int potPin = 34;
int potValue = 0;
float voltage = 0;

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

void loop() {
  potValue = analogRead(potPin);

  // For ESP32, ADC is 12-bit (0–4095)
  voltage = potValue * (3.3 / 4095.0);

  Serial.print("POT Value: ");
  Serial.print(potValue);
  Serial.print("   Voltage: ");
  Serial.print(voltage, 2);
  Serial.println(" V");

  delay(500);
}