RGB Led Fader

• (1) 10mm Common Cathode RGB LED
• (3) 270 Ω Resistor (red, purple, brown stripes)
• (3) Push buttons
• (1) Half-size breadboard
• (1) Arduino Uno R3
• Jumper wires

int redLEDPin = 11;

int greenLEDPin = 10;

int blueLEDPin = 9;

int redSwitchPin = 7;

int greenSwitchPin = 6;

int blueSwitchPin = 5;

int red = 0;

int blue = 0;

int green = 0;

void setup()

{

  pinMode(redLEDPin, OUTPUT);

  pinMode(greenLEDPin, OUTPUT);

  pinMode(blueLEDPin, OUTPUT);  

  pinMode(redSwitchPin, INPUT_PULLUP);

  pinMode(greenSwitchPin, INPUT_PULLUP);

  pinMode(blueSwitchPin, INPUT_PULLUP);

}

void loop()

{

  if (digitalRead(redSwitchPin) == LOW)

  {

    red ++;

    if (red > 255) red = 0;

  }

  if (digitalRead(greenSwitchPin) == LOW)

  {

    green ++;

    if (green > 255) green = 0;

  }

  if (digitalRead(blueSwitchPin) == LOW)

  {

    blue ++;

    if (blue > 255) blue = 0;

  }

  analogWrite(redLEDPin, red);

  analogWrite(greenLEDPin, green);

  analogWrite(blueLEDPin, blue);  

  delay(10);

}