Francisco Consulate] ===

For this trip, a [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/zgqz/t48485.htm one time entry tourist visa] will do. (Make sure you say that you are going as a tourist, otherwise it is a pain!)

The [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ Consulate General of the People's Republic of China in San Francisco] is at [http://www.fmprc.gov.cn/ce/cgsf/eng/about/t50487.htm Geary Expressway and Laguna].

If you have Simplified Chinese for Adobe Acrobat installed, you can download a [http://sanfrancisco.china-consulate.org/chn/qianzhen/t554559.htm form] from the Chinese consulate general website, and bring it in to their consulate office (If you don't have Simplified Chinese for Adobe Acrobat, the form won't print, but the consulate has paper versions of the form).

They also want a ''real'' photograph for the form. A color printout on regular paper won't do. The consulate information desk person can take 4 passport photos for $10.

Their visa office is [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm a little uphill on Geary towards Geary Court]. When you walk in, you have to pass a metal detector, where you're checked for stuff like Swiss Army knives and digital cameras.

You need to take a number (which isn't totally obvious), and when they call you, you walk up to the displayed teller window and give them your filled out paperwork (what you downloaded from their website or filled in while you were waiting) and your passport (which they keep for a while - the more you pay them, the shorter you have to wait, but it's at least one day), and you may also need to bring a printout for your plane ticket (seems to be optional, [[user:Cmaier | Christoph]] got his visa without the ticket).

If you're a foreigner, they want a copy of your Green Card (or probably the other visa that will get you admitted back into the US and A). There's a photocopier in the office, for a quarter a copy.

You go back some days later, and they give you your passport with the visa pasted in, after you [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t535529.htm pay them] [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t580026.htm with check or credit card, '''no cash''']. You don't even have to pick a number this time.

Their hours are usually [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm weekdays 9-12, 13-15], but they have some [http://www.fmprc.gov.cn/ce/cgsf/eng/about/ non-obvious holidays], so check them out on the website.

Again, be sure to apply for a single entry tourist visa. Other visa are more expensive and more painful to get.

ChinaTrip

2009-09-17T21:52:03Z

Cmaier: /* How to get a visa for going to China */

= Noisebridge China Trip =

My contract manufacturer for TV-B-Gone and TripGlasses and Trippy RGB Waves kits (and a few other things) has a plant in Shanghai and a plant in Ji Ning (about half way between Shanghai and Beijing) (both are SEZs -- Special Economic Zones).

Mike Zhao, an American who lives in San Rafael, but born in Shanghai, is the head of the contract manufacturer, called Etonnet. He's also a total geek, and goes to Maker Faire, and has been to Noisebridge. He's going to Shanghai and Ji Ning starting 20-October-2009, and asked me if I'd like to go, and asked if other NB people (and/or others) would like to go check out the manufacturing scene and China. Mike will return on the 27th, but I think it would be cool if the rest of us go to Beijing for a few days and check out a bit of China-ness there, as well as visit with some hacker-types at Beijing university. We will return on 3-November-2009.

'''To give a little taste of what it might be like:'''

A few months ago, Bunny, who manufactures Chumby in China, organized a trip to China to show interested people the manufacturing scene (and China). Evil Mad Scientist went along: [http://www.evilmadscientist.com/article.php/shenzhen/ Evil Mad Scientist Schenzhen trip]

The cost will be very reasonable, as these things go, and the bulk of the cost would be the plane tickets to and from China. At the moment, a round trip ticket costs $694 (SFO to Shanghai, and then Beijing to SFO). When I went last time, nice hotel rooms were about $15 per night in the part of Shanghai I stayed in, and the total cost for me besides the plane ticket was about $350.

'''Note: ''We will need to limit the trip to the first 5 people''''' other than me and Mike to buy their tickets, since we only have one large van to take us around once we get to China.

If you are interested, please add your name, below.

[[user: maltman23 | Mitch]].

= People interested in going to China from 20-October-2009 through 3-November-2009: =

'''You do not need to be a member of Noisebridge to go on this trip.'''

The trip is limited to 5 people other than Mitch, so the first 5 people on this list (after Mitch) who buy their plane tickets will be able to join us:

''[[user: maltman23 | Mitch Altman]]''<br/>
David Yao<br/>
[[user: zaius | David Kelso]]<br/>
bernieS<br/>
''[[user: cmaier | Christoph Maier]]''<br/>
Jimmie Rodgers<br/>
''please add your name here''

= How to purchase an airplane ticket for $694 (if there are any of these remaining) =

''If you want to go on this trip, I would recommend buying your airplane ticket ASAP'', since these cheap seats might not be available after today. Other seats may be available for $900 on other Airlines, such as Northwest Airlines. But it would be nicer if we all flew in together to Shanghai on the same plane.

Here is the itinerary for my $693.50 ticket:<br>
'''Leave SFO''': Tuesday, October 20, 2009, 1:15pm<br>
'''Arrive Shanghai (PVG)''': Wednesday October 21, 8:55pm<br>
<br>
'''Leave Beijing (PEK)''': Tuesday, November 3, 2009, 11:55am<br>
'''Arrive SFO''': Tuesday, November 3, 10:00am<br>
<br>
'''''NOTE''': we arrive in '''Shanghai''', but return from '''Beijing'''''

== Here's how Mitch got his plane tickets for $693.50: ==
* go to [http://www.kayak.com/ Kayak.com]
* Click on the "Multi-city" radio-button.
* Fill in the first two lines like this:
** From: SFO To: PVG Leave: 10/20/09 Time: Anytime
** From: PEK To: SFO Leave: 11/03/09 Time: Anytime
* Click the "Search" button.
* If cheap seats are still available, the first item on the resulting screen (after a few false screens are possibly displayed first) will be the flight from Asiana Airlines for '''$694'''.
* Click on "'''select'''", which is underneath "$694". You can use Orbitz or CheapTickets or Expedia to purchase the tickets (Kayak does not charge anything). I used CheapTickets. Click the "'''Go'''" button.
* You are redirected to the site of your choice, where you can purchase the ticket.

=== Orbitz spake thusly to [[user:cmaier | Christoph]]: ===

;Total flight cost: $731.64 USD ''(oops, didn't pay attention and didn't unclick some sort of insurance)''
;Flight 1: Tuesday, October 20, 2009
:Asiana Airlines 213 Economy | Boeing 777 (777) | 12hr 10min | 5639 miles
:;Depart: 1:15pm San Francisco, CA San Francisco International (SFO)
:;Arrive: 5:25pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 2hr 35min
:Asiana Airlines 367 Economy | Airbus Industrie A321 (321) | 1hr 55min | 522 miles
:;Depart: 8:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 8:55pm Shanghai, China Shanghai PuDong (PVG)
:Your flight is confirmed. The airline is assigning seats at check-in
:This is an overnight flight.
:Total duration: 16hr 40min | Total miles: 6161 miles
;Flight 2: Tuesday, November 3, 2009
:Asiana Airlines 334 Economy | Boeing 777 (777) | 2hr 5min | 567 miles
:;Depart: 11:55am Beijing, China Beijing Capital (PEK)
:;Arrive: 3:00pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:Your flight is confirmed. The airline is assigning seats at check-in
:Change planes. Time between flights: 1hr 45min
:Asiana Airlines 214 Economy | Boeing 777 (777) | 10hr 15min | 5639 miles
:;Depart: 4:45pm Seoul, Korea, Rep. of Seoul Incheon International (ICN)
:;Arrive: 10:00am San Francisco, CA San Francisco International (SFO)
:Your flight is confirmed. The airline is assigning seats at check-in
:This flight departs from a different airport.
:Total duration: 14hr 5min | Total miles: 6206 miles

= How to get a visa for going to China =

== To go to China, you need to have a visa! ==

To get a visa, first you need to have a passport. Your passport needs to have at least 6 months before expiration.

For this trip, a [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/zgqz/t48485.htm one time entry tourist visa] will do. (Make sure you say that you are going as a tourist, otherwise it is a pain!)

The [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/ Consulate General of the People's Republic of China in San Francisco] is at [http://www.fmprc.gov.cn/ce/cgsf/eng/about/t50487.htm Geary Expressway and Laguna].

If you have Simplified Chinese for Adobe Acrobat installed, you can download a [http://sanfrancisco.china-consulate.org/chn/qianzhen/t554559.htm form] from the Chinese consulate general website, and bring it in to their consulate office (If you don't have Simplified Chinese for Adobe Acrobat, the form won't print, but the consulate has paper versions of the form).

They also want a ''real'' photograph for the form. A color printout on regular paper won't do. The consulate information desk person can take 4 passport photos for $10.

Their visa office is [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm a little uphill on Geary towards Geary Court]. When you walk in, you have to pass a metal detector, where you're checked for stuff like Swiss Army knives and digital cameras.

You need to take a number (which isn't totally obvious), and when they call you, you walk up to the displayed teller window and give them your filled out paperwork (what you downloaded from their website or filled in while you were waiting) and your passport (which they keep for a while - the more you pay them, the shorter you have to wait, but it's at least one day), and you may also need to bring a printout for your plane ticket (seems to be optional, [[user:Cmaier | Christoph]] got his visa without the ticket).

If you're a foreigner, they want a copy of your Green Card (or probably the other visa that will get you admitted back into the US and A). There's a photocopier in the office, for a quarter a copy.

You go back some days later, and they give you your passport with the visa pasted in, after you [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t535529.htm pay them] [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t580026.htm with check or credit card, '''no cash''']. You don't even have to pick a number this time.

Their hours are usually [http://www.fmprc.gov.cn/ce/cgsf/eng/qianzhen/t42285.htm weekdays 9-12, 13-15], but they have some [http://www.fmprc.gov.cn/ce/cgsf/eng/about/ non-obvious holidays], so check them out on the website.

Again, be sure to apply for a single entry tourist visa. Other visa are more expensive and more painful to get.

Burningman

2009-08-24T00:20:35Z

Cmaier:

Going to burning man? Post your location here so other noisebridgers can find you...

; Martin ''Ranger Dr. Volts'' : Outpost Berlin - 3 O'Clock Keyhole and C street
; Christoph ''the Flying Hamburger'' : [http://www.portofentry.org Airport] or Shack of Sit, Esplanade at 7:59

User:Cmaier

2009-08-24T00:07:40Z

Cmaier:

[[Image:YoungHacker.jpg]]
[[Image:CM_puppy.jpg]]
----
[http://www.youtube.com/watch?v=vLuJw582GhM I definitely don't look as good as Matt Damon]
----
[[Image:FlyingHamburger2008.JPG]]
----
===ssh public key===
<pre>ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsSyKBQ53qd+6GKwKCG3L9ZOl33EJTeTdkb1tfw4DurElJi+5LBaDHulRPy5m98T3OysTfNmYHrF5VeGWBP/En0A0/4PqdrkpbiYxmRdLB0d4qaSq9/hz48bOoRacrzew26e3dT7jxF+MXvzDCSGEYUZR1nf3O9ckLP81aB6AwxNIiWo5fiSDkfOIaYPjBC6uQl0xxH1U6DanI4/6OmO0IkE6ljxhURPgrsusLDrdL4rzih5CeR1wpeHnwgvuhmOT52JikyA5WGu4G7RGSjtXA1EjqoHvAQDTySRypWQ07Z9e9nTcNosDDmgYFv1FT886r1Nm7OHuc5gSyd180FXHmw== cmaier@DrEvil</pre>
===login entry===
<pre>% sudo adduser --gecos 'C.Maier' cmaier</pre>

File:FlyingHamburger2008.JPG

2009-08-24T00:00:48Z

Cmaier: Flying around The Man, Burning Man 2008

Flying around The Man, Burning Man 2008

Noisebridge

2009-08-23T23:55:11Z

Cmaier:

__NOTOC__ __NOEDITSECTION__ [[Image:Noisebridge tools.jpg|thumb|right|A space to learn and create neat things]]
[[Image:Noisebridge_Soldering_Workshop.jpg|thumb|right|Soldering workshop at Noisebridge]]
[[Image:Skittlevodka.jpg|thumb|right|Hacking, it's more than just electronics]]
[[Image:Noisebridge air.jpg|thumb|right|Members at Noisebridge]]
[[Image:noisebridge.jpg|thumb|right|Front door to 83C]]
[[Image:Starfive - q's noisebridge project.jpg|thumb|right|Craft hacking]]
''Noisebridge is an infrastructure provider for technical-creative projects, collaboratively run by its members. We are incorporated as a non-profit educational corporation for public benefit.'' [[Noisebridge_Vision|Read more about Noisebridge...]]

'''[[Mailinglist|Join the Noisebridge mailing list]] or hop on [[IRC]] to hear about upcoming events and to get involved.'''

'''[[Noisebridge Membership|Become a member]]! -- [[New Member FAQ]]!'''

'''[[Donate or Pay Dues| How to Donate money or Pay Membership Dues]].'''

