While newer Arduinos and Arduino compatibles (including the Hackaday.io Trinket Pro. Superliminal Advertising!) either have a chip capable of USB or rely on a V-USB implementation, the old fogies o… ...

Note: Relay and relay setup is only displayed partially. I've used an external 12v Power Supply and some PC fans. This software, combined with the hardware is able to boost your heating produced by a ...