#define PIR_SENSOR_PIN 15  // Pin connected to the PIR sensor output
#define BUZZER_PIN 5       // Pin connected to the buzzer

void setup() {
  // Initialize serial communication for debugging
  Serial.begin(115200);

  // Set up PIR sensor as input
  pinMode(PIR_SENSOR_PIN, INPUT);

  // Set up buzzer as output
  pinMode(BUZZER_PIN, OUTPUT);

  // Start with the buzzer off
  digitalWrite(BUZZER_PIN, LOW);

  Serial.println("PIR Motion Detection System Initialized");
}

void loop() {
  // Read the PIR sensor's output
  int motionDetected = digitalRead(PIR_SENSOR_PIN);

  if (motionDetected == HIGH) {
    // If motion is detected, activate the buzzer
    Serial.println("Motion detected!");
    digitalWrite(BUZZER_PIN, HIGH);  // Turn buzzer on
    delay(1000);                     // Keep the buzzer on for 1 second
    digitalWrite(BUZZER_PIN, LOW);   // Turn buzzer off
  } else {
    // If no motion, keep buzzer off
    digitalWrite(BUZZER_PIN, LOW);
  }

  delay(200);  // Small delay to debounce the sensor
}