/*Potentiometer is connected 
to GPIO 34 (Analog ADC1_CH6) */
const int potPin = 34;

/*variable for storing the 
potentiometer value*/
int potValue = 0;
int voltage=0;
void setup() {
  Serial.begin(115200);
  delay(1000);
}

void loop() {
  /*Reading potentiometer 
  value*/
  potValue = analogRead(potPin);

  /*5.0 tegangan yang diukur dan
  4096.0 adalah resolusi ADC 12bit sehingga
  1bit=0.01221V*/
  float voltage = potValue * (5.0/4096.0);
  //menampilkan hasil via serial
  Serial.print(" Tegangan=");
  Serial.print(voltage);
  Serial.print("V ");
  Serial.print("Potensio(ADC)=");
  Serial.println(potValue);  
  delay(500);
}