= NEWS: Lease signed on 2169 Mission! =
We've found a new space only two blocks away from our current space! See [[Moving/2169 Mission|2169 Mission]] for details. Would you like to help us build it out? Check the [[Moving/2169_Mission/Buildout | buildout]] page or aid by making a [[Donate or Pay Dues|donation]].

== [http://noisebridge.net/wiki/Category:Events Events] ==
'''[http://www.google.com/calendar/embed?src=vo3i3c0qtjnkjr2ojasd0ftt8s%40group.calendar.google.com&ctz=America/Los_Angeles The unofficial Google calendar for Noisebridge]'''

===Upcoming Planned Events===
* '''Thursday August 20th, 8pm''' - [[Five Minutes of Fame]]
* '''TBD''' [[Fundraising Party]]
* [[Burningman|Burning Man]]

=== Recurring Events ===


* '''Monday'''
** 6:30p [[PyClass]] - Learn how to program using the Python programming language.
** 8p [[Ruby Class]] - Learn how to program stuff like cat, echo, netcat using pretty gemstones.
** 8:30p [[Circuit Hacking Mondays]] - Weekly workshop moved to 2169 for August to invest time in assisting electrical build out.
* '''Tuesday'''
** '''8p [[#Meetings|Noisebridge Weekly Meeting]]''' - Introducing new people and events to the space, general discussion, and decision making.
* '''Wednesday'''
** 7p [[French|French]] - Learn to speak French like a native (all levels welcome).
** 8p [[Machine Learning]] - Teach computers to learn stuff using artificial intelligence and other techniques.
** 8p [[Games]] - Play games with geeks.
** 8p [[ASL Group]] - Starting Sept. 2nd - Learn how to talk without using your voice (or just come chat in ASL). <small>[http://whenisgood.net/noisebridge/asl/generic click to reschedule]</small>
* '''Thursday'''
** 8p [[Kite Hacking]] - Learn to put stuff in the sky. (Temporary timeslot, while VFX is on hiatus. Skips the third Thursday of every month)
** '''8p [[Five Minutes of Fame]]''' - Monthly set of lightning talks on diverse topics (third Thursday of each month)
* '''Friday'''
** 7p [[Science, Engineering & Design Huddle]] - Weekly group to discuss design approach, share techniques, and solve any problem you may be having with your project(s).
** 8p [[Moving/2169 Mission/Buildout|2169 Buildout planning]] - Discussion & execution of how to renovate our new space
* '''Sunday'''
** 11a [[Cyborg Group]] - Work on projects like artificial senses (e.g. an anklet that lets you feel which way is north)
** 2p [[Formal methods reading group]] - Learn about computer science theory
** 3p [[Locks!]] (every other sunday)

==== TBD (pending feedback) ====

==== On hiatus ====
* [[German]] - A weekly group to learn German for all levels
* [[Mandarin Corner]] - Weekly study group to practice Chinese language -- this class is on temporary hiatus until organizers such as yourself regroup and start it up!
* [[Professional VFX Compositing With Adobe After Effects]] - Learn how to create photo realistic visual effects composites using After Effects.
** hiatus until early- to mid-September
* [[mat_fab|Material Fabrication Sessions]] - Weekly gatherings to share design techniques & hands-on fabrication skills useful for making material objects, a shop class covering the safe and effective use of the tools in our little shop.
** temporarily replaced by rebuilding of 2169 & planning meetings thereof

== Info ==
[[Getting Here]]: We're at 83C Wiese Street between Mission and Valencia just off 16th Street in San Francisco's Mission district. [http://openstreetmap.org/?mlat=37.765600&mlon=-122.420420&zoom=16 openstreetmap] [http://maps.google.com/?q=83C+Wiese+St,+94103 Google Maps]

[[Planet Noisebridge]]: [https://www.noisebridge.net/planet/ Our blog aggregation service].

[[The Space]]: Home sweet home (including our network drops [[Network]]).

[[Noisebridge_Vision|Vision]]: Our vision - what our space is all about!

[[Safety|Safety in the Space]]: What to do in case of an emergency.

[[Infrastructure]]: Stuff we provide -- servers, bulk parts orders from Digikey/McMaster/Mouser, project spaces, specialized tools.

[[Library]]: Information pertaining to projects we're working on.

[[Concepts]]: A place to share your project ideas and to find like-minds.

[[Donate or Pay Dues]]: Here is where you can see how easy it is to Donate to Noisebridge or to pay your monthly Membership Dues.

[[Identity]]: Logos, stickers, t-shirts and stuff.

[[Press Coverage]]: mentions of Noisebridge in the media (both blog and dead tree).

[[Hackerspace Infos]]: Howtos, Background, and friendly Hackerspaces elsewhere.

[[Board and Officers]]: Information about our formal organization.

== Meetings ==
'''Meetings every Tuesday at 8 PM US/Pacific at [[Getting Here|83 C Wiese St.]]''' This meeting is for members and non-members alike, everyone is welcome. Agenda items tend to typically include introductions, updates on projects happening in the space and upcoming events. Meetings normally end with general socializing and in depth discussion of any topics brought up earlier.
* Prev: [[Meeting Notes 2009 08 11 | 2009-08-11]]
* Next: [[Meeting Notes 2009 08 18 | 2009-08-18]]
* ... (more in the [[:Category:Meeting Notes|Meeting Notes Archive]])

== Get in Touch ==
* [[IRC|IRC channel]] - irc://chat.freenode.net/#noisebridge
* [[Mailinglist]] - Best way to keep informed of upcoming events
* [[People]]
* [https://www.facebook.com/group.php?gid=100998755576 Facebook group]
* [[Twitter]]
* [[MemoryHole|Legal Requests (information removal, etc)]]
Or just [[Getting Here|drop by the space]]. We're here almost all the time, although evenings are best.

== Status ==
'''Noisebridge is up!''' We began building Noisebridge in Feb 2007. Since December 2007 we've had regular Tuesday meetings, and as of October 1st 2008, we have a physical space. We are a tax-exempt 501(c)(3) organization as of July 2009, retroactive October 2008.

== Emergency ==
<SPAN style="color: #ff0000; font-size: 18px;">[[Safety|In Case of Emergency]]</SPAN>

User:Cmaier

2009-08-21T22:32:00Z

Cmaier:

[[Image:YoungHacker.jpg]]
[[Image:CM_puppy.jpg]]
----
[http://www.youtube.com/watch?v=vLuJw582GhM I definitely don't look as good as Matt Damon]
----
===ssh public key===
<pre>ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsSyKBQ53qd+6GKwKCG3L9ZOl33EJTeTdkb1tfw4DurElJi+5LBaDHulRPy5m98T3OysTfNmYHrF5VeGWBP/En0A0/4PqdrkpbiYxmRdLB0d4qaSq9/hz48bOoRacrzew26e3dT7jxF+MXvzDCSGEYUZR1nf3O9ckLP81aB6AwxNIiWo5fiSDkfOIaYPjBC6uQl0xxH1U6DanI4/6OmO0IkE6ljxhURPgrsusLDrdL4rzih5CeR1wpeHnwgvuhmOT52JikyA5WGu4G7RGSjtXA1EjqoHvAQDTySRypWQ07Z9e9nTcNosDDmgYFv1FT886r1Nm7OHuc5gSyd180FXHmw== cmaier@DrEvil</pre>
===login entry===
<pre>% sudo adduser --gecos 'C.Maier' cmaier</pre>

TechnicolorDreamcoat

2009-08-21T19:24:39Z

Cmaier: /* Technicolor Dreamcoat */

= Technicolor Dreamcoat =

==Change Log==
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)<br/>
added references [[User:Cmaier|Cmaier]] 10:37, 20 August 2009 (PDT)<br/>
added reference, minor formatting [[User:Cmaier|Cmaier]] 10:45, 20 August 2009 (PDT)<br/>
minor edits [[User:Cmaier|Cmaier]] 10:46, 20 August 2009 (PDT), [[User:Cmaier|Cmaier]] 11:14, 20 August 2009 (PDT), [[User:Cmaier|Cmaier]] 12:16, 20 August 2009 (PDT)<br/>
added Dreamcoat thumbnail pictures for reference [[User:Cmaier|Cmaier]] 12:24, 21 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions without you getting paid):

==Vision==
[[Image:DreamcoatThumbnail.jpg|left|title|Technicolor Dreamcoat thumbnail]]
[[Image:Miranda_Jones_thumbnail.jpg|right|title|Miranda Jones thumbnail]]
It would be '''''ultra'' cool''' to wear a [http://www.biblegateway.com/passage/?search=Genesis%2037&version=9 Technicolor Dreamcoat] costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dreamcoat, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but [http://memory-alpha.org/en/wiki/Miranda_Jones by no means ending there]), and with the microcontrollers communicating with each other (and maybe wirelessly with other costumes or a [http://www.science.uva.nl/~robbert/zappa/albums/Joe_s_Garage/01.html Central Scrutinizer]). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

==First Steps==
For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life]... that would fit nicely into this year's Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of ''Technicolor Dreamcoat - cum - biosensor array - cum - distributed processing - cum - wireless'' Burning Man costume:
The patient gown leaves the butt exposed.

File:Miranda Jones thumbnail.jpg

2009-08-21T19:13:30Z

Cmaier: Miranda Jones, from http://memory-alpha.org/en/wiki/Miranda_Jones

Miranda Jones, from http://memory-alpha.org/en/wiki/Miranda_Jones

File:DreamcoatThumbnail.jpg

2009-08-21T18:23:18Z

Cmaier: Thumbnail of Joseph's Amazing Technicolor Dreamcoat

Thumbnail of Joseph's Amazing Technicolor Dreamcoat

Pulse Necklace

2009-08-20T19:16:00Z

Cmaier: /* Technicolor Dreamcoat */

A choker (tight necklace) which measures your heartbeat (pulse) and shows it to others via a set of LEDs. It may also optionally communicate the same info to the wearer via a vibrator. Although theoretically heart rate should be known via senses intrinsic to humans, in practice it is actually quite difficult to know, and I think there are many interesting social interactions that pulse-display could trigger.

Currently Eric Boyd and Chung-Hay are working on this device.

==Design Thoughts==

Sensor:

Generally all commercial ones a just little electrocardiogram units.

From http://en.wikipedia.org/wiki/Electrocardiography :

<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
</blockquote>

However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.

Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

==Prior Art==

I already have a set of chokers with surface mount LEDs inside (I've shown this at prior meetings during show and tell). I am unsure of how the LEDs are wired - it's possible that they are all controlled from the same wire, in which case the device will not be able to display as above, and instead will simply flash. I got the chokers from [http://store.rebeccas.com/store/merchant.mvc?Screen=PROD&Product_Code=LI1069&Category_Code= Rebeccas] for only $2.15 each, so if they are suitable they make great kit components.

Reverse engineering the choker's flexible PCB:

<pre>
Lights: 1-12, counted from the batteries
(Only lights 1, 3, 5, 6, 7, 8, 10, 12 are populated)
Pins: 1-6, counted from the big ground of the batteries nearest the ribbon cable

Schematic Reverse Engineer:
Pin 1: V+ for all lights
Pin 2: V- for 1, 3, 5
Pin 3: V- for 2, 4
Pin 4: V- for 6, 8
Pin 5: V- for 7, 9, 11
Pin 6: V- for 10, 12

Apparently the LEDs are very easy to fry, since both green and pink choker now have many non-functional LEDs
</pre>

I've done some google searches, but I haven't been able to find anything like this. There are some pulse-sensing watches, for instance [http://www.chinavasion.com/product_info.php/pName/exercise-watch-pulse-calorie-reader/ Chinavasion: Exercise Watch - pulse + calorie reader] or see some reviews at [http://www.consumersearch.com/heart-rate-monitors Heart Rate Monitors]. These devices almost universally have a small display, but I think a haptic solution could be greatly superior.

[[Image:PulseWatch.jpg]]

You can see in the image a small heart on the left side of the display. When it's sensing your pulse, this heart blinks with your pulse, which is super cool. The sensor is under my index finger on the right hand side. You need to just touch the sensor - if you press hard, that destroys the signals (presumably because the pressure makes it so your skin doesn't respond to the pressure of your blood and instead just responds to the pressure of your hold...)

==== Technicolor Dreamcoat ====
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)<br/>
added references [[User:Cmaier|Cmaier]] 10:37, 20 August 2009 (PDT)<br/>
added reference, minor formatting [[User:Cmaier|Cmaier]] 10:45, 20 August 2009 (PDT)<br/>
minor edits [[User:Cmaier|Cmaier]] 10:46, 20 August 2009 (PDT), [[User:Cmaier|Cmaier]] 11:14, 20 August 2009 (PDT), [[User:Cmaier|Cmaier]] 12:16, 20 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions without you getting paid):

It would be '''''ultra'' cool''' to wear a [http://www.biblegateway.com/passage/?search=Genesis%2037&version=9 Technicolor Dreamcoat] costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dreamcoat, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but [http://memory-alpha.org/en/wiki/Miranda_Jones by no means ending there]), and with the microcontrollers communicating with each other (and maybe wirelessly with other costumes or a [http://www.science.uva.nl/~robbert/zappa/albums/Joe_s_Garage/01.html Central Scrutinizer]). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life]... that would fit nicely into this year's Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of ''Technicolor Dreamcoat - cum - biosensor array - cum - distributed processing - cum - wireless'' Burning Man costume:
The patient gown leaves the butt exposed.

