/*
  PIR + 3 LED kedip + Buzzer tit tit tit
*/

const int pirPin = 4;
const int led1 = 5;
const int led2 = 6;
const int led3 = 7;
const int buzzer = 8;

void setup() {
  pinMode(pirPin, INPUT);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(buzzer, OUTPUT);

  // kondisi awal mati
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  noTone(buzzer);
}

void loop() {
  int pirState = digitalRead(pirPin);

  if (pirState == HIGH) {

    // Ulang 3 kali: LED kedip + buzzer tit
    for (int i = 0; i < 3; i++) {
      // ON
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      tone(buzzer, 1500);
      delay(200);

      // OFF
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
      digitalWrite(led3, LOW);
      noTone(buzzer);
      delay(200);
    }

  } else {
    // Tidak ada gerakan
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    noTone(buzzer);
  }

  delay(300); // jeda agar tidak terlalu cepat mengulang
}