#define ledMerah 19
#define ledKuning 18
#define ledHijau 5
#define button 15

void setup() {
  pinMode(ledMerah, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledHijau, OUTPUT);
}

void loop() {

  if (digitalRead(button)==HIGH)
  {
    digitalWrite(ledKuning,HIGH);
    delay(3000);
  
    digitalWrite(ledKuning,LOW);
    digitalWrite(ledMerah,HIGH);
    delay(5000);

    digitalWrite(ledMerah,LOW);
    digitalWrite(ledKuning,HIGH);
    delay(2000);

    digitalWrite(ledMerah, LOW);
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledHijau,HIGH);
    delay(3000);

    digitalWrite(ledMerah, LOW);
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledHijau,LOW);

  } 
}