// Define the pins
const int ledPin = 9; // LED connected to digital pin 9
const int ldrPin = A0; // LDR connected to analog pin A0

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

void loop() {
  int ldrValue = analogRead(ldrPin); // Read the LDR value (0-1023)

  // Map the LDR value (0-1023) to the LED brightness (0-255)
  int brightness = map(ldrValue, 0, 1023, 0, 255);
  
  analogWrite(ledPin, brightness); // Set the LED brightness

  Serial.print("LDR Value: ");
  Serial.print(ldrValue);
  Serial.print("   Brightness: ");
  Serial.println(brightness);

  delay(100); // Delay for stability
}