Raspberry Pi makes some incredibly versatile little computers. They have become very popular among makers and DIY enthusiasts for their small size, their affordability, their relatively impressive ...
Recently, [Edward Schmitz] wrote in to let us know about his Hackaday.io project: SigCore UC: An Open-Source Universal I/O Controller With Relays, Analog I/O, and Modbus for the Raspberry Pi. In the ...