Re: HELP: Bipolar stepper ciruit

Hi Al,
Just to let you know, Tim mentioned my stepper driver (Xylotex
single axis). The MINIMUM required motor voltage is 8 Volts on this
drive, so a 6 Volt system will not work with it if that is your only
voltage source. If you can get 12V out there, then you could use my
board with your 'machine'. It also requires +5V for logic, but that
can be easily obtained with a 7805 to the 12V supply.

Jeff
http://www.xylotex.com
xylotex @ hotmail.com (take the spaces around the @ out)

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Tim Goldstein" <timg@k...>
wrote:

> Al,
>
> Pretty straight forward and many ways to do it. One solution that

comes

> to mind is to get a E-labs http://www.elabinc.com/ EDE-1204 bipolar
> stepper drive chip. It is a custom programmed PIC chip that

includes a

> step generator or can be driven by an external step generator. It
> outputs the proper phase signals to drive a L298 bridge. There are

also

> a number of step generator circuits in the files section of this

group

> that will directly drive a step and direction driver (

www.xylotex.com

> now has a low cost single axis stepper board ).
>
> Hope this helps. It is a little off topic for the group, but the

concept

> is identical to making a non-computer driven power feed which is

very on

> topic. So if we just talk about driving your machine without a

computer

> we can sneak this by Bill <g>. Actually there was a thread on this

about

> a week ago if you search the archives.
>
> Tim
> [Denver, CO]
> Sherline products at Deep Discount
> Mach1 & DeskCNC with credit card ordering
> www.KTMarketing.com/Sherline
>
>
>
> > -----Original Message-----
> >
> > Happy new year to all.
> > I'm looking for a cuircuit to run a small bipolar stepper.
> > I need a hand held controller as its for a telescope, all
> > the circuits I've seen are computer controlled and I have no way

of

> > draging my p.c/monitor out side :)
> > Hope someone can help. The makers controller runs of 6Volts
> > batteries. Thank you. al
> >
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html