const int ldrPin = A0;
const int ledPin = 9;

int lightValue = 0;

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);

  Serial.println("LDR Smart Light System Started...");
}

void loop() {
  lightValue = analogRead(ldrPin);

  Serial.print("Light Intensity: ");
  Serial.println(lightValue);

  if (lightValue < 600) {
    digitalWrite(ledPin, HIGH);
    Serial.println("Dark detected → LED ON");
  } 
  else {
    digitalWrite(ledPin, LOW);
    Serial.println("Bright detected → LED OFF");
  }

  delay(500);
}