const int yllwLED = 3;
const int rdLED = 2;
unsigned long timerdLED = 0;
unsigned long timeyllwLED = 0;
unsigned long currenttime;
const unsigned long intervalrdON = 3000;  
const unsigned long intervalrdOFF = 3000;  
const unsigned long intervalyllwON = 5000; 
const unsigned long intervalyllwOFF = 8000; 

void setup() {
  pinMode(rdLED, OUTPUT);
  pinMode(yllwLED, OUTPUT);
}

void loop() {
  currenttime = millis();

  // Kendalikan LED merah
  if (currenttime - timerdLED <= intervalrdON) {
    digitalWrite(rdLED, HIGH); 
  } else if (currenttime - timerdLED <= intervalrdON + intervalrdOFF) {
    digitalWrite(rdLED, LOW); 
  } else {
    timerdLED = currenttime;
  }

  // Kendalikan LED kuning
  if (currenttime - timeyllwLED <= intervalyllwON) {
    digitalWrite(yllwLED, HIGH); 
  } else if (currenttime - timeyllwLED <= intervalyllwON + intervalyllwOFF) {
    digitalWrite(yllwLED, LOW); 
  } else {
    timeyllwLED = currenttime; 
  }
}