==Hack Notes==

[[Pulse_Necklace_24June2009|June 24th, 2009]]

[[Pulse_Necklace_01July2009|July 1st, 2009]]

[[Pulse_Necklace_08July2009|July 8st, 2009]]

[[Pulse_Necklace_15July2009|July 15th, 2009]]

[[Pulse_Necklace_21July2009|Circuit Research, July 21st, 2009]]

[[Pulse_Necklace_22July2009|July 22th, 2009]]

[[Pulse_Necklace_27July2009|Custom Stencil Design Research, July 28th, 2009]]

[[Pulse_Necklace_29July2009|July 29th, 2009]]

[[Pulse_Necklace_02Aug2009|August 2nd, 2009]]

[[Pulse_Necklace_05Aug2009|August 5th, 2009]]

[[Pulse_Necklace_12Aug2009|August 12th, 2009]]

[[Pulse_Necklace_16Aug2009|August 16th, 2009]]

==Lessons Learned Along the Way==

[[Conductive_Paint_Lessons|Lessons on Conductive Paint]]

[[Paint_Thinning_Lessons|Lessons on Paint Thinning ]]

[[Category:Sensebridge]]

Pulse Necklace

2009-08-20T18:14:45Z

Cmaier: /* Technicolor Dreamcoat */

A choker (tight necklace) which measures your heartbeat (pulse) and shows it to others via a set of LEDs. It may also optionally communicate the same info to the wearer via a vibrator. Although theoretically heart rate should be known via senses intrinsic to humans, in practice it is actually quite difficult to know, and I think there are many interesting social interactions that pulse-display could trigger.

Currently Eric Boyd and Chung-Hay are working on this device.

==Design Thoughts==

Sensor:

Generally all commercial ones a just little electrocardiogram units.

From http://en.wikipedia.org/wiki/Electrocardiography :

<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
</blockquote>

However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.

Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

==Prior Art==

I already have a set of chokers with surface mount LEDs inside (I've shown this at prior meetings during show and tell). I am unsure of how the LEDs are wired - it's possible that they are all controlled from the same wire, in which case the device will not be able to display as above, and instead will simply flash. I got the chokers from [http://store.rebeccas.com/store/merchant.mvc?Screen=PROD&Product_Code=LI1069&Category_Code= Rebeccas] for only $2.15 each, so if they are suitable they make great kit components.

Reverse engineering the choker's flexible PCB:

<pre>
Lights: 1-12, counted from the batteries
(Only lights 1, 3, 5, 6, 7, 8, 10, 12 are populated)
Pins: 1-6, counted from the big ground of the batteries nearest the ribbon cable

Schematic Reverse Engineer:
Pin 1: V+ for all lights
Pin 2: V- for 1, 3, 5
Pin 3: V- for 2, 4
Pin 4: V- for 6, 8
Pin 5: V- for 7, 9, 11
Pin 6: V- for 10, 12

Apparently the LEDs are very easy to fry, since both green and pink choker now have many non-functional LEDs
</pre>

I've done some google searches, but I haven't been able to find anything like this. There are some pulse-sensing watches, for instance [http://www.chinavasion.com/product_info.php/pName/exercise-watch-pulse-calorie-reader/ Chinavasion: Exercise Watch - pulse + calorie reader] or see some reviews at [http://www.consumersearch.com/heart-rate-monitors Heart Rate Monitors]. These devices almost universally have a small display, but I think a haptic solution could be greatly superior.

[[Image:PulseWatch.jpg]]

You can see in the image a small heart on the left side of the display. When it's sensing your pulse, this heart blinks with your pulse, which is super cool. The sensor is under my index finger on the right hand side. You need to just touch the sensor - if you press hard, that destroys the signals (presumably because the pressure makes it so your skin doesn't respond to the pressure of your blood and instead just responds to the pressure of your hold...)

==== Technicolor Dreamcoat ====
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)<br/>
added references [[User:Cmaier|Cmaier]] 10:37, 20 August 2009 (PDT)<br/>
added reference, minor formatting [[User:Cmaier|Cmaier]] 10:45, 20 August 2009 (PDT)<br/>
minor edits [[User:Cmaier|Cmaier]] 10:46, 20 August 2009 (PDT) and [[User:Cmaier|Cmaier]] 11:14, 20 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions without you getting paid):

It would be '''''ultra'' cool''' to wear a [http://www.biblegateway.com/passage/?search=Genesis%2037&version=9 Technicolor Dreamcoat] costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dreamcoat, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but [http://memory-alpha.org/en/wiki/Miranda_Jones by no means ending there]), and with the microcontrollers communicating with each other (and maybe wirelessly with other costumes or a [http://www.science.uva.nl/~robbert/zappa/albums/Joe_s_Garage/01.html Central Scrutinizer]). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life], would fit nicely into this years' Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of ''Technicolor Dreamcoat - cum - biosensor array - cum - distributed processing - cum - wireless'' Burning Man costume:
The patient gown leaves the butt exposed.

==Hack Notes==

[[Pulse_Necklace_24June2009|June 24th, 2009]]

[[Pulse_Necklace_01July2009|July 1st, 2009]]

[[Pulse_Necklace_08July2009|July 8st, 2009]]

[[Pulse_Necklace_15July2009|July 15th, 2009]]

[[Pulse_Necklace_21July2009|Circuit Research, July 21st, 2009]]

[[Pulse_Necklace_22July2009|July 22th, 2009]]

[[Pulse_Necklace_27July2009|Custom Stencil Design Research, July 28th, 2009]]

[[Pulse_Necklace_29July2009|July 29th, 2009]]

[[Pulse_Necklace_02Aug2009|August 2nd, 2009]]

[[Pulse_Necklace_05Aug2009|August 5th, 2009]]

[[Pulse_Necklace_12Aug2009|August 12th, 2009]]

[[Pulse_Necklace_16Aug2009|August 16th, 2009]]

==Lessons Learned Along the Way==

[[Conductive_Paint_Lessons|Lessons on Conductive Paint]]

[[Paint_Thinning_Lessons|Lessons on Paint Thinning ]]

[[Category:Sensebridge]]

Pulse Necklace

2009-08-20T17:46:48Z

Cmaier: /* Technicolor Dreamcoat */

A choker (tight necklace) which measures your heartbeat (pulse) and shows it to others via a set of LEDs. It may also optionally communicate the same info to the wearer via a vibrator. Although theoretically heart rate should be known via senses intrinsic to humans, in practice it is actually quite difficult to know, and I think there are many interesting social interactions that pulse-display could trigger.

Currently Eric Boyd and Chung-Hay are working on this device.

==Design Thoughts==

Sensor:

Generally all commercial ones a just little electrocardiogram units.

From http://en.wikipedia.org/wiki/Electrocardiography :

<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
</blockquote>

However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.

Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

==Prior Art==

I already have a set of chokers with surface mount LEDs inside (I've shown this at prior meetings during show and tell). I am unsure of how the LEDs are wired - it's possible that they are all controlled from the same wire, in which case the device will not be able to display as above, and instead will simply flash. I got the chokers from [http://store.rebeccas.com/store/merchant.mvc?Screen=PROD&Product_Code=LI1069&Category_Code= Rebeccas] for only $2.15 each, so if they are suitable they make great kit components.

Reverse engineering the choker's flexible PCB:

<pre>
Lights: 1-12, counted from the batteries
(Only lights 1, 3, 5, 6, 7, 8, 10, 12 are populated)
Pins: 1-6, counted from the big ground of the batteries nearest the ribbon cable

Schematic Reverse Engineer:
Pin 1: V+ for all lights
Pin 2: V- for 1, 3, 5
Pin 3: V- for 2, 4
Pin 4: V- for 6, 8
Pin 5: V- for 7, 9, 11
Pin 6: V- for 10, 12

Apparently the LEDs are very easy to fry, since both green and pink choker now have many non-functional LEDs
</pre>

I've done some google searches, but I haven't been able to find anything like this. There are some pulse-sensing watches, for instance [http://www.chinavasion.com/product_info.php/pName/exercise-watch-pulse-calorie-reader/ Chinavasion: Exercise Watch - pulse + calorie reader] or see some reviews at [http://www.consumersearch.com/heart-rate-monitors Heart Rate Monitors]. These devices almost universally have a small display, but I think a haptic solution could be greatly superior.

[[Image:PulseWatch.jpg]]

You can see in the image a small heart on the left side of the display. When it's sensing your pulse, this heart blinks with your pulse, which is super cool. The sensor is under my index finger on the right hand side. You need to just touch the sensor - if you press hard, that destroys the signals (presumably because the pressure makes it so your skin doesn't respond to the pressure of your blood and instead just responds to the pressure of your hold...)

==== Technicolor Dreamcoat ====
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)<br/>
added references [[User:Cmaier|Cmaier]] 10:37, 20 August 2009 (PDT)<br/>
added reference, minor formatting [[User:Cmaier|Cmaier]] 10:45, 20 August 2009 (PDT)<br/>
minor edit [[User:Cmaier|Cmaier]] 10:46, 20 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions without you getting paid):

It would be '''''ultra'' cool''' to wear a [http://www.biblegateway.com/passage/?search=Genesis%2037&version=9 Technicolor Dreamcoat] costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dreamcoat, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but [http://memory-alpha.org/en/wiki/Miranda_Jones by no means ending there], and with the sensors communicating with each other (and maybe wirelessly with other costumes or a [http://www.science.uva.nl/~robbert/zappa/albums/Joe_s_Garage/01.html Central Scrutinizer]). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life], would fit nicely into this years' Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of ''Technicolor Dreamcoat - cum - biosensor array - cum - distributed processing - cum - wireless'' Burning Man costume:
The patient gown leaves the butt exposed.

==Hack Notes==

[[Pulse_Necklace_24June2009|June 24th, 2009]]

[[Pulse_Necklace_01July2009|July 1st, 2009]]

[[Pulse_Necklace_08July2009|July 8st, 2009]]

[[Pulse_Necklace_15July2009|July 15th, 2009]]

[[Pulse_Necklace_21July2009|Circuit Research, July 21st, 2009]]

[[Pulse_Necklace_22July2009|July 22th, 2009]]

[[Pulse_Necklace_27July2009|Custom Stencil Design Research, July 28th, 2009]]

[[Pulse_Necklace_29July2009|July 29th, 2009]]

[[Pulse_Necklace_02Aug2009|August 2nd, 2009]]

[[Pulse_Necklace_05Aug2009|August 5th, 2009]]

[[Pulse_Necklace_12Aug2009|August 12th, 2009]]

[[Pulse_Necklace_16Aug2009|August 16th, 2009]]

==Lessons Learned Along the Way==

[[Conductive_Paint_Lessons|Lessons on Conductive Paint]]

[[Paint_Thinning_Lessons|Lessons on Paint Thinning ]]

[[Category:Sensebridge]]

Pulse Necklace

2009-08-20T17:45:44Z

Cmaier: /* Technicolor Dreamcoat */

A choker (tight necklace) which measures your heartbeat (pulse) and shows it to others via a set of LEDs. It may also optionally communicate the same info to the wearer via a vibrator. Although theoretically heart rate should be known via senses intrinsic to humans, in practice it is actually quite difficult to know, and I think there are many interesting social interactions that pulse-display could trigger.

Currently Eric Boyd and Chung-Hay are working on this device.

==Design Thoughts==

Sensor:

Generally all commercial ones a just little electrocardiogram units.

From http://en.wikipedia.org/wiki/Electrocardiography :

<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
</blockquote>

However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.

Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

==Prior Art==

I already have a set of chokers with surface mount LEDs inside (I've shown this at prior meetings during show and tell). I am unsure of how the LEDs are wired - it's possible that they are all controlled from the same wire, in which case the device will not be able to display as above, and instead will simply flash. I got the chokers from [http://store.rebeccas.com/store/merchant.mvc?Screen=PROD&Product_Code=LI1069&Category_Code= Rebeccas] for only $2.15 each, so if they are suitable they make great kit components.

