grbl-Upgrade for Techno Isel Davinci/ISEL EP1090

Hi there,

for quite some time I had an ISEL EP1090/Isel Davinci standing at home, which went unused, due to the propriatary software protocol.
So I decided to upgrade the controlls to grbl, which furthermore also allowed 3D-movement. Originally I wanted to post the whole
process here, but I had some trouble, so you can find some pictures and a small pdf on github:

https://github.com/Sebastian-Schuetz/ISEL-EP1090

which contains further details for the build.

Hopyfully someone finds it usefull.