Re: [CAD_CAM_EDM_DRO] Re: Lost steps

In a message dated 08/21/2000 1:17:08 PM Hawaiian Standard Time,
jmelson@... writes:

<< Ah, HA! Now, you are getting somewhere. Clearly, it is some sort of
interference
problem, radiation from the motor wires and other things are
contaminating
the step and/or direction inputs to the driver. >>


I had similar problems on mine. I installed decoupling caps and went to
twisted pairs of 20 or 22 ga wire for the signal, no shield. The problem went
away!! I don't recall the value of the decoupling caps but they must be small
as larger caps did manage to dampen the pulse when observed on a scope.
Perhaps Jon would have the value off the top of his head. I'd have to drive
out to my dad's place to look/see. Good luck

Peter
THRD, Inc.