Reverse engineering the choker's flexible PCB:

<pre>
Lights: 1-12, counted from the batteries
(Only lights 1, 3, 5, 6, 7, 8, 10, 12 are populated)
Pins: 1-6, counted from the big ground of the batteries nearest the ribbon cable

Schematic Reverse Engineer:
Pin 1: V+ for all lights
Pin 2: V- for 1, 3, 5
Pin 3: V- for 2, 4
Pin 4: V- for 6, 8
Pin 5: V- for 7, 9, 11
Pin 6: V- for 10, 12

Apparently the LEDs are very easy to fry, since both green and pink choker now have many non-functional LEDs
</pre>

I've done some google searches, but I haven't been able to find anything like this. There are some pulse-sensing watches, for instance [http://www.chinavasion.com/product_info.php/pName/exercise-watch-pulse-calorie-reader/ Chinavasion: Exercise Watch - pulse + calorie reader] or see some reviews at [http://www.consumersearch.com/heart-rate-monitors Heart Rate Monitors]. These devices almost universally have a small display, but I think a haptic solution could be greatly superior.

[[Image:PulseWatch.jpg]]

You can see in the image a small heart on the left side of the display. When it's sensing your pulse, this heart blinks with your pulse, which is super cool. The sensor is under my index finger on the right hand side. You need to just touch the sensor - if you press hard, that destroys the signals (presumably because the pressure makes it so your skin doesn't respond to the pressure of your blood and instead just responds to the pressure of your hold...)

==== Technicolor Dreamcoat ====
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)<br/>
added references [[User:Cmaier|Cmaier]] 10:37, 20 August 2009 (PDT)<br/>
added reference, minor formatting [[User:Cmaier|Cmaier]] 10:45, 20 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions):

It would be '''''ultra'' cool''' to wear a [http://www.biblegateway.com/passage/?search=Genesis%2037&version=9 Technicolor Dreamcoat] costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dreamcoat, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but [http://memory-alpha.org/en/wiki/Miranda_Jones by no means ending there], and with the sensors communicating with each other (and maybe wirelessly with other costumes or a [http://www.science.uva.nl/~robbert/zappa/albums/Joe_s_Garage/01.html Central Scrutinizer]). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life], would fit nicely into this years' Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of ''Technicolor Dreamcoat - cum - biosensor array - cum - distributed processing - cum - wireless'' Burning Man costume:
The patient gown leaves the butt exposed.

==Hack Notes==

[[Pulse_Necklace_24June2009|June 24th, 2009]]

[[Pulse_Necklace_01July2009|July 1st, 2009]]

[[Pulse_Necklace_08July2009|July 8st, 2009]]

[[Pulse_Necklace_15July2009|July 15th, 2009]]

[[Pulse_Necklace_21July2009|Circuit Research, July 21st, 2009]]

[[Pulse_Necklace_22July2009|July 22th, 2009]]

[[Pulse_Necklace_27July2009|Custom Stencil Design Research, July 28th, 2009]]

[[Pulse_Necklace_29July2009|July 29th, 2009]]

[[Pulse_Necklace_02Aug2009|August 2nd, 2009]]

[[Pulse_Necklace_05Aug2009|August 5th, 2009]]

[[Pulse_Necklace_12Aug2009|August 12th, 2009]]

[[Pulse_Necklace_16Aug2009|August 16th, 2009]]

==Lessons Learned Along the Way==

[[Conductive_Paint_Lessons|Lessons on Conductive Paint]]

[[Paint_Thinning_Lessons|Lessons on Paint Thinning ]]

[[Category:Sensebridge]]

Pulse Necklace

2009-08-20T17:37:54Z

Cmaier: /* Technicolor Dream Suit */

A choker (tight necklace) which measures your heartbeat (pulse) and shows it to others via a set of LEDs. It may also optionally communicate the same info to the wearer via a vibrator. Although theoretically heart rate should be known via senses intrinsic to humans, in practice it is actually quite difficult to know, and I think there are many interesting social interactions that pulse-display could trigger.

Currently Eric Boyd and Chung-Hay are working on this device.

==Design Thoughts==

Sensor:

Generally all commercial ones a just little electrocardiogram units.

From http://en.wikipedia.org/wiki/Electrocardiography :

<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
</blockquote>

However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.

Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

==Prior Art==

I already have a set of chokers with surface mount LEDs inside (I've shown this at prior meetings during show and tell). I am unsure of how the LEDs are wired - it's possible that they are all controlled from the same wire, in which case the device will not be able to display as above, and instead will simply flash. I got the chokers from [http://store.rebeccas.com/store/merchant.mvc?Screen=PROD&Product_Code=LI1069&Category_Code= Rebeccas] for only $2.15 each, so if they are suitable they make great kit components.

Reverse engineering the choker's flexible PCB:

<pre>
Lights: 1-12, counted from the batteries
(Only lights 1, 3, 5, 6, 7, 8, 10, 12 are populated)
Pins: 1-6, counted from the big ground of the batteries nearest the ribbon cable

Schematic Reverse Engineer:
Pin 1: V+ for all lights
Pin 2: V- for 1, 3, 5
Pin 3: V- for 2, 4
Pin 4: V- for 6, 8
Pin 5: V- for 7, 9, 11
Pin 6: V- for 10, 12

Apparently the LEDs are very easy to fry, since both green and pink choker now have many non-functional LEDs
</pre>

I've done some google searches, but I haven't been able to find anything like this. There are some pulse-sensing watches, for instance [http://www.chinavasion.com/product_info.php/pName/exercise-watch-pulse-calorie-reader/ Chinavasion: Exercise Watch - pulse + calorie reader] or see some reviews at [http://www.consumersearch.com/heart-rate-monitors Heart Rate Monitors]. These devices almost universally have a small display, but I think a haptic solution could be greatly superior.

[[Image:PulseWatch.jpg]]

You can see in the image a small heart on the left side of the display. When it's sensing your pulse, this heart blinks with your pulse, which is super cool. The sensor is under my index finger on the right hand side. You need to just touch the sensor - if you press hard, that destroys the signals (presumably because the pressure makes it so your skin doesn't respond to the pressure of your blood and instead just responds to the pressure of your hold...)

==== Technicolor Dreamcoat ====
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)

added references [[User:Cmaier|Cmaier]] 10:37, 20 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions):

It would be '''''ultra'' cool''' to wear a [http://www.biblegateway.com/passage/?search=Genesis%2037&version=9 Technicolor Dreamcoat] costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dreamcoat, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but [http://memory-alpha.org/en/wiki/Miranda_Jones by no means ending there], and with the sensors communicating with each other (and maybe wirelessly with other costumes of a Central Scrutinizer). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life] ... would fit nicely into this years' Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of Technicolor Dream Suit - cum - biosensor array - cum - distributed processing - cum - wireless Burning Man costume:
The patient gown leaves the butt exposed.

==Hack Notes==

[[Pulse_Necklace_24June2009|June 24th, 2009]]

[[Pulse_Necklace_01July2009|July 1st, 2009]]

[[Pulse_Necklace_08July2009|July 8st, 2009]]

[[Pulse_Necklace_15July2009|July 15th, 2009]]

[[Pulse_Necklace_21July2009|Circuit Research, July 21st, 2009]]

[[Pulse_Necklace_22July2009|July 22th, 2009]]

[[Pulse_Necklace_27July2009|Custom Stencil Design Research, July 28th, 2009]]

[[Pulse_Necklace_29July2009|July 29th, 2009]]

[[Pulse_Necklace_02Aug2009|August 2nd, 2009]]

[[Pulse_Necklace_05Aug2009|August 5th, 2009]]

[[Pulse_Necklace_12Aug2009|August 12th, 2009]]

[[Pulse_Necklace_16Aug2009|August 16th, 2009]]

==Lessons Learned Along the Way==

[[Conductive_Paint_Lessons|Lessons on Conductive Paint]]

[[Paint_Thinning_Lessons|Lessons on Paint Thinning ]]

[[Category:Sensebridge]]

Pulse Necklace

2009-08-20T16:56:54Z

Cmaier: /* Prior Art */

A choker (tight necklace) which measures your heartbeat (pulse) and shows it to others via a set of LEDs. It may also optionally communicate the same info to the wearer via a vibrator. Although theoretically heart rate should be known via senses intrinsic to humans, in practice it is actually quite difficult to know, and I think there are many interesting social interactions that pulse-display could trigger.

Currently Eric Boyd and Chung-Hay are working on this device.

==Design Thoughts==

Sensor:

Generally all commercial ones a just little electrocardiogram units.

From http://en.wikipedia.org/wiki/Electrocardiography :

<blockquote>"An electrocardiogram is obtained by measuring electrical potential between various points of the body using a biomedical instrumentation amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body."
</blockquote>

However, for this project I think the best solution may be optical. There is apparently a small change in the optical properties of your skin with your blood pressure, meaning that pulse can be observed by an optical sensor pressed against your skin. I have a working "pulse watch" which uses this principle.

Display: Initially, only to people other than the wearer, via a string of LEDs inside the choker. I imagine the pulsing centered on the LED in the center, and going out to all, then coming back in, similar to how some star trek (?) lights worked when the computer talked. There may also be a lone vibrator, which could be used to signal to the wearer a variety of things (like pulse, but also time or low battery etc). Although this is really stretching the definition of "display", the device might also log data for later retrieval via USB.

Armature: Choker, plus it is likely that it will have to have a pendant hanging from it, which would contain the circuit and battery. The vibrator might also be in the pendant. The hard part of the armature will be how to wire the LEDs in a "soft" way (no ribbon cables around our necks!). Also, the optical sensor will have to be held against the neck even while the neck moves, you breathe, etc - that might be tricky. We have experimented with conductive thread with crimp beads, but they are very difficult to use, and end up being more fragile than is really acceptable. We are presently investigating silk-screening conductive paint, and flexible PCBs are possible armature ideas.

Electronics: For prototype, arduino and probably a small op-amp circuit modeled on the circuit inside the watch. To make it wearable, we'll probably have to use an attiny or other similarly super small device.

==Prior Art==

I already have a set of chokers with surface mount LEDs inside (I've shown this at prior meetings during show and tell). I am unsure of how the LEDs are wired - it's possible that they are all controlled from the same wire, in which case the device will not be able to display as above, and instead will simply flash. I got the chokers from [http://store.rebeccas.com/store/merchant.mvc?Screen=PROD&Product_Code=LI1069&Category_Code= Rebeccas] for only $2.15 each, so if they are suitable they make great kit components.

Reverse engineering the choker's flexible PCB:

<pre>
Lights: 1-12, counted from the batteries
(Only lights 1, 3, 5, 6, 7, 8, 10, 12 are populated)
Pins: 1-6, counted from the big ground of the batteries nearest the ribbon cable

Schematic Reverse Engineer:
Pin 1: V+ for all lights
Pin 2: V- for 1, 3, 5
Pin 3: V- for 2, 4
Pin 4: V- for 6, 8
Pin 5: V- for 7, 9, 11
Pin 6: V- for 10, 12

Apparently the LEDs are very easy to fry, since both green and pink choker now have many non-functional LEDs
</pre>

I've done some google searches, but I haven't been able to find anything like this. There are some pulse-sensing watches, for instance [http://www.chinavasion.com/product_info.php/pName/exercise-watch-pulse-calorie-reader/ Chinavasion: Exercise Watch - pulse + calorie reader] or see some reviews at [http://www.consumersearch.com/heart-rate-monitors Heart Rate Monitors]. These devices almost universally have a small display, but I think a haptic solution could be greatly superior.

[[Image:PulseWatch.jpg]]

You can see in the image a small heart on the left side of the display. When it's sensing your pulse, this heart blinks with your pulse, which is super cool. The sensor is under my index finger on the right hand side. You need to just touch the sensor - if you press hard, that destroys the signals (presumably because the pressure makes it so your skin doesn't respond to the pressure of your blood and instead just responds to the pressure of your hold...)

==== Technicolor Dream Suit ====
[[User:Cmaier|Cmaier]] 09:56, 20 August 2009 (PDT)

Just some thoughts I had, but now it needs to be '''''made''''' Prior Art '''''immediately'''''
(If you talk with the [http://www.asterix.com/encyclopedia/characters/caius-fatuous.html ''lanista''] of the
[http://en.wikipedia.org/wiki/Circus_Maximus Circus Maximus] about a possible engagement,
you need to be '''super''' careful that you, or your ideas, don't stay there inadvertently and get fed to the lions):

It would be '''''ultra'' cool''' to wear a Technicolor Dream Suit costume at Burning Man studded with a network of blinkenlights,
where the blinking color patterns of your costume would give information about your heartbeat, blood chemistry,
[http://books.google.com/books?id=OPC7Qhm6Y6sC&pg=PA124&lpg=PA124&dq=%22Was+ich+gesehn,+verrate+ich+nicht,+Ich+habe+zu+schweigen+versprochen,+Erlaubt+ist+mir+zu+sagen+kaum,+O+Gott!+was+ich+gerochen!%22&source=bl&ots=pjTl5X1ULR&sig=k8k6KFj6iptI5-PDTAhDPLnuk-A&hl=en&ei=8G6NSojnKIKwswPc15HnCQ&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=%22Was%20ich%20gesehn%2C%20verrate%20ich%20nicht%2C%20Ich%20habe%20zu%20schweigen%20versprochen%2C%20Erlaubt%20ist%20mir%20zu%20sagen%20kaum%2C%20O%20Gott!%20was%20ich%20gerochen!%22&f=false and more ...]

