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 ...

This new carrier board adds the ability to connect, monitor, control, and automate the large number of existing devices that were previously beyond the Pi’s built-in 3.3 VDC GPIO sensing and control ...