int hitung;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(5,INPUT);
  pinMode(23, OUTPUT);
  pinMode(22, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(19, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int nilai = digitalRead(5);

  if (nilai == 1){
    hitung++;

    Serial.println(hitung);
    if (hitung==1){
      digitalWrite(23, HIGH);
      digitalWrite(22, LOW);
      digitalWrite(21, LOW);
      digitalWrite(19, LOW);
      delay(1000);
    }

    else
    if (hitung==2){
      digitalWrite(23, LOW);
      digitalWrite(22, HIGH);
      digitalWrite(21, LOW);
      digitalWrite(19, LOW);
      delay(1000);
    }

    else
    if (hitung==3) {
      digitalWrite(23, LOW);
      digitalWrite(22, LOW);
      digitalWrite(21, HIGH);
      digitalWrite(19, LOW);
      delay(1000);
    }

    else
    if (hitung==4) {
      digitalWrite(23, LOW);
      digitalWrite(22, LOW);
      digitalWrite(21, LOW);
      digitalWrite(19, HIGH);
      delay(1000);
    }
    else 
    if (hitung==5) {
      digitalWrite(23, LOW);
      digitalWrite(22, LOW);
      digitalWrite(21, LOW);
      digitalWrite(19, LOW);
      hitung = 0;
      delay(1000);
    }
  }
}