On the Technicolor Dream Suit, each blinkenlight is attached to its own microcontroller that, in turn, is also attached to an array of sensors (starting with an infrared LED and a sensor for heartbeat and pulse oximetry, but by no means ending there, (see star trek TOS episode with blind ambassador), and with the sensors communicating with each other (and maybe wirelessly with other costumes of a Central Scrutinizer). A network of sensor studded processor nodes means that you have a lot of redundancy to separate the wheat (the signal[s] you're interested in) from the chaff (artefacts due to you moving around, external interference, or some wardrobe malfunction), and a lot of distributed processing power, so you don't really need quite as efficient algorithms as if you put all your processing power in one place - death of the big hunkin' DSP board by a thousand arduinos (yes, you'd have to come up with distributable algorithms, but I've heard rumors that all the web weenies who want to join the cloud computing bandwagon are already trying this, anyhow).

For starters (since I neither have the time nor the $$$ to afford really cool sensors and write complex programs), it would be nice to just have the microcontroller (or maybe CPLD or some such) nodes with the blinkenlights, talking to each other in such way that they play [http://www.youtube.com/watch?v=a9xAKttWgP4 the Game of Life] ... would fit nicely into this years' Burning Man theme of "Evolution". In fact, I already bought two white jumpsuits, put some LEDs on order, and did some inquiries how to get stuff from DigiKey real fast. The missing bits are conductive thread or equivalent, and a way to build a lot of PCBs and program chips on them fast.

Of course, for more than one reason, a patient gown would be more suitable for such a kind of Technicolor Dream Suit - cum - biosensor array - cum - distributed processing - cum - wireless Burning Man costume:
The patient gown leaves the butt exposed.

==Hack Notes==

[[Pulse_Necklace_24June2009|June 24th, 2009]]

[[Pulse_Necklace_01July2009|July 1st, 2009]]

[[Pulse_Necklace_08July2009|July 8st, 2009]]

[[Pulse_Necklace_15July2009|July 15th, 2009]]

[[Pulse_Necklace_21July2009|Circuit Research, July 21st, 2009]]

[[Pulse_Necklace_22July2009|July 22th, 2009]]

[[Pulse_Necklace_27July2009|Custom Stencil Design Research, July 28th, 2009]]

[[Pulse_Necklace_29July2009|July 29th, 2009]]

[[Pulse_Necklace_02Aug2009|August 2nd, 2009]]

[[Pulse_Necklace_05Aug2009|August 5th, 2009]]

[[Pulse_Necklace_12Aug2009|August 12th, 2009]]

[[Pulse_Necklace_16Aug2009|August 16th, 2009]]

==Lessons Learned Along the Way==

[[Conductive_Paint_Lessons|Lessons on Conductive Paint]]

[[Paint_Thinning_Lessons|Lessons on Paint Thinning ]]

[[Category:Sensebridge]]

Displays

2009-07-30T11:03:30Z

Cmaier: /* Useful ICs */

==Vibration (pager motor)==
[[Image:Motors.jpg]]

The 3 kinds of motors currently in the Cyborg parts bucket. Some specs on these are in the [http://spreadsheets.google.com/ccc?key=p--xq5BkJD5E_DTRwEdLcEA&hl=en vibromotor spreadsheet]

==== Spreadsheet explanation ====

Spreadsheet columns
# The first number in the 'at this V' column is the lowest voltage we were able to get the thing to go on at all. We usually had to help it get started.
# The next column, 'draw at (mA),' is the draw at that voltage, according to the really lovely fancy power supply upstairs with the digital outputs.
# The ohm values are just division according to Ohm's Law, '''V / I = R''' .
# The power consumption of the motors tested is '''P = V * I''' .
The thinking behind 'starts from Most Stuck' is that the point at which it stops on its own is the stickiest point, and it would be good to know how much voltage it takes to overcome that. The process we used is this:
# get the motor running
# drop the voltage until it stops
# raise the voltage until it starts on its own
# repeat once or twice
It is likely to vary on a motor-to-motor basis but this is at least a starting point. Likely PWM is going to be a more consistent and cleaner way to vary the feel of the vibration. I'd like to come up with some PWM specs, not sure yet what those would be exactly.

==== Useful ICs ====

[[User:Cmaier|Cmaier]] 04:03, 30 July 2009 (PDT)

For an unrelated IRC discussion, I came across a PWM driver IC that might be interesting for driving vibrator motors, too: [http://www.onsemi.com/PowerSolutions/product.do?id=CAT4109 ON Semiconductor CAT4109]. It's [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=CAT4109V-GT2TR-ND available through Digkey]. More can be found [http://pony.noisebridge.net/~cmaier/led_drive/ here].

==Heat==
==Pressure==
==Electrical (TENS - transcutaneous electrical nerve stimulation)==
==Visual Overlays / Edge of Glasses==
==Audio Overlays==
==Smell==
==Pico projectors==
==TMS - open TMS project==
==Phased Sound Array==

[[Category:Sensebridge]]

Displays

2009-07-30T10:27:13Z

Cmaier: /* Vibration (pager motor) */

==Vibration (pager motor)==
[[Image:Motors.jpg]]

The 3 kinds of motors currently in the Cyborg parts bucket. Some specs on these are in the [http://spreadsheets.google.com/ccc?key=p--xq5BkJD5E_DTRwEdLcEA&hl=en vibromotor spreadsheet]

==== Spreadsheet explanation ====

Spreadsheet columns
# The first number in the 'at this V' column is the lowest voltage we were able to get the thing to go on at all. We usually had to help it get started.
# The next column, 'draw at (mA),' is the draw at that voltage, according to the really lovely fancy power supply upstairs with the digital outputs.
# The ohm values are just division according to Ohm's Law, '''V / I = R''' .
# The power consumption of the motors tested is '''P = V * I''' .
The thinking behind 'starts from Most Stuck' is that the point at which it stops on its own is the stickiest point, and it would be good to know how much voltage it takes to overcome that. The process we used is this:
# get the motor running
# drop the voltage until it stops
# raise the voltage until it starts on its own
# repeat once or twice
It is likely to vary on a motor-to-motor basis but this is at least a starting point. Likely PWM is going to be a more consistent and cleaner way to vary the feel of the vibration. I'd like to come up with some PWM specs, not sure yet what those would be exactly.

==== Useful ICs ====

[[User:Cmaier|Cmaier]] 03:27, 30 July 2009 (PDT)

For an unrelated IRC discussion, I came across a PWM driver IC that might be interesting for driving vibrator motors, too: [http://www.onsemi.com/PowerSolutions/product.do?id=CAT4109 ON Semiconductor CAT4109]. It's [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=CAT4109V-GT2TR-ND available through Digkey].

==Heat==
==Pressure==
==Electrical (TENS - transcutaneous electrical nerve stimulation)==
==Visual Overlays / Edge of Glasses==
==Audio Overlays==
==Smell==
==Pico projectors==
==TMS - open TMS project==
==Phased Sound Array==

[[Category:Sensebridge]]

Displays

2009-07-30T09:56:46Z

Cmaier: /* Spreadsheet explanation */

==Vibration (pager motor)==
[[Image:Motors.jpg]]

The 3 kinds of motors currently in the Cyborg parts bucket. Some specs on these are in the [http://spreadsheets.google.com/ccc?key=p--xq5BkJD5E_DTRwEdLcEA&hl=en vibromotor spreadsheet]

==== Spreadsheet explanation ====

Spreadsheet columns
# The first number in the 'at this V' column is the lowest voltage we were able to get the thing to go on at all. We usually had to help it get started.
# The next column, 'draw at (mA),' is the draw at that voltage, according to the really lovely fancy power supply upstairs with the digital outputs.
# The ohm values are just division according to Ohm's Law, '''V / I = R''' .
# The power consumption of the motors tested is '''P = V * I''' .
The thinking behind 'starts from Most Stuck' is that the point at which it stops on its own is the stickiest point, and it would be good to know how much voltage it takes to overcome that. The process we used is this:
# get the motor running
# drop the voltage until it stops
# raise the voltage until it starts on its own
# repeat once or twice
It is likely to vary on a motor-to-motor basis but this is at least a starting point. Likely PWM is going to be a more consistent and cleaner way to vary the feel of the vibration. I'd like to come up with some PWM specs, not sure yet what those would be exactly.

==Heat==
==Pressure==
==Electrical (TENS - transcutaneous electrical nerve stimulation)==
==Visual Overlays / Edge of Glasses==
==Audio Overlays==
==Smell==
==Pico projectors==
==TMS - open TMS project==
==Phased Sound Array==

[[Category:Sensebridge]]

Makerbot/Electronics/Stepper driver

2009-07-22T03:13:35Z

Cmaier:

=MakerBot electronics: Stepper motor driver=
[[User:Cmaier|Cmaier]] 20:13, 21 July 2009 (PDT)

Assembly instructions are on the [http://www.reprap.org/bin/view/Main/Stepper_Motor_Driver_2_3 RepRap page]

==Schematic==
[[Image:Stepper_driver_schematic.jpg|Stepper driver schematic]]

==Test==
After assembling the first stepper motor driver, I tested it with my arduino and a stepper motor test program I wrote for the muralizer stepper motors. Here's [http://pony.noisebridge.net/~cmaier/makerbot/stepper_driver_test.avi a movie].

File:Stepper driver schematic.jpg

2009-07-22T02:49:30Z

Cmaier: Stepper driver schematic

Stepper driver schematic

Makerbot/Electronics

2009-07-22T02:21:43Z

Cmaier:

=MakerBot electronics=
[[User:Cmaier|Cmaier]] 19:20, 21 July 2009 (PDT)

----

[http://wiki.makerbot.com/cupcake-electronics-assembly Documentation]

----

==[[Makerbot/Electronics/Stepper_driver|Stepper motor driver]]==

==[[Makerbot/Electronics/endstop_switches|Endstops]]==

==Extruder controller==

==[[Makerbot/Electronics/Motherboard|Motherboard]]==

Makerbot/Electronics

2009-07-22T02:20:26Z

Cmaier: New page: =MakerBot electronics= ~~~~ ---- [http://wiki.makerbot.com/cupcake-electronics-assembly Documentation] ---- ==Stepper motor driver== ==[[Electronics/end...

=MakerBot electronics=
[[User:Cmaier|Cmaier]] 19:20, 21 July 2009 (PDT)

----

[http://wiki.makerbot.com/cupcake-electronics-assembly Documentation]

----

==[[Electronics/Stepper_driver|Stepper motor driver]]==

==[[Electronics/endstop_switches|Endstops]]==

==Extruder controller==

==[[Electronics/Motherboard|Motherboard]]==

Makerbot

2009-07-22T02:10:46Z

Cmaier:

= Building =
This describes the current progress of the building of the Makerbot. Instructions are found [http://wiki.makerbot.com/cupcake here], and a forum for it is found [http://wiki.makerbot.com/forum/c-77688/talk-about-makerbot here].

Noisebridge's Makerbot kit, thoughtfully purchased by Mitch, arrived at 83C on Monday evening, July 20. Leading the assembly team is Joachim, along with Christoph, Rachel, Steve (Mr Domino), and Jeffrey (ieatlint).

It took about an hour and a half to go through and check the parts against the [http://pony.noisebridge.net/~cmaier/makerbot/parts_lists.ods parts list]. <strike>We think we are missing a bag of "laser cut pulleys" but it's hard to be completely sure, as there are a LOT of parts and they are not all labeled exactly as in the parts list</strike> A bag of "laser cut pulleys" was replaced by MakerBot-made pulleys, but the parts lists weren't updated. We determined to start assembly anyway.

== Cupcake [[Makerbot/Electronics|Electronics]] Assembly ==
[http://wiki.makerbot.com/cupcake-electronics-assembly Instructions] Christoph soldering one of the [[Makerbot/Electronics/Stepper_driver|stepper motor drivers]], one of the [[Makerbot/Electronics/endstop_switches|endstop switches]], and the SMD parts on the [[Makerbot/Electronics/Motherboard|motherboard]] with only occasional bitching to people to '''''STOP MOVING THE TABLE'''''.

== Cupcake Pulley Assembly ==
[http://wiki.makerbot.com/cupcake-pulley-assembly Instructions].

== Cupcake CNC Body Assembly ==
We got the first part of the body together without difficulty, but had trouble with the Z stage as one of the parts had changed from when the docs were written. The Z stage rod holding guides changed from being O-shaped to being U-shaped, and are marked "Z guides". The forums told us to use them anyway.

