const int PIR_PIN = 27;   // PIR sensor pin (digital pin 2)
const int LED_PIN = 0;  // LED pin (digital pin 0)

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW);  // Turn off LED initially
  Serial.begin(9600);
}

void loop() {
  if (digitalRead(PIR_PIN)) {  // PIR sensor detects motion
    digitalWrite(LED_PIN, HIGH);  // Turn on the LED
    Serial.println("Motion detected!");
    delay(1000);  // LED remains on for 1 second
    digitalWrite(LED_PIN, LOW);  // Turn off the LED
  }
  delay(1000);  // Wait between readings
}