const int sensorPin = 34;
const int ledMerah = 26;
const int batasMinimal = 50;

void setup() {
  Serial.begin(115200);

  pinMode(sensorPin, INPUT);
  ledcAttach(ledMerah, 5000, 8);
  analogReadResolution(12);
}

void loop() {

  long total = 0;

  for (int i = 0; i < 20; i++) {
    total += analogRead(sensorPin);
    delay(2);
  }

  int nilaiSuara = total / 20;

  Serial.print("Nilai sensor: ");
  Serial.println(nilaiSuara);

  
  if (nilaiSuara < batasMinimal) {

    ledcWrite(ledMerah, 0);

  } 
  else {

    int brightness = map(
      nilaiSuara,
      50,
      4095,
      10,
      255
    );

    brightness = constrain(brightness, 0, 255);

    ledcWrite(ledMerah, brightness);

    Serial.print("Kecerahan LED: ");
    Serial.println(brightness);
  }

  delay(50);
}