The next problem was with threaded rods, which had been cut to size. The ends of some would not take a nut. We solved this with judicious use of the bench grinder. There were LOTS of nut/rod jokes, and we were in a state where they were actually funny! [[User:Rachel|Rachel]] 10:08, 21 July 2009 (PDT)

Progressed to and including the step entitled "Z-stage stepper wiring" as detailed on the body assembly [http://wiki.makerbot.com/cupcake-body-assembly instructions]. The body assembly is nearly completed. [[User:Ieatlint|Ieatlint]] 03:52, 21 July 2009 (PDT)

== Cupcake Y Stage Assembly ==
[http://wiki.makerbot.com/cupcake-y-stage-assembly Instructions].

== Cupcake X Stage Assembly ==
[http://wiki.makerbot.com/cupcake-x-stage-assembly Instructions].

== Plastruder MK3 Assembly ==
[http://wiki.makerbot.com/plastruder-mk3-assembly Instructions].
Progressed through to end of Heater Barrel Assembly. Continue at Filament Drive Mechanism. [[User:Miloh|Miloh]] 04:24, 21 July 2009 (PDT)

Makerbot/Electronics/Stepper driver

2009-07-22T02:08:32Z

Cmaier: New page: =MakerBot electronics: Stepper motor driver= ~~~~

=MakerBot electronics: Stepper motor driver=
[[User:Cmaier|Cmaier]] 19:08, 21 July 2009 (PDT)

NBC 2009July19

2009-07-22T01:32:17Z

Cmaier: /* Show & Tell */

=Meeting Minutes, July 19th, 2009=

==Show & Tell==

Eric brought in the ultrasonic listening toy, and many people tried it out, listening to the emitter and to coins, laptops, etc. You can even point the emitter and receiver in the same direction, and listen to the bounce, allowing you to know if an object is in front of you (but it only has a 1 foot or so range)

Chung-Hay showed off the conductive paint and a new edible silver glaze.
Chris tried to impress her by buying some pastries and [http://pony.noisebridge.net/~cmaier/recherche_du_temps_perdu/ connecting them to arduino blinkenlights].

Chris showed Skory and Eric a [http://www.ecircuitcenter.com/Circuits_Audio_Amp/BJT%20Current_Source/BJT_Current_Source.htm <strike>new</strike> well-known standard circuit] for using a PNP transistor which should save a little bit of power when using transistors as switches (but we need an extra resistor between the ATMEGA and the gate).

Jorgen showed a couple of flashlights from DealExtreme which are infrared and ultraviolet. They are very neat.

Skory showed off his new tongue electrode array, which he built with tiny stainless steel wires and silicone (not the stuff you can buy for your house, it contains fungicide, you must use the stuff intended for use in aquariums).

Eric talked about a talk given by Prof. Michael M Merzenich PhD at the [http://www.futuresalon.org/2009/07/future-salon-the-brain-plasticity-revolution-fr-july-17.html Future Salon] on brain plasticity. It was a great talk, although focused more on the sociological implications of our knowledge of how the brain works. Eric talked with him afterward and he is interested in doing studies on sensory augmentation. Eric will follow up with an email to him about what we're doing, and see exactly what he's interested in studying.

People

2009-07-22T01:17:08Z

Cmaier:

Sensebridge

2009-07-22T01:15:35Z

Cmaier:

=Sensebridge: The Noisebridge Cyborg Group=
[[Image:CoinTypePagerMotors.jpg|right|350px|title|Coin Type pager Motor]]

"If you can't beat the robot armies, join them."

We are concerned with human-machine interfaces.

==Motivations==

We want to "make the invisible visible", to bridge our senses. Many group members were inspired years ago by this [http://www.wired.com/wired/archive/15.04/esp.html awesome Wired article], which describes obtaining an <i>unerring sense of direction</i> via a compass belt. Is the brain really plastic enough to adapt to entirely new senses? How natural would it feel after you've fully adapted? Then what happens when you take the device off?

What new sense do you want? What existing sense might it map onto?

==Terminology==

To avoid confusion (where possible) we'll try to use these terms.

"Sensor" is the device that detects external stuff that the body (probably) can't detect. Sensors can be divided into those that sense the world, and those that digitize a user's actions. The latter are more commonly called "human input devices", (HID's).

"Display" is the way the device shows data to the body (not necessarily visually). This gets around the device-centric / body-centric problem that shows up when using the terms input & output.

"Armature" is the physical component of the device: the belt, hat, armband, etc; distinct from the electronics.

==Mailing List==

We have created a [https://www.noisebridge.net/mailman/listinfo/cyborg cyborg mailing list] on the Noisebridge server. Please join us!

==Component Sourcing==

Here are pages for discussing:

===[[Sensors|sensors]]===
detect a property of the world

===[[Displays|displays]]===
communicate it to the body/mind
===[[Armatures|armatures]]===
hold the above together and in the proper place on the body

They also include a list of all known/speculated types of each.

==Sensor and Display API==

*What might that mean?
**A standard protocol that can:
**#encompass most sensory data of the sort we are interested in researching
**#allow for presentation of any those data through any of a wide variety of modalities

*Why?
**Plug-and-play(ish) interoperability of sensors and displays. Build three sensors and three displays, and we have 9 possible combinations, und so weiter.
**Simplify development by separating sensing and presentation design/tasks.

*How?
**On the data sensing end:
**#Identify a primary set of interesting stimuli, consider various encodings thereof.
**#Abstract away from the physical phenomena the stimuli represent and look instead at common patterns in the data streams.
**#???
**On the data display end:
**#Identify and prototype a number of display methods.
**#For each method think of:
**#*What modulations of the signal are possible; intensity, spacing, direction, timing...? Based on that, what is the theoretical bandwidth of that method?
**#*How sensitive is the average person there? How much of the signal can the brain interpret meaningfully (too much noise vs. too weak of a signal)? Based on that, what is the <em>practical</em> bandwidth that we might expect?

==Current Projects==
[[Compass Vibro Anklet|Compass Vibro-Anklet]]

[[Eyes in the back of your back]]

[[Tongue Tingler|Tongue Tingler (Trans-lingual Electric Nerve Stimulator)]]

[[Free hands input device]]

[[Pulse Necklace]]

[[QuickLook Displays]]

[[UltraSonicHearing|Ultrasonic Hearing / Echolocation]]

[[List of senses we do not possess]]

===Miscellaneous Distractions===

[http://pony.noisebridge.net/~cmaier/recherche_du_temps_perdu/ Edible interconnects]

==Cybernetic Theory==

Cybernetic loop of GPS + vibrating hat, [https://www.noisebridge.net/images/d/d7/Find_Treasure_%28GPS%29.jpg diagram].

Pseudo-cybernetic loop showing neural integration of artificial sensory system, [https://www.noisebridge.net/images/8/8f/Sensory_Addition_%281.5_order%29.jpg diagram].

[http://en.wikipedia.org/wiki/Cybernetic Cybernetics page on Wikipedia]

==Links==
Youtube of experimenter stimulating his face with small electrical pulses to produce externally controlled movements: http://www.youtube.com/watch?v=dy8zUHX0iKw

http://transcenmentalism.org/OpenStim/tiki-index.php

http://openeeg.sourceforge.net/doc/

http://www.biotele.com/ - remote control cockroach

http://www.instructables.com/id/Breath-powered-USB-charger/

VibroHat in action at BIL 2008:
http://www.flickr.com/photos/quinn/2307779651/in/photostream/

[[Lamont's PWM code]]

==Meeting Notes==

[[NBC_2009Mar15|March 15, 2009]]

[[NBC_2009Mar22|March 22, 2009]]

[[NBC_2009Mar29|March 29, 2009]]

[[NBC_2009Apr05|April 5, 2009]]

[[NBC_2009Apr19|April 19, 2009]]

(the meetings continue apace; the minutes, sadly not)

[[NBC_2009July12|July 12, 2009]]

[[NBC_2009July13|Hack Session July 13, 2009]]

[[NBC_2009July19|July 19, 2009]]

[[Category:Sensebridge]]

User:Cmaier

2009-07-16T08:50:54Z

Cmaier: New page: Image:YoungHacker.jpg Image:CM_puppy.jpg ---- ===ssh public key=== <pre>ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsSyKBQ53qd+6GKwKCG3L9ZOl33EJTeTdkb1tfw4DurElJi+5LBaDHulRPy5m98T3OysTfNmY...

[[Image:YoungHacker.jpg]]
[[Image:CM_puppy.jpg]]
----
===ssh public key===
<pre>ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAsSyKBQ53qd+6GKwKCG3L9ZOl33EJTeTdkb1tfw4DurElJi+5LBaDHulRPy5m98T3OysTfNmYHrF5VeGWBP/En0A0/4PqdrkpbiYxmRdLB0d4qaSq9/hz48bOoRacrzew26e3dT7jxF+MXvzDCSGEYUZR1nf3O9ckLP81aB6AwxNIiWo5fiSDkfOIaYPjBC6uQl0xxH1U6DanI4/6OmO0IkE6ljxhURPgrsusLDrdL4rzih5CeR1wpeHnwgvuhmOT52JikyA5WGu4G7RGSjtXA1EjqoHvAQDTySRypWQ07Z9e9nTcNosDDmgYFv1FT886r1Nm7OHuc5gSyd180FXHmw== cmaier@DrEvil</pre>
===login entry===
<pre>% sudo adduser --gecos 'C.Maier' cmaier</pre>

File:ChcocolatePyramid.png

2009-07-16T08:38:05Z

Cmaier: A Haary affair.

A Haary affair.

File:CM puppy.jpg

2009-07-16T08:34:53Z

Cmaier: I haz cute puppy.

I haz cute puppy.

File:YoungHacker.jpg

2009-07-16T08:28:18Z

Cmaier: Me at age 17, testing my 1st self-built computer

Me at age 17, testing my 1st self-built computer

File:Spam.jpg

2009-04-20T00:58:59Z

Cmaier: "Noisebridge wiki has been around for some time and I have never seen spam on it." - Rachel

"Noisebridge wiki has been around for some time and I have never seen
spam on it." - Rachel

PIR Sensors

2009-04-20T00:51:42Z

Cmaier:

<h2>PIR Sensors Info</h2>

Pyroelectric devices, such as the PIR sensor, have elements made of a crystalline material that generates
an electric charge when exposed to infrared radiation. The changes in the amount of infrared striking the
element change the voltages generated, which are measured by an on-board amplifier. The device
contains a special filter called a Fresnel lens, which focuses the infrared signals onto the element. As the
ambient infrared signals change rapidly, the on-board amplifier trips the output to indicate motion.
--From the PIRSensor-V1.1 pdf (linked below)

<h2> PIR Sensor Datasheets</h2>
pdf warning!

[[image:PIR Sensor 2 Element Datasheet.pdf]]<br/>
[[Image:PIRSensor-V1.1.pdf‎]]

<h2>Schematics for PIR motion sensor boards</h2>
Hundreds of circuit boards incorporating PIR motion sensors were donated to Noisebridge. They are available for use immediately, and they are currently located in the storage area of the 83c Mezzanine.
There's a page for the schematics of these [[PIR motion sensor schematics|PIR motion sensor boards]]

There's also a pdf of the same schematics at: [[image:PIR_SensorBoardSchematic.pdf]]<br/>
and an [[PIR_motion_sensor_frontend_SPICE_simulation|LTspice schematic of the sensor front end circuit]]: [[image:PIR_review_001.doc]] (needs some extraction and installation)

[[Image:03.PIR_Cellphone_Board2.png|250px]]
PIR-less motion sensor board (see G101 for PIR placement location)

[[Image:02_PIR_Cell.png|250px]]
Backside of PIR motion sensor board

On 4/7/09 I hooked up a scope to the sensor output (pin 8 on the PIC) and 12V on the power input (marked [P5], next to LED, polarity on bottom silkscreen) , and got lovely +5 logic high signal by waving my hand over the sensor, 300-400 ms long. These units are ready to rock! [[User:Jtfoote|Jtfoote]] 15:45, 7 April 2009 (PDT)

Brainstorm ideas for projects incorporating this large number of boards and sensors:

* Interactive coffee table like that from EMSL: http://www.evilmadscientist.com/article.php/tablekits ?

PIR motion sensor frontend SPICE simulation

2009-04-20T00:49:31Z

Cmaier: New page: <h1>PIR review</h1> ''Christoph Maier'' While a [http://bwrc.eecs.berkeley.edu/Classes/ICBook/SPICE/ SPICE] simulation doesn't really provide enough insight to design circ...

<h1>[[PIR_Sensors|PIR]] review</h1>
''Christoph Maier''

While a [http://bwrc.eecs.berkeley.edu/Classes/ICBook/SPICE/ SPICE] simulation doesn't really provide enough insight to design circuits, it's a rather useful tool to verify what an existing circuit design is actually doing.

Linear Technology provides a fully functional SPICE type simulator, [http://www.linear.com/designtools/software/#Spice LTspice], for free (unless you try to compete with them).

