Quote Originally Posted by John S View Post
Rob,
The guy was able to invert the signal and get the driver working. Works OK but a lot of noise from the driver, very much like the cheap 3 axis board I have in my small engraver.
Been running the application using this single axis TB driver, one of Roy's System3 drivers and a 542 driver.
No contest, the 542 is head and shoulders above the other two

Thats because the m542 has proper sinusoidal current control and not a chopper controller, the result being less harmonics and less noise (mechanical and electrical). I don't know what you pay for them John (probably less than most of us) but at £28-ish each in set of 4 off eBay its only a tenner or less more than the TB solution and well worth that difference...