#define ledMerah 13
#define ledKuning 12
#define ledHijau 14
#define tombol 2

void setup() {

  pinMode(ledMerah, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledHijau, OUTPUT);
  pinMode(tombol, INPUT);
}

void loop() {


  if (digitalRead(tombol) == HIGH)
  {
    digitalWrite(ledMerah, LOW);
    delay(500);
    digitalWrite(ledMerah, HIGH);
    delay(500);
    digitalWrite(ledKuning, HIGH);
    delay(500);
    digitalWrite(ledHijau, HIGH);
    delay(500);
    digitalWrite(ledMerah, LOW);
    delay(500);
    digitalWrite(ledKuning, LOW);
    delay(500);
    digitalWrite(ledHijau, LOW);
    delay(500);
    digitalWrite(ledHijau, LOW);
  }
}