/*
control led brightness
 */

#define POTENTIOMETER_PIN 35 //ESP32 pin connected to pontentiometer pin 
#define BUZZER_PIN        21 //ESP32 pin connected to BUZZER pin
#define ANALOG_THRESHOLD   1000

void setup() {
  pinMode(BUZZER_PIN, OUTPUT); //set ESP32 pin to output mode
}

void loop() {
  int analogvalue = analogRead(POTENTIOMETER_PIN); //read the input on analog pin

  if (analogvalue > ANALOG_THRESHOLD)
    digitalWrite(BUZZER_PIN, HIGH); //turn on piezo Buzzer
    else
    digitalWrite(BUZZER_PIN, LOW); //turn off piezo BUzzer
}