Re: HELP: Bipolar stepper ciruit

Hi Al,

Seems you would benefit from a Palm as your controller. this would
offer you true portability and as you have a single function device,
your needs don't vary as radically and as quickly as the machine tool
guys.


However.... there is no current (that I know of, and just recently
discussed on here) method of connecting a Palm and using that as your
controller.

A laptop would work well.

do you have enough power to run everything in the field ? or are
based in a location close to power ?

Also, are you set for a single axis or 2 ?

Possible applications would be the single axis FROG.

Another is a single axis unipolar driver that uses the serial port.
I got one off e-bay last year. It is a PIC microporcessor and has a
priority language (free) and is available in multi axis. I couldn't
find the site, but I have the guy's e-mail address. It is limited to
low power, but might serve if you have the ampacity to handle a uni-
polar driver with limiting resistor. Drop me an e-mail if you want
the guy's e-mail.

Dave



--- In CAD_CAM_EDM_DRO@yahoogroups.com, "al <101@g...>" <101@g...>
wrote:

> 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