const int redLedPin = 2;   // Pin untuk lampu merah
const int yellowLedPin = 3;  // Pin untuk lampu kuning

unsigned long previousMillisRed = 0;
unsigned long previousMillisYellow = 0;
const long intervalRed = 3000;    
const long intervalYellow = 5000;
const long intervalYellowOff = 8000;

bool redLedState = LOW;
bool yellowLedState = LOW;

void setup() {
  pinMode(redLedPin, OUTPUT);
  pinMode(yellowLedPin, OUTPUT);
}

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

  //for control red LED
  if (currentMillis - previousMillisRed >= intervalRed) {
    redLedState = !redLedState;
    digitalWrite(redLedPin, redLedState);
    previousMillisRed = currentMillis;
  }

  // Kontrol lampu kuning
  int setInterval = (yellowLedState == LOW) ? intervalYellowOff : intervalYellow;

  if(currentMillis - previousMillisYellow >= setInterval) {
    yellowLedState = !yellowLedState;
    digitalWrite(yellowLedPin, yellowLedState);
    previousMillisYellow = currentMillis;
  }
}