int myVoltPin=A2;
int readVal;
float V2;
int delayT=500;

void setup() {
  // put your setup code here, to run once:
// Here we will learn about potentiometer
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
readVal=analogRead(myVoltPin);
V2=(5./1023.)*readVal;
Serial.println(V2);
delay(delayT);
}