int ldrPin = A0; 
int ledPin = 9;
int ldrValue = 0;

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

void loop() {
  ldrValue = analogRead(ldrPin);
  Serial.print("Nilai Sensor: ");
  Serial.println(ldrValue);

  int ledBrightness = map(ldrValue, 0, 1023, 255, 0); 
  
  ledBrightness = constrain(ledBrightness, 0, 255);

  analogWrite(ledPin, ledBrightness);
  
  delay(200);
}