Climate controller reads temperature and humidity values from SHT11 where are temperature and humidity sensors combined. Temperatures scale reaches from -40 to 123ºC or (-40 to 254ºF) while humidity readings can vary from 0 to 100%.

Controller board can control three distinct CD outputs with 10A load or 2 DC outputs and one AC up to 4A. This project can be ideal for greenhouse control, small room climate control or in other areas where temperature and humidity has to be sustained. Complete project files including C source, hex file, schematic and PCB can be downloaded here.