Software people generally envision GitHub as an easy-to-access storage facility for holding source code. It’s not entirely obvious, to the casual observer, that there are all kinds of projects on GitHub.

Today, we’ll look at a few of the GitHub repositories that relate to 3D printing, microcontrollers, mechanisms, parts, tools and CAD. I’ll note the positives and challenges that you might look at to optimize your own GitHub project collections.

While the official Arduino repos contain mostly code, other pages highlight actual projects with hardware, tips and tricks, one-off libraries, ESP8266/ESP32 topics (34250 repos) and so on.

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