const int ledMerah = 8;

const int ledKuning = 9;

const int ledHijau = 10;

const int tombol = 7;

void setup() {

  pinMode(ledMerah, OUTPUT);

  pinMode(ledKuning, OUTPUT);

  pinMode(ledHijau, OUTPUT);

  pinMode(tombol, INPUT);

}

void loop() {

  if (digitalRead(tombol) == HIGH) {

    // Menyalakan LED hijau selama 5 detik

    digitalWrite(ledHijau, HIGH);

    delay(1000);

    digitalWrite(ledHijau, LOW);

    // Menyalakan LED kuning selama 2 detik

    digitalWrite(ledKuning, HIGH);

    delay(1000);

    digitalWrite(ledKuning, LOW);

    // Menyalakan LED merah selama 5 detik

    digitalWrite(ledMerah, HIGH);

    delay(1000);

    digitalWrite(ledMerah, LOW);

  }

}