It is possible to import device models from other manufacturers, e.g. [http://focus.ti.com/docs/prod/folders/print/tlc272.html Texas Instruments's TLC272]: [http://www.ti.com/litv/zip/sloj092].

A simulation of the PIR sensor front end circuit [[Image:PIR_skeem_Sensor.jpg|800px]] can provide some insight:
[[Image:Screenshot-LTspice_IV_-_PIR_review_001.asc.png|960px]]

The noisebridge wiki doesn't allow me to upload the schematic files directly, so you'll have to paste them into plain text files and save them, together with the extracted TLC272 models, into the directory you run LTspice in.

Save the following as '''PIR_review_001.asc'''
<pre>
Version 4
SHEET 1 1484 680.
WIRE -80 -192 -512 -192
WIRE 16 -192 -80 -192
WIRE 336 -192 16 -192
WIRE 960 -192 336 -192
WIRE 1184 -192 960 -192
WIRE 1312 -192 1184 -192
WIRE 16 -160 16 -192
WIRE 960 -160 960 -192
WIRE 1312 -160 1312 -192
WIRE 496 -80 224 -80
WIRE 544 -80 496 -80
WIRE 656 -80 624 -80
WIRE 496 -32 496 -80
WIRE 656 -16 656 -80
WIRE 960 -16 960 -80
WIRE 16 16 16 -80
WIRE 48 16 16 16
WIRE 224 16 224 -80
WIRE 224 16 128 16
WIRE 1184 32 1184 -192
WIRE 336 48 336 -192
WIRE 960 48 960 -16
WIRE 1104 48 960 48
WIRE 1152 48 1104 48
WIRE 224 64 224 16
WIRE 304 64 224 64
WIRE 1312 64 1312 -80
WIRE 1312 64 1216 64
WIRE 1344 64 1312 64
WIRE 496 80 496 48
WIRE 496 80 368 80
WIRE 576 80 496 80
WIRE 656 80 656 48
WIRE 656 80 576 80
WIRE 736 80 656 80
WIRE 848 80 800 80
WIRE 896 80 848 80
WIRE 1056 80 896 80
WIRE 1152 80 1056 80
WIRE -224 96 -304 96
WIRE -144 96 -224 96
WIRE -96 96 -144 96
WIRE 160 96 -32 96
WIRE 304 96 160 96
WIRE -512 128 -512 -192
WIRE 16 144 16 16
WIRE 848 144 848 80
WIRE 960 144 960 48
WIRE 16 160 16 144
WIRE 48 160 16 160
WIRE 160 160 160 96
WIRE 160 160 128 160
WIRE 1104 160 1104 48
WIRE -304 176 -304 96
WIRE 224 192 224 64
WIRE 848 272 848 224
WIRE 896 272 848 272
WIRE 960 272 960 224
WIRE 960 272 896 272
WIRE -144 288 -144 96
WIRE 16 288 16 160
WIRE 160 288 160 160
WIRE 960 288 960 272
WIRE 1056 288 1056 80
WIRE -512 400 -512 208
WIRE -304 400 -304 256
WIRE -304 400 -512 400
WIRE -144 400 -144 368
WIRE -144 400 -304 400
WIRE 16 400 16 368
WIRE 16 400 -144 400
WIRE 96 400 16 400
WIRE 160 400 160 352
WIRE 160 400 96 400
WIRE 224 400 224 256
WIRE 224 400 160 400
WIRE 336 400 336 112
WIRE 336 400 224 400
WIRE 960 400 960 368
WIRE 960 400 336 400
WIRE 1056 400 1056 352
WIRE 1056 400 960 400
WIRE 1104 400 1104 224
WIRE 1104 400 1056 400
WIRE 1184 400 1184 96
WIRE 1184 400 1104 400
WIRE 96 432 96 400
FLAG 96 432 0
FLAG -80 -192 dd
FLAG 160 96 inp
FLAG 224 -80 inn
FLAG 16 144 div1
FLAG -224 96 in
FLAG 1344 64 sensor
IOPIN 1344 64 Out
FLAG 960 -16 div22
FLAG 896 272 div21
FLAG 576 80 out1
FLAG 896 80 in2
SYMBOL Opamps\\opamp2 336 16 R0
WINDOW 3 16 96 Invisible 0
WINDOW 38 16 124 Left 0
SYMATTR InstName U102a
SYMATTR Value ""
SYMATTR SpiceModel TLC272
SYMBOL voltage -512 112 R0
SYMATTR InstName Vdd
SYMATTR Value 5
SYMBOL res 0 -176 R0
SYMATTR InstName R111
SYMATTR Value 2.2k
SYMBOL res 0 272 R0
SYMATTR InstName R113
SYMATTR Value 2.2k
SYMBOL res 144 144 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R112
SYMATTR Value 1Meg
SYMBOL res 480 -48 R0
SYMATTR InstName R104
SYMATTR Value 470k
SYMBOL res -160 272 R0
SYMATTR InstName R105
SYMATTR Value 47k
SYMBOL res 144 0 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R110
SYMATTR Value 820
SYMBOL cap 640 -16 R0
SYMATTR InstName C106
SYMATTR Value 47n
SYMBOL res 640 -96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R108
SYMATTR Value 10k
SYMBOL cap -32 80 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C104
SYMATTR Value 100n
SYMBOL voltage -304 160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vin
SYMATTR Value PULSE(0 5m 10m 1n 1n 40m 100m)
SYMBOL cap 208 192 R0
SYMATTR InstName C109
SYMATTR Value 470p
SYMBOL cap 144 288 R0
SYMATTR InstName C110
SYMATTR Value 470p
SYMBOL Opamps\\opamp2 1184 0 R0
WINDOW 3 16 96 Invisible 0
WINDOW 38 16 124 Left 0
SYMATTR InstName U102b
SYMATTR Value ""
SYMATTR SpiceModel TLC272
SYMBOL cap 800 64 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C105
SYMATTR Value 100n
SYMBOL res 944 -176 R0
SYMATTR InstName R102
SYMATTR Value 10k
SYMBOL res 944 272 R0
SYMATTR InstName R109
SYMATTR Value 10k
SYMBOL res 944 128 R0
SYMATTR InstName R107
SYMATTR Value 820
SYMBOL res 832 128 R0
SYMATTR InstName R106
SYMATTR Value 1Meg
SYMBOL res 1296 -176 R0
SYMATTR InstName R103
SYMATTR Value 22k
SYMBOL cap 1088 160 R0
SYMATTR InstName C107
SYMATTR Value 470p
SYMBOL cap 1040 288 R0
SYMATTR InstName C108
SYMATTR Value 470p
TEXT -448 304 Left 0 !.include TLC272.5_2
TEXT -442 344 Left 0 !.tran 0 1 0
</pre>

and the following as '''PIR_review_001.plt'''
<pre>
[Transient Analysis]
{
Npanes: 5
Active Pane: 4
{
traces: 1 {524295,0,"V(sensor)"}
X: (' ',1,0,0.1,1)
Y[0]: (' ',1,0,0.4,4)
Y[1]: ('_',0,1e+308,0,-1e+308)
Volts: (' ',0,0,1,0,0.4,4)
Log: 0 0 0
GridStyle: 1
PltMag: 1
PltPhi: 1 0
},
{
traces: 3 {524294,0,"V(in2)"} {524296,0,"V(div21)"} {524297,0,"V(div22)"}
X: (' ',1,0,0.1,1)
Y[0]: (' ',1,2,0.1,3.1)
Y[1]: ('_',0,1e+308,0,-1e+308)
Volts: (' ',0,0,1,2,0.1,3.1)
Log: 0 0 0
GridStyle: 1
PltMag: 1
PltPhi: 1 0
},
{
traces: 1 {524293,0,"V(out1)"}
X: (' ',1,0,0.1,1)
Y[0]: (' ',1,1.4,0.1,2.8)
Y[1]: ('_',0,1e+308,0,-1e+308)
Volts: (' ',0,0,1,1.4,0.1,2.8)
Log: 0 0 0
GridStyle: 1
PltMag: 1
PltPhi: 1 0
},
{
traces: 2 {524290,0,"V(inp)"} {524291,0,"V(div1)"}
X: (' ',1,0,0.1,1)
Y[0]: (' ',4,2.4962,0.0007,2.5039)
Y[1]: ('_',0,1e+308,0,-1e+308)
Volts: (' ',0,0,4,2.4962,0.0007,2.5039)
Log: 0 0 0
GridStyle: 1
PltMag: 1
PltPhi: 1 0
},
{
traces: 1 {524292,0,"V(in)"}
X: (' ',1,0,0.1,1)
Y[0]: ('m',1,-0.0005,0.0005,0.005)
Y[1]: ('_',0,1e+308,0,-1e+308)
Volts: ('m',0,0,1,-0.0005,0.0005,0.005)
Log: 0 0 0
GridStyle: 1
PltMag: 1
PltPhi: 1 0
}
}
</pre>

For people for whom LTspice tastes too much like a commercial product,
here is the netlist:
<pre>
* Z:\data\LTC\LTspiceIV\schematics\noisebridge\PIR_review_001.asc
XU102a inp inn dd 0 out1 TLC272
Vdd dd 0 5
R111 dd div1 2.2k
R113 div1 0 2.2k
R112 inp div1 1Meg
R104 inn out1 470k
R105 in 0 47k
R110 inn div1 820
C106 N001 out1 47n
R108 N001 inn 10k
C104 inp in 100n
Vin in 0 PULSE(0 5m 10m 1n 1n 40m 100m)
C109 inn 0 470p
C110 inp 0 470p
XU102b in2 div22 dd 0 sensor TLC272
C105 in2 out1 100n
R102 dd div22 10k
R109 div21 0 10k
R107 div22 div21 820
R106 in2 div21 1Meg
R103 dd sensor 22k
C107 div22 0 470p
C108 in2 0 470p
.include TLC272.5_2
.tran 0 1 0
.backanno
.end
</pre>

and the log file (with the Texas Instruments opamp model converted from PSPICE to SPICE3 format)
<pre>
--- Expanded Deck Component Count ---
B's 10
C's 13
D's 14
E's 2
G's 10
H's 2
I's 8
J's 4
R's 24
V's 22
tot: 109

