#define pinPotensio 2
int dataPotensio=0;
int vol;

void setup() {
   Serial.begin(9600);
}

void loop() {
  vol=map(dataPotensio,0,1023,0,255);
  dataPotensio = analogRead(pinPotensio);
  Serial.print("Potensio :");
  Serial.println(dataPotensio);
  delay(1000);
}