// Pin definitions
int pirPin = 2;  // PIR sensor pin
int ledPin = 8; // LED pin

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

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

  // If motion is detected
  if (pirState == HIGH) {
    // Turn on the LED
    digitalWrite(ledPin, HIGH);
    Serial.println("Motion detected!");
  } else {
    // Turn off the LED
    digitalWrite(ledPin, LOW);
    Serial.println("No motion.");
  }

  // Small delay to avoid rapid toggling
  delay(500);
}