I just dry-fitted some steppers to a ramps board and connected it to estlcam, flashed the estlcam firmware “einwandfrei” to the ramps board.
Tried a .nc program i earlier did on my mpcnc and the steppers move!
For Christian this won’t be a surprise I think, but I am very pleased. I hope I will be able to change the arduino mega on my mpcnc tonight, so i can try it in real life!
A quick video on my messy workbench 
The contraption is battery fed by a 24V battery.
To be continued