const int LDR_PIN = A0; // LDR pin
const int LED_PIN = 9;  // LED pin
int lightThreshold = 500; // Light intensity threshold

void setup() {
  pinMode(LED_PIN, OUTPUT); // Set LED as output
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  int lightValue = analogRead(LDR_PIN); // Read LDR value
  Serial.print("Light Value: "); 
  Serial.println(lightValue); // Print light value to Serial Monitor

  if (lightValue < lightThreshold) {
    digitalWrite(LED_PIN, HIGH); // Turn on LED if light is low
  } else {
    digitalWrite(LED_PIN, LOW);  // Turn off LED if light is high
  }

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