const byte pinTombol = 2;
boolean kondisiTombol = 0;
unsigned int  nomorAntrian = 0;
boolean flag = false;

const byte led[] = {3,4,5,6,7,8};

void setup() {
  Serial.begin(9600);
  pinMode(pinTombol, INPUT);

  for(int pin = 0; pin <= 5; pin++ ){
    pinMode(led[pin], OUTPUT);
  }

}

void loop() {
  kondisiTombol = digitalRead(pinTombol);
  //Serial.println(kondisiTombol);

  if( (kondisiTombol) && (!flag) ){
    Serial.println(nomorAntrian);
    digitalWrite(led[nomorAntrian], HIGH);
    nomorAntrian++;
    if(nomorAntrian >= 7){
      nomorAntrian = 0;
      for(int pin = 0; pin <= 5; pin++ ){
        digitalWrite(led[pin], LOW);
      }
    }
    flag = true;
  }

  else if(!kondisiTombol){
    flag = false;
  }

  delay(50);
}