int pirPin = 6; 
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(pirPin, INPUT); // Matikan buzzer pada awalnya
}

void loop() {
  // put your main code here, to run repeatedly:
  int motionDetected = digitalRead(pirPin); // Baca status sensor PIR
  Serial.println(motionDetected);

  if (motionDetected == HIGH) {
    // Sensor PIR mendeteksi gerakan, aktifkan buzzer
    Serial.println("Tamu masuk!");
  }
}