// Initialize the motion sensor and LDR pins
int motionSensor = 2;
//digital pin D2
int ldrSensor = A0;
//analog pin 0

// Initialize the LED pin
int ledPin = 13;
//led pin D13

// Initialize the threshold values
int motionThreshold = 500;
int ldrThreshold = 500;

void setup() {
  // Set the motion sensor pin as an input
  pinMode(motionSensor, INPUT);
  
  // Set the LED pin as an output
  pinMode(ledPin, OUTPUT);
  
  // Serial communication for debugging
  Serial.begin(115200);
}

void loop() {
  // Read the motion sensor value
  int motionValue = digitalRead(motionSensor);
  //read pir from digital pin
  
  // Read the LDR sensor value
  int ldrValue = analogRead(ldrSensor);
  //read the sensor value from analog pin
  
  // output of the sensors
  Serial.print("Motion Value: ");
  //print motion value
  Serial.print(motionValue);
  Serial.println("  ");
  Serial.print("LDR Value: ");
  // print ldr value
  Serial.println(ldrValue);

  // Check if motion is detected or LDR value is below threshold
  if (motionValue == HIGH || ldrValue < ldrThreshold) 
  //condition for motion and ldr
  {
    // Turn on the LED
    digitalWrite(ledPin, HIGH);
    //led HIGH
  } else {
    // Turn off the LED
    digitalWrite(ledPin, LOW);
  }
  
  // Delay to prevent rapid LED toggling
  delay(4000);
}