Stepper motor 101 was Re: Are steppers considered low frequency motors?

Dave,

I'll only partially disagree; IMO James N did a pretty good job
of "finishing" the original RB design. The kits and boards work as
advertised...

What I agree about is that here is an "open source" microstepping PIC
that no one--to my knowledge--has partnered with a Bipolar or
unipolar CHOPPING output stage...

THAT would be a pretty useful project/product IMO.

Ballendo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<dave_mucha@...> wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Alan Marconett" <KM6VV@>
> wrote:
> >
> > Hi,
> >
> > So what about Linistepper?
> >
> > http://techref.massmind.org/techref/io/stepper/linistep/index.htm
> >
> > Appears to be an attempt to do a linear ramp (triangle?) to drive

a

> stepper?
>
>
>
>
> The LiniStepper is a partial project. Roman Black got the idea,

did

> his project and then moved on. It is not really polished and has

old

> technology (transistors) for today.
>
> Also, it is really limited to about 1 amp max with large heatsinks.
>
> Great for high voltage, low current motors from floppies and such.
>
> Someday, someone will really take the time to get into the unit and
> fix the circuit and polish it quite a bit.
>
> Dave
>