Before the Raspberry Pi came out, one cheap and easy way to get GPIO on a computer with a real operating system was to ...

Recently, [Edward Schmitz] wrote in to let us know about his Hackaday.io project: SigCore UC: An Open-Source Universal I/O ...

The Waveshare Relay Board is a card that can be installed on top of the Raspberry Pi. It offers three relays. This project delivers a script to control the relays from the command line via GPIO. The ...

Relay: https://www.amazon.com/gp/product/B0BJBDWMM2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Raspberry PI Power: https://www.amazon.com/dp/B01MEF293V?psc=1&ref ...