Moonshine controller

It works on the basis of Arduino. It has two modes: thermal relay and PID controller. In PID mode, the coefficients can be entered manually or auto-tuned. The on and off temperatures for the water valve are set separately. In thermal relay mode: hysteresis, heating power, target temperature. Heating control via a solid-state relay. There is also temperature calibration, and a scale that shows the actual temperature relative to the target.