#define POTENTIOMETER_PIN 36 // ESP32 pin GPIO36 (ADC0) connected to Potentiometer pin
#define LED_PIN           21 // ESP32 pin GPIO21 connected to LED's pin
#define ANALOG_THRESHOLD  2000

void setup() {
  pinMode(LED_PIN, OUTPUT); // set ESP32 pin to output mode
  Serial.begin(115200); // initialize serial communication at 115200 baud rate
}

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

  Serial.print("Analog Value: "); // print the analog value to the Serial Monitor
  Serial.println(analogValue);

  if (analogValue > ANALOG_THRESHOLD)
    digitalWrite(LED_PIN, HIGH); // turn on LED
  else
    digitalWrite(LED_PIN, LOW);  // turn off LED

  delay(100); // add a small delay to make the serial output more readable
}