const int ldrPin = A0;  // Analog pin for LDR
const int ledPin = 4;  // Digital pin for LED

void setup() {
  pinMode(ledPin, OUTPUT);  // Set the LED pin as an output
  Serial.begin(9600);       // Optional: If you want to monitor LDR values in the Serial Monitor
}

void loop() {
  int ldrValue = analogRead(ldrPin); // Read the LDR value

  Serial.print("LDR Value: ");
  Serial.println(ldrValue); // Optional: Print the LDR value to the Serial Monitor

  if (ldrValue < 300) {
    digitalWrite(ledPin, HIGH);  // Turn on the LED
  } else {
    digitalWrite(ledPin, LOW);   // Turn off the LED
  }

  delay(500);  // Optional: Add a delay to make the changes visible
}