Newsgroups: comp.robotics
Subject: Pulse Width Modulation
From: greg.jackson@mecheng.fullfeed.com (Greg Jackson)
Path: brunix!news.Brown.EDU!noc.near.net!howland.reston.ans.net!news.moneng.mei.com!uwm.edu!daffy!uwvax!gorgon!fullfeed!mecheng!greg.jackson
Distribution: world
Message-ID: <af.2179.33.0NAF5FF2@mecheng.fullfeed.com>
References: <wgpp3ee00iV1AIDy5z@andrew.cmu.edu>
Date: Fri,  5 Nov 93 08:03:00 +0000
Organization: MechEng / ASME
Lines: 23

-> Message-ID: <wgpp3ee00iV1AIDy5z@andrew.cmu.edu>
-> Newsgroup: comp.robotics
-> Organization: Sophomore, Electrical and Computer Engineering,
-> Carnegie Mellon, Pittsburgh, PA
->
->   I'm looking for a chip to do pulse width modulation.  I'd like
-> something that is easily interfacable to an HC11 and which requires a
-> minimum of extra parts.  Also, the ability to do more than 1 channel
-> per chip would be great.  Can anyone recommend a chip?  I was given
-> the number of a Nat'l Semiconductor part (LM3524N-ND / LM3524DN-ND)
-> but know nothing else about it.  Information on it would also be
-> appreciated.
-> Thanks,
->
-> Chris Kristof
-> Sophomore ECE
-> Carnegie Mellon University

Why not use the National 628 or 629.  One of those not only does the
PWM, it also offloads a tremendous part of the task if you're thinking
about moving things.  It will solve your encoder problems, motion
software problems, and closed loop problems.  All you have to do is tell
the little guy where to go.
