This library implement RIMS controls for home brewers. For definition of a RIMS, see https://tinyurl.com/j3lyuyc
For me, an Arduino micro controller + a LCD Keypad shield was cheaper and a lot more customizable than a commercial PID controller. So, with this library, a commercial PID controller is unnecessary. Automatic PID tuning toolkit is also included.
Temperature can be read with a thermistor, a resistance temperature detector (RTD) or any custom temperature probe. Heater is...