const int pirPin = 15;  // Pin connected to PIR sensor
const int ledPin = 16;  // Pin connected to LED

void setup() {
  pinMode(pirPin, INPUT);   // Set PIR pin as input
  pinMode(ledPin, OUTPUT);  // Set LED pin as output
  Serial.begin(9600);       // Start serial communication
  digitalWrite(ledPin, LOW); // Ensure LED is off at the beginning
}

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

  if (pirState == HIGH) {
    // Motion detected, turn on LED
    Serial.println("Motion Detected! Turning ON LED");
    digitalWrite(ledPin, HIGH);  // Turn ON LED
    delay(2000);  // Keep LED on for 2 seconds
    digitalWrite(ledPin, LOW);   // Turn OFF LED after 2 seconds
  } else {
    // No motion detected
    Serial.println("No motion detected");
  }

  delay(500);  // Delay to prevent serial flooding
}