Mach3 stepper motor problem

Had a problem after testing mach3 for the first time, could not get the stepper motors to move as expected. Only stuttering av vibrating unevenly, did an extensive google search round but I did find any solution for my problem.

I did everything like, switching from WinXP ACPI to standard installation, tried Windows 7 32 bit, nothing helped. tried Other drivers and other motors.

My solutions was enable STEP LOW ACTIVE, that did the trick. The motors are running smooth as silk now.

BTW: I'm currently running a USB breakout board called Novusun NVUM_SK. el cheapo china card. Seems to work fine until now, have read somewhere about some incompability with mach3. I don't know, we'll see.

link to my breakout card, where you can also find the driver plugin for mach3. The card did not kcome with any software included when I bought it at ebay.