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From: wrb@ccsitn.cb.att.com (Wally Blackburn)
Subject: Re: IBM PC Stepper control
Message-ID: <Cx3p3s.8JI@nntpa.cb.att.com>
Keywords: stepper motor IBM control card
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References: <mlehman.781134229@bix.com>
Date: Mon, 3 Oct 1994 14:19:04 GMT
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In article <mlehman.781134229@bix.com>, mlehman on BIX <mlehman@BIX.com> wrote:
>
>I need info on a card or cards that will control stepper
>motors via an IBM PC. Could use either a devoted card
>or cards, or a unit that atttaches to parallel port(s).
>Any info would be welcome.

Check out the file /pub/cookbook/unsorted/pc_stepr.zip on
ft.bode.ee.ulaberta.  If you can't ftp, I can uuencode it and send it to
you.  I still have kits for the controller.

I have recently rewritten the instructions and included a simple parallel
port control program in QuickBASIC.  The Turbo C source is still included 
also.


A short blurb:

This is the info file for the Opto-Isolated Stepper Motor Controller.
While the info is oriented towards control via a PC parallel port, the
controller can really interface to just about anything.

The controller uses a UCN5804B controller IC from Allegro.  This chip
can control motors at up to 35V and 1.25A continuously.  Peaks of up 
to 50V and 1.5A can be tolerated according to the data sheet.

The inputs to the UCN5804B are optically isolated from the control
circuitry.  Input control voltages from 3 to 12V are acceptable.
Diodes are used to protect the UCN5804B from negative transients from
the motor windings.  For efficient low-voltage operation, Schottky 
diodes are used.

-- 
   Wally Blackburn		   Clinton-Gore - Socialist Leadership
   wrb@ccsitn.cb.att.com		          for the 90s!
   Amateur Radio Station AA8DX	   I'm the NRA.
   '91 FXR	DoD #1375
