Hi,
I am have a terrible time with lost steps. My Machine has been working perfectly for a long time now. But out of the blue - lost steps.
I have been chasing my tail for over a week with little joy until now. I have checked everything printer ports, power supplies, mechanicals, static electricity,wiring, software, gcode - all ok!
The one thing I have changed prior to the problem becoming evident was : I upgraded from mach3 version2.63 to version R3.042.020.
This appears to have caused the missed steps.
I have reverted to R2.63 - no more missed steps!
Still testing!
Hope this helps. Or maybe its muddled things up. but I has fixed my problem.
Cheers
Bruce