New Project - Temperature Control (ST7735 TFT Display + Arduino + PT1000 ) Hi @ll, I have started a new poject....... A friend ask me  to build him a temperature control unit for his home brew beer production. :-) This control unit should be able to hold the temperature of a fluid on a defined temperature level and control the heating of the fluid tank. The heating element of the tank has a power of 1800W. To control it, I...