Got going on my side. The last few days I have laid out the wiring and components on a piece of MDF. Plan is to wire it all up and test it then figure out what size box is needed.

Started testing today, after a bit of probing with the multimeter and oscilloscope I have managed to get relays clicking, e-stops working and motors turning. Next stage is to tune the motors to the machine.

I have to say, that I would not recommend the CNC-Technics Break out board. The board itself might be fine, but the documentation is atrocious. I am fortunate that I have background in electrics/electronics and industrial control plus some experience with Mach 3, because a new comer would really struggle with it. However you live and learn, and next time I know what to look out for.

I'll post some pics up of the prototype cabinet tomorrow.