void setup() {
  pinMode(9, OUTPUT);// LED MERAH
  pinMode(8, OUTPUT);// LED KUNING
  pinMode(7, OUTPUT);// LED HIJAU
}

void loop() {
  digitalWrite(9, HIGH); // Nyalakan LED Merah
  delay(5000); // Tunda 5 Detik
  digitalWrite(9, LOW);// Matikan LED Merah

  digitalWrite(8, HIGH); // Nyakan LED Kuning
  delay(5000); // Tunda 5 detik
  digitalWrite(8, LOW); // Matikan LED Kuning

  digitalWrite(7, HIGH);// Nyalakan LED Hijau
  delay((5000)); // Tunda 5 detik
  digitalWrite(7, LOW);// Matikan LED Hijau
}