int mypin = A2;
int readvalue=0;
float volts=0;
int wait=000;

void setup() {
  // put your setup code here, to run once:
//pinMode(mypin, INPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
readvalue=analogRead(mypin);
volts=(5.0/1023.0)*readvalue;
Serial.println(volts);
delay(wait);
}