From:	"Alexei A. Frounze" <alex DOT fru AT mtu-net DOT ru>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: how to order motors via parallel port
Date:	Wed, 24 May 2000 01:53:05 +0400
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are you inventing a plotter/printer?

actually the problem is more complex than you can expect. with parallel
ports you may send bytes to those motors. but motors don't work with bytes,
they work with particular voltage and current. usually speed is voltage
dependant but your curve does not represent speed/voltage, it represents
coordinates. so you need to convert coords to speed/voltage and then make
your motors driven by bytes being sent via parallel ports.

good luck
Alexei A. Frounze
-----------------------------------------
Homepage: http://alexfru.chat.ru
Mirror:   http://members.xoom.com/alexfru

ennadif mohammed wrote:
> 
> Hello everybody
> 
> I am very interested of knowing if C or C+ + in the DJGPP
> [env] could solve my problem,
> 
> Being given a curve drawn in the screen, how read the
> pixels of the screen and by following order two electric
> motors via the parallel port so that these motors describe
> the same curve, (of course the motors browse two
> perpendicular journeys, and they are plugged to the
> parallel port via a digital analogical converter and a
> booster ),

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