int tombol = 2;
int jumlahTekan;
int led_merah = 5;
int led_kuning = 4;
int led_hijau = 3;

void setup() {
  // put your setup code here, to run once:
  pinMode(tombol, INPUT);
  pinMode(led_merah, OUTPUT);
  pinMode(led_kuning, OUTPUT);
  pinMode(led_hijau, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int tombolStatus = digitalRead(tombol); 

  if(tombolStatus==HIGH){ 
    jumlahTekan ++;
    delay(300); //agar tidak terjadi tekanan dua kali
    if(jumlahTekan==1){
      digitalWrite(led_hijau, HIGH);
    }
    else if(jumlahTekan==2){
      digitalWrite(led_kuning, HIGH);
    }
    else if(jumlahTekan==3){
      digitalWrite(led_merah, HIGH);
    }
    else if(jumlahTekan==4){
      int i = 0;
      do{
        digitalWrite(led_hijau, LOW);
        digitalWrite(led_kuning, LOW);
        digitalWrite(led_merah, LOW);
        delay(155);
        digitalWrite(led_hijau, HIGH);
        digitalWrite(led_kuning, HIGH);
        digitalWrite(led_merah, HIGH);
        delay(155);
        i++;
      } while (i < 3);

      digitalWrite(led_hijau, LOW);
      digitalWrite(led_kuning, LOW);
      digitalWrite(led_merah, LOW);
      jumlahTekan=0;
    }
  }

}