RGBLED - Revision history

Thex: added pic

2013-12-24T11:50:15Z

added pic

← Older revision		Revision as of 04:50, 24 December 2013
Line 1:		Line 1:
	5mm water clear LED's with 4 pins.		5mm water clear LED's with 4 pins.

			[[File:RGBLED.jpg\|800px]]

	The 2nd pin (from the left, with the flat spot oriented to the left) is a common cathode ground.		The 2nd pin (from the left, with the flat spot oriented to the left) is a common cathode ground.

Thex: Added starter code

2013-12-24T11:35:37Z

Added starter code

← Older revision		Revision as of 04:35, 24 December 2013
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	Volts: 2.0 0.0 3.2 3.2		Volts: 2.0 0.0 3.2 3.2
	</pre>		</pre>


			== Code ==
			Modified version of "Fade" sample code, to cycle thru fading one at a time, Reg, Green and Blue.

			<pre>
			/*
			RGB Fade

			This example shows how to fade an LED on pin 3, 5 & 6
			using the analogWrite() function.

			This is an extension of "Fade" example code in the public domain.

			This version is provided as-is for whatever purposes -thex

			*/
			int redPin = 3; // PWM out pin for Red
			int greenPin = 6; // PWM out pin for Green
			int bluePin = 5; // PWM out pin for Blue

			float redMax = 0.5;
			float greenMax = 0.8;
			float blueMax = 1.0;


			int activePin; // currently active color
			float activeMax;

			int brightness; // how bright the LED is
			int fadeAmount = 5; // how many points to fade the LED by

			void setup() {
			brightness = int(fadeAmount);
			activePin = redPin;

			// declare output pins to be an output:
			pinMode(redPin, OUTPUT);
			pinMode(greenPin, OUTPUT);
			pinMode(bluePin, OUTPUT);
			}

			void loop() {
			// set the brightness of active color
			analogWrite(activePin, brightness * activeMax);

			// change the brightness for next time through the loop:
			brightness = brightness + fadeAmount;

			if (brightness == 255) {
			// Reverse fade
			fadeAmount = -fadeAmount ;
			}

			if (brightness == 0)
			{
			// Turn off current color, and switch to next
			analogWrite(activePin, 0);
			if (activePin == redPin)
			{
			activePin = greenPin;
			activeMax = greenMax;
			}
			else if (activePin == greenPin)
			{
			activePin = bluePin;
			activeMax = blueMax;
			}
			else
			{
			activePin = redPin;
			activeMax = redMax;
			}

			// Reset for next color
			fadeAmount = -fadeAmount;
			brightness = int(fadeAmount);
			}

			// wait for 30 milliseconds to see the dimming effect
			delay(30);
			}
			</pre>

			[[Category:Fort]]

Thex: added resistor values for 5v

2013-12-24T10:10:21Z

added resistor values for 5v

← Older revision		Revision as of 03:10, 24 December 2013
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	Recommended current limiting of 20ma max is advized, 30ma is the noted max at 1/10th duty cycle at 10khz.		Recommended current limiting of 20ma max is advized, 30ma is the noted max at 1/10th duty cycle at 10khz.

			When driving at 5v, a 150 ohm resistor for Red, and a 100 ohm resistor for each Green and Blue limits current to around 20ma.

	<pre>		<pre>

Thex: Created page with "5mm water clear LED's with 4 pins. The 2nd pin (from the left, with the flat spot oriented to the left) is a common cathode ground. Pin 1 is Red, Pin 3 is Blue, Pin 4 is Gre..."

2013-12-24T10:01:39Z

Created page with "5mm water clear LED's with 4 pins. The 2nd pin (from the left, with the flat spot oriented to the left) is a common cathode ground. Pin 1 is Red, Pin 3 is Blue, Pin 4 is Gre..."

New page

5mm water clear LED's with 4 pins.

The 2nd pin (from the left, with the flat spot oriented to the left) is a common cathode ground.

Pin 1 is Red, Pin 3 is Blue, Pin 4 is Green, on newer versions the Blue and Green maybe switched.

Recommended current limiting of 20ma max is advized, 30ma is the noted max at 1/10th duty cycle at 10khz.

<pre>
1 2 3 4
| | | |
Color: R - B G
Volts: 2.0 0.0 3.2 3.2
</pre>