const int ledPin = 13;  // LED connected to digital pin 13
const int ldrPin = A0;  // LDR connected to analog pin A0
const int pirPin = 2;   // PIR sensor connected to digital pin 2

void setup() {
  pinMode(ledPin, OUTPUT);  // Set the LED pin as an output
  pinMode(pirPin, INPUT);   // Set the PIR sensor pin as an input
}

void loop() {
  // Read the state of the LDR (A0) and PIR sensor (2)
  int ldrValue = analogRead(ldrPin);
  int pirValue = digitalRead(pirPin);

  // Check if A0 is low (below a threshold) and pin 2 is high
  if (ldrValue < 500 && pirValue == HIGH) {
    digitalWrite(ledPin, HIGH); // Turn on the LED
  } else {
    digitalWrite(ledPin, LOW);  // Turn off the LED
  }
}