const int lampuMerahPin = 2;   // Pin untuk lampu merah
const int lampuKuningPin = 3;  // Pin untuk lampu kuning

unsigned long previousMillisMerah = 0;
unsigned long previousMillisKuning = 0;
const long intervalMerah = 5000;    // Interval waktu untuk lampu merah (5 detik)
const long intervalKuningOn = 5000; // Waktu menyala lampu kuning (5 detik)
const long intervalKuningOff = 10000; // Waktu mati lampu kuning (10 detik)

int lampuMerahState = LOW;
int lampuKuningState = LOW;

void setup() {
  pinMode(lampuMerahPin, OUTPUT);
  pinMode(lampuKuningPin, OUTPUT);
}

void loop() {
  unsigned long currentMillis = millis();

  // Kontrol lampu merah
  if (currentMillis - previousMillisMerah >= intervalMerah) {
    previousMillisMerah = currentMillis;
    if (lampuMerahState == LOW) {
      lampuMerahState = HIGH;
    } else {
      lampuMerahState = LOW;
    }
    digitalWrite(lampuMerahPin, lampuMerahState);
  }

  // Kontrol lampu kuning
  if (currentMillis - previousMillisKuning >= intervalKuningOn) {
    if (currentMillis - previousMillisKuning >= intervalKuningOn + intervalKuningOff) {
      previousMillisKuning = currentMillis;
    }
    else {
      previousMillisKuning = currentMillis;
      if (lampuKuningState == LOW) {
        lampuKuningState = HIGH;
      } else {
        lampuKuningState = LOW;
      }
      digitalWrite(lampuKuningPin, lampuKuningState);
    }
  }
}