A simple RGB LED lamp for illuminating a keyboard tray.
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Each press of the button cycles the LED colors. It turns off after red.
Just wire it up and upload the following code.
int redPin = 3; int greenPin = 5; int bluePin = 6; int buttonPin = 2; int initialCount = 0; //uncomment this line if using a Common Anode LED #define COMMON_ANODE void setup() { pinMode(redPin, OUTPUT); pinMode(greenPin, OUTPUT); pinMode(bluePin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); setColor(0,0,0); } void loop() { int buttonState = digitalRead(buttonPin); if ( buttonState == LOW ){ delay(500); //delay for debounce initialCount++; if (initialCount > 4 ){ initialCount = 0; } switch (initialCount){ case 0: setColor(0,0,0); break; case 1: setColor(0, 255, 0); // green break; case 2: setColor(0, 255, 255); // aqua break; case 3: setColor(0, 0, 255); // blue break; case 4: setColor(255, 0, 0); // red break; } } } void setColor(int red, int green, int blue) { #ifdef COMMON_ANODE red = 255 - red; green = 255 - green; blue = 255 - blue; #endif analogWrite(redPin, red); analogWrite(greenPin, green); analogWrite(bluePin, blue); }
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Grégory Paul
Martin
Sebastian Jimenez
Alex
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