Newsgroups: comp.robotics
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From: rbairos@undergrad.math.uwaterloo.ca (Rob Bairos)
Subject: Trouble making SERVO driver
Message-ID: <D49sDL.DE4@undergrad.math.uwaterloo.ca>
Sender: news@undergrad.math.uwaterloo.ca (news spool owner)
Nntp-Posting-Host: cayley.uwaterloo.ca
Organization: University of Waterloo
Date: Sun, 19 Feb 1995 23:10:32 GMT
Lines: 43


Ive read the faq and looked through
some newsgroups but:




Hi.

Im starting a project that requires
the positioning of mirrors or
prisms to position a beam of light
over 2 axis.

I thought servos might do the
trick but Ive never worked with
any before.  I picked up a couple
and am having trouble driving them
correctly.

My driver is just a 556 timer
outputting a 100 hz pulse
with a hi period of 1-5 ms.

My analog skills are basic but
the timers output is severly
affected when the servo is attached,
though it moves it forward/backward
luckily enough.

my question is: does anyone have
any experience building a servo
driver?  are there any online
specs or documentation?  an
application circuit would be
great if it existed.

thanks for any help you might offer.

Rob.



