Hi, I'm new to this stuff and I need some help on the electronic side of things. I was to design a small/medium CNC router using some HobbyCNC 205 or 305oz stepper motors. I would like to use open source component as much as possible and I'm planning on using EMC2.

I've been looking on http://www.pminmo.com but I'm not sure what exactly I would need for such a system... so if I understand correctly I need an interface board and then stepper drivers for each stepper motor and a power supply.

What I'm really not sure how it works is how all those components connect together... I was looking at the 4 axis opto isolated interface but how does it connect to the stepper drivers? Where do all those x1-*, x3-*, etc connections go to?

Anybody got some good links or info on how all this connects together? I know I could just buy the HobbyCNC controller and be done with it but I prefer to do it myself and learn some new things along the way.

Any help would be appreciated!

TIA!