Re: Troubleshooting, part II

Rick,

Put some BIG numbers in the speed setting parameters of stepster.
Sounds like you're s/w is putting pulses out faster than the motor
can move. You get movement at the beginning and end of the "move",
since that's when the pulses are coming most slowly...

Hope this helps,

Ballendo

--- In CAD_CAM_EDM_DRO@y..., "Rick Miller" <apollo@a...> wrote:
> Hello and thanks to all who replied to my previous post.
>
> I finally managed to get some movement out of my step motors, so I
think I can (probably) rule out my wiring as being a cause of the
problem.
>
> I'm using Pacific Scientific step motors, hooked up to Gecko 201A's.
>
> I still couldn't get TurboCNC to make anything respond. Ditto with
CNCPro. But, I ran "Stepster" and was able to get it to move, though
not very well. Here's what happened:
>
> The motors aren't yet hooked up to anything, they're just sitting
on a bench. I ran stepster, set the parameters & pins appropriately
and tried moving the X & Y axes. The Y axis would move erratically,
going between 60-120 degrees (approximately) in one direction, and
somewhat less in the reverse direction. It almost seems like it's
being sent too many steps too fast for the motor to react
appropriately. The X axis wouldn't rotate at all; I think it took one
step in one direction, then one step in the opposite direction when I
reversed it, then it wouldn't do anything until I restarted the
program. Sometimes though the X axis motor would emit a high pitched
sound, almost like something inside the motor was spinning very
rapidly, without the shaft moving.
>
> I thought maybe something was wrong with the motor, so I switched
the motor I had on the X-axis drive to the Y-axis drive, and vice-
versa. I had the same results; what used to be the Y motor was now
making that high pitched sound and not moving, and the what used to
be the X motor was now moving in the same varying degrees of rotation
that the (formerly) Y motor was.
>
> Any ideas what to look for?
>
> Rick
>
>
>
> [Non-text portions of this message have been removed]