const int LampuMerah = 13;
const int LampuKuning = 12;
const int LampuHijau = 11;
const int Tombol = 7;

void setup() {
  // put your setup code here, to run once:
  pinMode(Tombol, INPUT);
  pinMode(LampuMerah, OUTPUT);
  pinMode(LampuKuning, OUTPUT);
  pinMode(LampuHijau, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int Button = digitalRead(Tombol);
if (Button==HIGH){
   digitalWrite(LampuKuning, HIGH);
   delay(3000);
   digitalWrite(LampuKuning, LOW);
   digitalWrite(LampuMerah, HIGH);
   delay(5000);
   digitalWrite(LampuKuning, HIGH);
   delay(2000);
   digitalWrite(LampuHijau, HIGH);
   digitalWrite(LampuMerah, LOW);
   digitalWrite(LampuKuning, LOW);
   delay(3000);
   digitalWrite(LampuHijau, LOW);
  }
}