 */
 
 #include <OneWire.h>
-#include <PID_v1.h>
-#include <Thread.h>
-#include <ThreadController.h>
-#include <TimerOne.h>
+#include <PID_v1.h> // https://github.com/br3ttb/Arduino-PID-Library
+#include <Thread.h> // https://github.com/ivanseidel/ArduinoThread
+#include <ThreadController.h> // https://github.com/ivanseidel/ArduinoThread
+#include <TimerOne.h> // https://github.com/PaulStoffregen/TimerOne
 #include <DallasTemperature.h>
 
 #define RELAY_PIN 8   // Connect Digital Pin 8 on Arduino to ? on Relay Module

/* 
 # Temperature
 OneWire DS18S20, DS18B20, DS1822 Temperature Example


#define ERROR_CRC_IS_NOT_VALID -3000
#define ERROR_FAILED_TO_RESET -4000

const unsigned long COOLER = 1; 
const unsigned long HEATER = 0; 
const unsigned long TYPE = COOLER; 
const unsigned long WINDOW_SIZE = 100;
const unsigned long PID_INTERVAL = 60000;

