// Define RGB LED pins
const int redPin = 27;
const int greenPin = 26;
const int bluePin = 25;

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
}

void loop() {
  setColor(255, 0, 0);  // Red
  delay(1000);
  setColor(0, 255, 0);  // Green
  delay(1000);
  setColor(0, 0, 255);  // Blue
  delay(1000);
  setColor(255, 255, 0);  // Yellow
  delay(1000);
  setColor(80, 0, 80);  // Purple
  delay(1000);
  setColor(0, 255, 255);  // Cyan
  delay(1000);
}

void setColor(int red, int green, int blue) {
  // For common-anode RGB LEDs, use 255 minus the color value
  analogWrite(redPin, red);
  analogWrite(greenPin, green);
  analogWrite(bluePin, blue);
}