when i try to move my z axis manually in repetier-host or any other host software my z axis motors freeze up. The odd thing is when i have just one motor plugged(either the right or the left) into the board and i move it manually it seems to work fine. I tried re-downloading all my drivers. Im not sure what is left to do. My current EEPROM value for steps per mm on my z axis in the repetier-host is default at 4000, when i change the EEPROM z value for steps per mm to anything less than 2500 both motors work.
We used to use 4500 or so on the all thread mpcncs. But the leadscrews are 400, usually.
Can you share more info on your build? Which machine is it? Which controller? Where did you get the firmware? Did you source the parts from the shop (just as a debugging thing, we help everyone). A couple of pics would help.
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