Newsgroups: comp.robotics
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From: arasv@tplrd.tpl.oz.au (Aras Vaichas)
Subject: Two axis attitude sensor
Message-ID: <1995Feb9.162056.2074@sydrd15.tplrd.tpl.oz.au>
Originator: arasv@sydrd108
Lines: 22
Nntp-Posting-Host: sydrd108
Organization: Telectronics Pacing Systems
Date: Thu, 09 Feb 95 05:04:46 GMT

Imagine if you had an old large(ish) trackball with an eccentrically
weighted ball. Connect the pulsing sensors to clock over a binary
counter, and use logic to control the up/down by sensing the
quadrature.

Take the modulus-X of the counter and you've got an attitude sensor 
which can turn infinitely provided that the number of pulses per rev
divides into the binary counter's maximum count with no remainder.

Perhaps an old mouse can be used to build a very compact two axis
attitude sensor. :)

Or the thing could be gimbal mounted or something...

Aras Vaichas


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