Quote Originally Posted by luke11cnc View Post
I think I'm going to buy this set up as it has two extra drivers (spare or extra axis if needed)

http://www.ebay.co.uk/itm/6Axis-CNC-...#ht_3337wt_905

but still unsure if it's the right think to buy

James
Good find - they are the right thing to buy. It would be interesting to compare them to the PM752 - theoretically they should work just the same on 75V, but you never know.

Optoisolated breakout board with drivers that are already isolated can cause problems if you don't wire it right. Don't worry about it though, I'm sure it'll be fine.