void setup() {

Serial.begin(9600);
}

void loop() {

int potensio = analogRead(A0);
float voltage = potensio * (5.0/1023.0);
int outputValue = map(potensio,0,1023,0,255);

  Serial.print("Tegangan = ");
  Serial.print(voltage);
  Serial.print("\t potensio = ");
  Serial.print(potensio);
  Serial.print("\t output = ");
  Serial.println(outputValue);
  delay(3000);

}