Vermes
Advanced Member level 4
It is a simple thermostat with shorted output (relay). Range can be selected to the current needs of the room, in this case it was from 16 to 28 degrees Celsius, the pitch of 0,5.
The rotary encoder was used as the control. Highlighting the LCD module was plugged into one of the three PWM outputs of the Atmega so as to allow for adjustment of its brightness. When the thermostat is turned off, the backlight dims and the actual temperature read from the popular DS appears. The board was made by thermal transfer method.
Link to original thread (useful attachment) – Termostat do nagrzewnicy olejowej do warsztatu