// Pin definitions
const int pirPin = 8; // PIR sensor output pin
const int ledPin = 9; // LED pin

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

void loop() {
  int motionState = digitalRead(pirPin); // Read the state of PIR sensor
  
  if (motionState == HIGH) { // If motion is detected
    digitalWrite(ledPin, HIGH); // Turn on the LED
    Serial.println("Motion detected!");
    delay(1000); // Delay for stability (optional)
  } else { // If no motion is detected
    digitalWrite(ledPin, LOW); // Turn off the LED
    Serial.println("No motion detected");
    delay(500); // Delay for stability (optional)
  }
}