I know, my last update was a long, long time ago, in a .... well, yes. But I was occasionally working on this, and was making a few tools too. Made an etching machine, made an order on my HDD, a small cloud with an orange pi. Yeah, I was busy with the project.
At the end, I uploaded the neatly packet stuff to the git (GitLab). The Arduino sources can be found here:
The KiCAD files are here:
And here are the files for the 3D printed parts: