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General Mach Discussion / Crazies Motors !!!... Please Help!!!

« on: December 19, 2011, 06:33:57 PM »

Extreme Newbie here.  I have a  homemade CNC and it was running fine for a month.
Now, I have a problem with two of my motors (Y and Z axis).   When I specify an UP move
It go UP or DOWN, randomly.  Same if I specify a DOWN move.

I reinstalled the MACH3... but same.

Both Stepper Motors are HT23-280-8 from Robotix.
The third one (X axis) is a HT23-400-8.
All in parallel.
Gecko540.
Mach3.

Would one of you kind souls please enlighten me?.

Thanks.

Frank