const int BUZZER_PIN = 13;
const int PIR_PIN = 10;

void setup() {
  // put your setup code here, to run once:
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(PIR_PIN, INPUT);
}

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

  // If intruder detected, sound the buzzer
  if (intruderDetected == HIGH) {
    // tone(SPEAKER_PIN, 1000);
    digitalWrite(BUZZER_PIN, HIGH);
  } else {
    // noTone(SPEAKER_PIN);
    digitalWrite(BUZZER_PIN, LOW);
  }
}