Re: [CAD_CAM_EDM_DRO] stepper motors missing steps

hi,

if it is moving ok at the beginning, and just vibrates after a while, i guess you have set max speed (feedrate) too high. at the beginning the controller is accelerating, so sending pulses more and
more often. at a point the motor/drive cannot follow. also can try decreasing the acceleration.

vajk

"dvls333 " wrote:

> Recently i have found a text about using the controller of a disk
> drive and use the included stepper motor from the parallel port
> I connect everything (i have 2 5,25" teac drives) first i tried the
> mastercontrol ez cnc free software but all i get is some jerky
> movement (just by opening the program) and vibration,then i tried
> turbocnc there everything seems to work fine i jog them cw ccw no
> problem until i realized that if i use the go to (g) command to some
> point and then return to the original position ther some steps
> missing if sent it to some distance it rotates well for two rounds
> then vibrate loose some steps and then for the last rounds it looks
> ok,also if run a dnc file that after a few small movements return to
> the original point, but it never returns.
> Please help, somebody, this is my first try i want to build an
> engraver.
>

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