int pirPin = 2; // PIR sensor output pin
int ledPin = 13; // LED pin
int buzzerPin = 12; // Buzzer pin

void setup() {
  pinMode(pirPin, INPUT); // Set PIR sensor pin as input
  pinMode(ledPin, OUTPUT); // Set LED pin as output
  pinMode(buzzerPin, OUTPUT); // Set buzzer pin as output
  Serial.begin(9600); // Initialize serial communication for debugging
}

void loop() {
  int pirState = digitalRead(pirPin); // Read PIR sensor state

  if (pirState == HIGH) {
    digitalWrite(ledPin, HIGH); // Turn on LED
    digitalWrite(buzzerPin, HIGH); // Turn on buzzer
    Serial.println("Motion detected!"); // Print message to serial monitor
  } else {
    digitalWrite(ledPin, LOW); // Turn off LED
    digitalWrite(buzzerPin, LOW); // Turn off buzzer
    Serial.println("No motion."); // Print message to serial monitor
  }

  delay(1000); // Wait for a second before checking again
}