#define LDR_PIN A0       
#define LED_PIN 9        

void setup() {
  pinMode(LED_PIN, OUTPUT); 
   Serial.begin(115200);     
}

void loop() {
  int ldrValue = analogRead(LDR_PIN);  // Read the value from the LDR
  int ledBrightness;
  

  
  if (ldrValue < 200) {
    ledBrightness = 255;  
  } else if (ldrValue < 400) {
    ledBrightness = 200;  
  } else if (ldrValue < 600) {
    ledBrightness = 150; 
  } else if (ldrValue < 800) {
    ledBrightness = 100;  
  } else {
    ledBrightness = 50;   
  }

  analogWrite(LED_PIN, ledBrightness); 

  // Debugging output
  Serial.print("LDR Value: ");
  Serial.print(ldrValue);
  Serial.print(" | LED Brightness: ");
  Serial.println(ledBrightness);

  delay(500);  
}