For example, it didn’t seem to have PID control at all ... controls the power for the heater. Now he just needed a PID library — readily available from Arduino.cc of course.

[Gonzho] has been busy the last few years working on his own Arduino Powered Open Source heat pump controller ... needed to run the compressor pump and control gear is usually electrically ...

Now, with this tiny board, you can bring heat vision into any of your Arduino/Raspberry Pi DIY projects. At $350, it’s one of the more expensive Arduino accessories you can buy. Relative to the ...