Recommendations for mid-range stepper driver?

[Neale]

This project will have a moving table with maybe 150x150mm movement, XY only (no Z). I doubt if there will be a lot of mass in it, and movement will be slow and in very small steps. I can't help feeling that the AM882 class of driver is a bit OTT!

I've had a poke around in the grbl code and it does look very interesting.

[IanS1]

Yes of course, the AM882 is probably overkill. But something like the CW5045 from CNC4YOU should work just as good.
http://www.cnc4you.co.uk/Stepper-Mot...tepping-CW5045
.
Until you have an idea of whether a pretty much maxed out NEMA17 at around 1.7amps/0.44Nm will work for your application or move up to NEMA23 it's difficult to recommend a drive. If you go for something like the CW5045 you will at least have a little scope on the motor choice. If the NEMA17 will suit, running them from a gShield on the UNO should be more than adequate.

[IanS1]

Perhaps it might be worth considering upgrading the M752 now and using those drives.