Hi Everyone, Ermanno here. 

I'm thrilled to be part of this project with Rüdiger being the scenes. I have contributed to the electronics design and PCB miniaturisation. All things consider, we managed to pack a lot of features in such a small board. Working with Rudi we pushed the concept of doing more with less even further and I think we succeeded. Now working on the test gig for mass production. If you look at the open source files, most of components are either Eagle standard libraries os sourced via SamacSys plugin. refer to the note in the schematics for any component question and feel free to give us a shout.

All the Best,

Ermanno