Re: [CAD_CAM_EDM_DRO] Re: HELP: Bipolar stepper ciruit

Hi Dave,
thanks for your reply, I'm on rather a tight budget :( and would prefer to
keep away from a
laptop altho I know it would be ideal and have seen many circuits I could
use with one.
At first it will be a single axis but eventually a 2 axis control. It will
be battery operated.
There is actually a hand controller sold for this stepper but the price is
about 10 times
what I could build one for I feel sure, or that how I've seen electronic
bits in the past.
So you know my problem now $$ :( I was an electronic tech but never had
anything to do
with steppers. . Thanks again I've had more help on this group [altho I'm
told I'm off
topic ]than any of the astro group. al [this is for a small stepper on a
telescope]
-------Original Message-------

From: CAD_CAM_EDM_DRO@yahoogroups.com
Date: 05 January 2003 20:52:07
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] 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

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