--- Expanded Netist ---
* Z:\data\LTC\LTspiceIV\schematics\noisebridge\PIR_review_001.asc
c:u102a:1 u102a:11 u102a:12 5.657e-12
c:u102a:2 u102a:6 u102a:7 20.00e-12
c:u102a:psr u102a:85 u102a:86 79.6e-9
d:u102a:cm+ u102a:81 u102a:82 u102a:dx
d:u102a:cm- u102a:83 u102a:81 u102a:dx
d:u102a:c out1 u102a:53 u102a:dx
d:u102a:e u102a:54 out1 u102a:dx
d:u102a:lp u102a:90 u102a:91 u102a:dx
d:u102a:ln u102a:92 u102a:90 u102a:dx
d:u102a:p 0 dd u102a:dx
e:u102a:cmr u102a:84 u102a:99 inn u102a:99 1
b:u102a:egnd u102a:99 0 v=.5*v(dd)+.5*v(0)
b:u102a:epsr u102a:85 0 v=-246e-6+49.2e-6*v(dd,0)
b:u102a:ense u102a:89 inn v=1.1e-3+v(u102a:88)
b:u102a:fb u102a:7 u102a:99 i=1.120e6*i(v:u102a:b)+-1e6*i(v:u102a:c)+1e6*i(v:u102a:e)+1e6*i(v:u102a:lp)+-1e6*i(v:u102a:ln)+1.12e6*i(v:u102a:psr)
g:u102a:a u102a:6 0 u102a:11 u102a:12 138.2e-6
g:u102a:cm 0 u102a:6 u102a:10 u102a:99 28.46e-9
g:u102a:psr u102a:85 u102a:86 u102a:85 u102a:86 100e-6
g:u102a:rd1 u102a:60 u102a:11 u102a:60 u102a:11 1.382e-4
g:u102a:rd2 u102a:60 u102a:12 u102a:60 u102a:12 1.382e-4
h:u102a:lim u102a:90 0 v:u102a:lim 1k
b:u102a:hcmr u102a:80 inp v=1e2*i(v:u102a:cm+)+1e2*i(v:u102a:cm-)
i:u102a:rp dd 0 617e-6
i:u102a:ss dd u102a:10 dc 58.00e-6
i:u102a:io inn 0 .1e-12
i:u102a:1 u102a:88 0 1e-21
j:u102a:1 u102a:11 u102a:89 u102a:10 u102a:jx
j:u102a:2 u102a:12 u102a:80 u102a:10 u102a:jx
r:u102a:2 u102a:6 u102a:9 100.0e3
r:u102a:cm u102a:84 u102a:81 1k
r:u102a:n1 u102a:88 0 25.7e3
r:u102a:o1 u102a:8 out1 75
r:u102a:o2 u102a:7 u102a:99 75
r:u102a:ss u102a:10 u102a:99 3.448e6
v:u102a:ad u102a:60 0 -.7
v:u102a:cm+ u102a:82 u102a:99 1.16
v:u102a:cm- u102a:83 u102a:99 -2.26
v:u102a:b u102a:9 0 dc 0
v:u102a:c dd u102a:53 dc 1.85
v:u102a:e u102a:54 0 dc .7
v:u102a:lim u102a:7 u102a:8 dc 0
v:u102a:lp u102a:91 0 dc 25
v:u102a:ln 0 u102a:92 dc 25
v:u102a:psr 0 u102a:86 dc 0
vdd dd 0 5
r111 dd div1 2.2k
r113 div1 0 2.2k
r112 inp div1 1meg
r104 inn out1 470k
r105 in 0 47k
r110 inn div1 820
c106 n001 out1 47n
r108 n001 inn 10k
c104 inp in 100n
vin in 0 pulse(0 5m 10m 1n 1n 40m 100m)
c109 inn 0 470p
c110 inp 0 470p
c:u102b:1 u102b:11 u102b:12 5.657e-12
c:u102b:2 u102b:6 u102b:7 20.00e-12
c:u102b:psr u102b:85 u102b:86 79.6e-9
d:u102b:cm+ u102b:81 u102b:82 u102b:dx
d:u102b:cm- u102b:83 u102b:81 u102b:dx
d:u102b:c sensor u102b:53 u102b:dx
d:u102b:e u102b:54 sensor u102b:dx
d:u102b:lp u102b:90 u102b:91 u102b:dx
d:u102b:ln u102b:92 u102b:90 u102b:dx
d:u102b:p 0 dd u102b:dx
e:u102b:cmr u102b:84 u102b:99 div22 u102b:99 1
b:u102b:egnd u102b:99 0 v=.5*v(dd)+.5*v(0)
b:u102b:epsr u102b:85 0 v=-246e-6+49.2e-6*v(dd,0)
b:u102b:ense u102b:89 div22 v=1.1e-3+v(u102b:88)
b:u102b:fb u102b:7 u102b:99 i=1.120e6*i(v:u102b:b)+-1e6*i(v:u102b:c)+1e6*i(v:u102b:e)+1e6*i(v:u102b:lp)+-1e6*i(v:u102b:ln)+1.12e6*i(v:u102b:psr)
g:u102b:a u102b:6 0 u102b:11 u102b:12 138.2e-6
g:u102b:cm 0 u102b:6 u102b:10 u102b:99 28.46e-9
g:u102b:psr u102b:85 u102b:86 u102b:85 u102b:86 100e-6
g:u102b:rd1 u102b:60 u102b:11 u102b:60 u102b:11 1.382e-4
g:u102b:rd2 u102b:60 u102b:12 u102b:60 u102b:12 1.382e-4
h:u102b:lim u102b:90 0 v:u102b:lim 1k
b:u102b:hcmr u102b:80 in2 v=1e2*i(v:u102b:cm+)+1e2*i(v:u102b:cm-)
i:u102b:rp dd 0 617e-6
i:u102b:ss dd u102b:10 dc 58.00e-6
i:u102b:io div22 0 .1e-12
i:u102b:1 u102b:88 0 1e-21
j:u102b:1 u102b:11 u102b:89 u102b:10 u102b:jx
j:u102b:2 u102b:12 u102b:80 u102b:10 u102b:jx
r:u102b:2 u102b:6 u102b:9 100.0e3
r:u102b:cm u102b:84 u102b:81 1k
r:u102b:n1 u102b:88 0 25.7e3
r:u102b:o1 u102b:8 sensor 75
r:u102b:o2 u102b:7 u102b:99 75
r:u102b:ss u102b:10 u102b:99 3.448e6
v:u102b:ad u102b:60 0 -.7
v:u102b:cm+ u102b:82 u102b:99 1.16
v:u102b:cm- u102b:83 u102b:99 -2.26
v:u102b:b u102b:9 0 dc 0
v:u102b:c dd u102b:53 dc 1.85
v:u102b:e u102b:54 0 dc .7
v:u102b:lim u102b:7 u102b:8 dc 0
v:u102b:lp u102b:91 0 dc 25
v:u102b:ln 0 u102b:92 dc 25
v:u102b:psr 0 u102b:86 dc 0
c105 in2 out1 100n
r102 dd div22 10k
r109 div21 0 10k
r107 div22 div21 820
r106 in2 div21 1meg
r103 dd sensor 22k
c107 div22 0 470p
c108 in2 0 470p
.model u102b:jx pjf(is=300.0e-15 beta=658.9e-6 vto=-.151 kf=1.85e-16)
.model u102b:dx d(is=800.0e-18)
.model u102a:jx pjf(is=300.0e-15 beta=658.9e-6 vto=-.151 kf=1.85e-16)
.model u102a:dx d(is=800.0e-18)
.tran 0 1 0
.end

Early termination of direct N-R iteration.
Direct Newton iteration failed to find .op point. (Use ".option noopiter" to skip.)
Starting Gmin stepping
Gmin = 10
vernier = 0.5
vernier = 0.25
vernier = 0.125
Gmin = 5.5165
vernier = 0.0625
vernier = 0.03125
vernier = 0.015625
vernier = 0.0078125
Gmin = 5.49501
vernier = 0.00390625
vernier = 0.00195313
vernier = 0.000976563
vernier = 0.000488281
Gmin = 5.50104
Gmin = 0
Gmin stepping succeeded in finding the operating point.

Date: Sun Apr 19 15:19:26 2009
Total elapsed time: 1.025 seconds.

tnom = 27
temp = 27
method = modified trap
totiter = 10704
traniter = 9333
tranpoints = 3730
accept = 3074
rejected = 656
matrix size = 91
fillins = 130
solver = Normal
Thread vector: 23.4/14.9[2] 8.3/6.4[2] 6.7/4.9[2] 3.4/3.4[1] 2592/500
Matrix Compiler1: 8.84 KB object code size 7.3/4.7/[3.0]
Matrix Compiler2: 9.40 KB object code size 4.9/8.8/[3.2]
</pre>

File:Screenshot-LTspice IV - PIR review 001.asc.png

2009-04-20T00:16:51Z

Cmaier: Screenshot of LTspice schematic of PIR front end amplifier

Screenshot of LTspice schematic of PIR front end amplifier

PIR Sensors

2009-04-19T23:58:24Z

Cmaier:

<h2>PIR Sensors Info</h2>

Pyroelectric devices, such as the PIR sensor, have elements made of a crystalline material that generates
an electric charge when exposed to infrared radiation. The changes in the amount of infrared striking the
element change the voltages generated, which are measured by an on-board amplifier. The device
contains a special filter called a Fresnel lens, which focuses the infrared signals onto the element. As the
ambient infrared signals change rapidly, the on-board amplifier trips the output to indicate motion.
--From the PIRSensor-V1.1 pdf (linked below)

<h2> PIR Sensor Datasheets</h2>
pdf warning!

[[image:PIR Sensor 2 Element Datasheet.pdf]]<br/>
[[Image:PIRSensor-V1.1.pdf‎]]

<h2>Schematics for PIR motion sensor boards</h2>
Hundreds of circuit boards incorporating PIR motion sensors were donated to Noisebridge. They are available for use immediately, and they are currently located in the storage area of the 83c Mezzanine.
There's a page for the schematics of these [[PIR motion sensor schematics|PIR motion sensor boards]]

There's also a pdf of the same schematics at: [[image:PIR_SensorBoardSchematic.pdf]]<br/>
and an LTspice schematic of the sensor front end circuit: [[image:PIR_review_001.doc]] (needs some extraction and installation)

[[Image:03.PIR_Cellphone_Board2.png|250px]]
PIR-less motion sensor board (see G101 for PIR placement location)

[[Image:02_PIR_Cell.png|250px]]
Backside of PIR motion sensor board

On 4/7/09 I hooked up a scope to the sensor output (pin 8 on the PIC) and 12V on the power input (marked [P5], next to LED, polarity on bottom silkscreen) , and got lovely +5 logic high signal by waving my hand over the sensor, 300-400 ms long. These units are ready to rock! [[User:Jtfoote|Jtfoote]] 15:45, 7 April 2009 (PDT)

Brainstorm ideas for projects incorporating this large number of boards and sensors:

* Interactive coffee table like that from EMSL: http://www.evilmadscientist.com/article.php/tablekits ?

File:PIR review 001.doc

2009-04-19T23:57:36Z

Cmaier: uploaded a new version of "Image:PIR review 001.doc": "Word" document containing LTspice IV files to simulate the PIR sensor front end circuit. I apologize for the inconvenience to wrap ASCII text files into a *.doc ... the file type filter forces me

"Word" document containing LTspice IV files to simulate the PIR sensor front end circuit. I apologize for the inconvenience to wrap ASCII text files into a *.doc ... the file type filter forces me to do it.

File:PIR review 001.doc

2009-04-19T23:54:53Z

File:PIR review 001.doc

2009-04-19T23:41:19Z

Cmaier: "Word" document containing LTspice IV files to simulate the PIR sensor front end circuit. I apologize for the inconvenience to wrap ASCII text files into a *.doc ... the file type filter forces me to do it.

Machine Learning Meetup Notes: 2009-03-18

2009-03-24T23:49:27Z

Cmaier:

===Code people wrote===

* Ruby by Zhao [https://www.noisebridge.net/wiki/Machine_Learning_Meetup_Notes_Ruby_Zhao_2]
* Mathematica by Christoph [https://www.noisebridge.net/wiki/Image:NoisebridgeNeuralNetworks_2009MAR17.pdf (PDF, noisebridge still won't let me upload the notebook itself)]

Everyone should upload their code!

File:NoisebridgeNeuralNetworks 2009MAR17.pdf

2009-03-18T05:15:03Z

Cmaier: uploaded a new version of "Image:NoisebridgeNeuralNetworks 2009MAR17.pdf": Neural network workspace; Fermi function neuron and NOR learning added.

Added a neuron with a Fermi function instead of a unit step.

Machine Learning Meetup Notes: 2009-03-11

2009-03-17T23:57:39Z

Cmaier:

==Machine Learning Meetup Notes: 2009-03-11==
[[Image:IMG_4478.JPG|816px]]

We made perceptrons. To learn how, you should go to Wikipedia [http://en.wikipedia.org/wiki/Perceptron]

Also reasonably good: [http://www.cs.usyd.edu.au/~irena/ai01/nn/travtute.htm Neural Networks Tutorial], from the Introduction to Part 5.

===Code people wrote===

* Mathematica, by Christoph ([https://www.noisebridge.net/wiki/Image:NoisebridgeNeuralNetworks.pdf PDF], because noisebridge is ''a little'' too anti-commercial)
* [[Machine Learning Meetup Notes Perceptron Matlab|Matlab/Octave perceptron]] by Jean
* [[User:Elgreengeeto/Python_Perceptron|Python]] by [[User:Elgreengeeto|Skory]]
* [[RachelPerceptronPython|extremely naive Python]] by Rachel
* Ruby by Zhao [https://www.noisebridge.net/wiki/Machine_Learning_Meetup_Notes_Ruby_Zhao]
* C by Cristian [https://www.noisebridge.net/wiki/User:Cortiz]
* [https://www.noisebridge.net/wiki/davids_perceptron.pl Python implementation by David Stainton]
* [[User:Kaufman/LISP_Perceptron|LISP!]] by John Kaufman

Everyone should upload their code!

===Follow-on notes===

Now, if you look at your weights and think about what they mean, you'll notice something odd. At the end, the weights aren't equal! We trained a NAND gate, so every input should have an equal opportunity to change the output, right? Given that last leading question, what would you expect the ideal weights to be? Do the learned weights match that expectation? Why? (Hint: What does "overfitting" mean, and how is it relevant?)

Can you build a training set for an OR gate, and train it? What other operators can you implement this way? All you need to do is build a new training set and try training, which is pretty awesome if you think about it. (Hint: What does "separability" mean, and how is it relevant?)

Let's say we wanted to output smooth values instead of just 0 or 1. What wouuld you need to change in your evaluation step to get rid of the thresholding? What wouuld you need to change about learning to allow your neuron to learn smooth functions? (Hint: in a smooth output function, we want to change the amount of training we do by how far we were off, not just by which direction we were off.)

''One answer: [https://www.noisebridge.net/wiki/Image:NoisebridgeNeuralNetworks_2009MAR17.pdf PDF of Mathematica workspace]''

What if we wanted to do something besides multiple each input by its weight? What if we wanted to do something crazy, like take the second input, square it, and multiply _that_ by the weight? That is: what if we wanted to make the output a polynomial equation instead of a linear one, where each input is x^1, x^2, etc, with the weights as their coefficients? What would need to change in your implementation? What if we wanted to do even crazier things, like bizarre trig functions?