Full Program

//Measure Voltage of Pin for Temperature Sensor July 26 2018

//Pin definitions
  int buttonPin = 6;
  int redLEDPin = 4;
  int greenLEDPin = 2;
  int relayPin = 13;

//Global variables
  int buttonState = 0;

void setup()
{
  //setup serial reading for 9600 bits of data per second between the board and the computer console (this here)
  Serial.begin(9600);
  //Defining the ledpin as pin 8, and making the pin specified an output.  Change 8 to any integer 0-13 for pins 1-13 on the arduino board
  pinMode(buttonPin, INPUT);
  pinMode(redLEDPin, OUTPUT);
  pinMode(greenLEDPin, OUTPUT);
  pinMode(relayPin, OUTPUT);
}
void loop(){
  buttonState = digitalRead(buttonPin);
  int tempAnalog = analogRead(A0);
  float voltage = tempAnalog * (5.0 / 1023.0);
  float temperature = (100 * voltage) - 50;
  int batAnalog = analogRead(A2);
  float vBat = batAnalog * (5.0 / 1023.0);
  int timeMeasurement = 0;
  int programStatus = 0;
  digitalWrite(relayPin, LOW);

  while(buttonState == 0) {
    sensorValue1 = analogRead(A0);
    voltage = sensorValue1 * (5.0 / 1023.0);
    temperature = (100 * voltage) - 50;
    sensorValue2 = analogRead(A2);
    vBat = sensorValue2 * (5.0 / 1023.0);
    Serial.println(temperature);
    Serial.println(vBat);

    buttonState = digitalRead(buttonPin);
    digitalWrite(redLEDPin, HIGH);
    delay(1000);
  }
  digitalWrite(redLEDPin, LOW);
  digitalWrite(greenLEDPin, HIGH);
  digitalWrite(relayPin, HIGH);
  Serial.println();
  Serial.println();
  delay(1000);
  Serial.print("TEMP.");
  Serial.print("\t");
  Serial.print("VOLTS");
  Serial.print("\t");
  Serial.print("TIME");
  Serial.println();
  sensorValue1 = analogRead(A0);
  voltage = sensorValue1 * (5.0 / 1023.0);
  temperature = (100 * voltage) - 50;
  sensorValue2 = analogRead(A2);
  vBat = sensorValue2 * (5.0 / 1023.0);
  Serial.print("Jack");
  Serial.println(vBat);

  while(vBat >= 3.1) {
    sensorValue1 = analogRead(A0);
    voltage = sensorValue1 * (5.0 / 1023.0);
    temperature = (100 * voltage) - 50;
    sensorValue2 = analogRead(A2);
    vBat = sensorValue2 * (5.0 / 1023.0);
    Serial.print(temperature);
    Serial.print("\t");
    Serial.print(vBat);
    Serial.print("\t");
    Serial.print(timeMeasurement);
    timeMeasurement++;
    Serial.println();
    delay(1000);
  }

  digitalWrite(relayPin, LOW);
  digitalWrite(greenLEDPin, HIGH);
  digitalWrite(redLEDPin, HIGH);
  Serial.println();
  Serial.print("-------- Program Finished --------");
  Serial.println();
  Serial.println();

  programStatus = 1;
  while(programStatus == 1) {
    delay(10000);
  }

  }