I'm kind of a nerd and have lot's of fun with 3D Stuff ( Blender, FreeCAD, 3D Printing ), microcontrollers ( Arduino, ESP, STM-32, see https://gitlab.com/lnetwalker ), my openMSR project ( www.openmsr.org ), tinkering and embedded Linux.
For an overview look here: https://eilers.net/index.php/projekte
All I do in my spare time is released to the public under open source licenses because I strongly believe that it's a way to make our world a little better.
Thanks for any coffee you buy me, much appreciated ;)
Cheers from Lake of Constance; Germany