//Send the temperature over Serial

//define the pin constants
int ledPin = 22;
int button = 23;
int relay = 24;
int temp = 0;

//define button state booleans
boolean changed;
boolean oldState;

void setup(){
  
 //set analog reference to external
analogReference(EXTERNAL);
 
  
  //set the led pin to output
  pinMode(ledPin, OUTPUT);
  
  //set the button to input
  pinMode(button, INPUT);
  
  //set the relay to output
  pinMode(relay, OUTPUT);
  
  //set the temperature sensor to input
  pinMode(temp,INPUT);
  
  //Initilize serial communication
  Serial.begin(57600);
  
}

void loop(){
  
  //read and store the button state
  boolean State =  digitalRead(button);
   
  //set the led to the button state
  digitalWrite(ledPin,State);
  
  //set the relay to the button state
  digitalWrite(relay,State);
  
  //read the temperature sensor
  int tempRead = analogRead(temp);
  
  //convert to a voltage
  double tempVolt = tempRead*5./1024.;
  
  //convert to degrees Celsius
  double temperature = (tempVolt-.5)*100.;
  
  //Print the temperature over serial
  Serial.println(temperature);
  
}