To save everyone finding the relevant thread:
http://www.cnczone.com/forums/gecko_...215_drive.html

Interesting that he makes using an FPGA sound like it's something special/unique to use, or at least that's how it reads to me. PM752, and no doubt many others in the range, also use FPGAs as it's just easier. I'd use one if I thought I had a chance of soldering BGA's!

The original comparison was 540 vs 2M880N - there the latter surely wins due to the better control algorithm and ratings. 2M880N vs 203V is less clear cut ... until I see a fair test done between the two I would go for the 2M880N as it seems to still have the better control algorithm, and it's cheaper? (Correct me if I'm wrong, not sure how much the 203V is?). I'd happily do the comparison properly, i.e. at different feedrates and accelaration with a few different motors plus record waveforms with oscilloscope, but currently I own neither drive.

Quote Originally Posted by JAZZCNC View Post
Yes maybe you should have because I have 3 PM752's sat on a shelf
Are they for sale :naughty:?