OpenAstroTech looks like a really fun project to get involved with! They are a community of open-source makers, trying to make astrophotography cheaper and more accessible. There are three projects, shown below. Watch this space 😃 👾 🚀

The OpenAstroTracker (OAT) with OpenAstroGuider (OAG), and OpenAstroMount (OAM)
Some tracked shots using the OpenAstroTech devices with a DSLR camera. Veil Nebula 😍, M32, and Cygnus