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From: melillo@ERE.UMontreal.CA (Melillo Marc)
Subject: Re: IBM PC Stepper control
Message-ID: <melillo.781540112@mistral.ERE.UMontreal.CA>
Keywords: stepper motor IBM control card
Sender: news@cc.umontreal.ca (Administration de Cnews)
Organization: Universite de Montreal
References: <mlehman.781134229@bix.com> <Cx3p3s.8JI@nntpa.cb.att.com>
Date: Fri, 7 Oct 1994 14:28:32 GMT
Lines: 48

wrb@ccsitn.cb.att.com (Wally Blackburn) writes:

>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
 ^^^^^^^^^^^^^^^^^^^ There's something wrong with this address (unknown host).
Can you verify it, or send me this file by email. I'm very interested.


>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
Thank you
Marc Melillo                     melillo@ere.umontreal.ca
School of Optometry
Universite de Montreal
Montreal, Quebec, Canada
