int led_pin = 11;
int ldr_pin = A2;

void setup() {
  pinMode(led_pin, OUTPUT);
  pinMode(ldr_pin, INPUT);
  Serial.begin(9600);
}

void loop() {
  int ldr_value = analogRead(ldr_pin);
  Serial.print("LDR Sensor Value: ");
  Serial.println(ldr_value);
  
  float voltage = ldr_value * (5.0 / 1024.0);  
  Serial.print("Voltage: ");
  Serial.println(voltage, 2);  
  
  // Convert LDR reading (0-1023) to PWM value (0-255)
  int pwm_value = map(ldr_value, 0, 1023, 0, 255);
  
  analogWrite(led_pin, pwm_value);
  
  delay(500);
}