RGB_Button_arduino/RGB_Button.ino at master · rubysattar/RGB_Button_arduino · GitHub

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const int buttonPin = 3;
const int redPin = 9;
const int greenPin = 10;
const int bluePin = 11;
int counter = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(buttonPin, INPUT);
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int buttonState;
  buttonState = digitalRead(buttonPin);

  if (buttonState = LOW) {
    counter++;
    delay(250);
  }

  else if (counter == 0) {
    digitalWrite(redPin, LOW);
    digitalWrite(greenPin, LOW);
    digitalWrite(bluePin, LOW);
  }

  else if (counter == 1) {
    digitalWrite(redPin, HIGH);
    digitalWrite(greenPin, LOW);
    digitalWrite(bluePin, LOW);
  }

  else if (counter == 2) {
    digitalWrite(redPin, LOW);
    digitalWrite(greenPin, HIGH);
    digitalWrite(bluePin, LOW);
  }

  else if (counter == 3) {
    digitalWrite(redPin, LOW);
    digitalWrite(greenPin, LOW);
    digitalWrite(bluePin, HIGH);
  }

  else if (counter == 4) {
    digitalWrite(redPin, HIGH);
    digitalWrite(greenPin, LOW);
    digitalWrite(bluePin, HIGH);
  }

  else {
    counter = 0;
  }

}