// Define the pins for the RGB LED
const int redPin = 11;
const int greenPin = 10;
const int bluePin = 9;

// Define the delay between colour changes

const int delayTime = 1000;

void setup() {

  // Set the RGB LED pins as outputs

  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);

}

void loop() {

  // Set the RGB LED to red
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);

  // Wait for a short period of time

  delay(delayTime); 

  //Yellow

  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, LOW);

  //Wait

  delay(delayTime); 

  // Set the RGB LED to green

  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, LOW);

  // Wait for a short period of time

  delay(delayTime);

  //Aqua

  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, HIGH);

  //Wait

  delay(delayTime);

  // Set the RGB LED to blue

  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, HIGH);
 
  // Wait for a short period of time

  delay(delayTime);

  //Purple

  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, HIGH);

  //Wait

  delay(delayTime);

}