int ledMerah = 2;
int ledKuning =3;
int ledHijau =4;

void setup(  ){
  pinMode(ledMerah, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledHijau, OUTPUT);

}

void loop(){
  digitalWrite(ledMerah,HIGH);
  delay(5000);
  digitalWrite(ledMerah, LOW);
  digitalWrite(ledKuning, HIGH);
  delay(500);
  digitalWrite(ledKuning,LOW);
  digitalWrite(ledHijau,HIGH);
  delay(3000);
  digitalWrite(ledHijau, LOW);
  digitalWrite(ledKuning, HIGH);
  delay(250);
  digitalWrite(ledKuning,LOW);

}