unsigned long intervalMerah=5000; // durasi untuk jeda dalam miliseconds
unsigned long intervalKuningOn=5000;
unsigned long intervalKuningOff=10000;

unsigned long previousMillisMerah=0; // variable untuk temporary milis
unsigned long previousMillisKuning=0;

bool ledStateMerah = 1; // state variable for the LED
bool ledStateKuning = 1;
unsigned long currentMillis;

void setup() {
  // put your setup code here, to run once:
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  // lampu merah
  digitalWrite(2, ledStateMerah);
  // lampu kuning
  digitalWrite(3, ledStateKuning);
}

void loop() {
  // put your main code here, to run repeatedly:
  currentMillis = millis();

  // kontrol lampu merah
  if (currentMillis - previousMillisMerah >= intervalMerah) {
  ledStateMerah = !ledStateMerah; 
  digitalWrite(2, ledStateMerah); 

  previousMillisMerah = currentMillis;
  }

  // Kontrol lampu kuning
  if (ledStateKuning){
    if (currentMillis - previousMillisKuning >= intervalKuningOn) {
      previousMillisKuning = currentMillis;
      ledStateKuning = false;
      digitalWrite(3, LOW); // Matikan lampu kuning
    }
  }else {
    if (currentMillis - previousMillisKuning >= intervalKuningOff) {
      previousMillisKuning = currentMillis;
      ledStateKuning = true;
      digitalWrite(3, HIGH); // Nyalakan lampu kuning
    }
  }
}