Just dinnae go near TB6560 based drivers, they are a short route to frustration.

Have just blown second 6560 in less than a month, guessing its actually back emf that kills them, this one was Y axis driver after fine engraving, lot of Y back and forth think the driver either thermally cooks or direction change kills the output devices.

Most expensive is having a piece of equipment sitting idle waiting for parts.

Personally thinking either 542 or Gecko boards to replace the fragile 6560s...

http://www.charter-controls.com/inde...b_y=0&offset=5

4X4 is actually a large table and cost of motors and drives will be a small part.

Cheers
Adam