Newsgroups: comp.robotics
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From: jack@robotics.jpl.nasa.gov (Jack Morrison)
Subject: Re: Attitude sensors... and a few more things
Message-ID: <1994Sep12.183416.2535@llyene.jpl.nasa.gov>
Sender: news@llyene.jpl.nasa.gov
Reply-To: jack@robotics.jpl.nasa.gov
Organization: Jet Propulsion Laboratory
References: <CvwDMp.MFM@cunews.carleton.ca>
Date: Mon, 12 Sep 1994 18:34:16 GMT
Lines: 24

In article MFM@cunews.carleton.ca, jlamorie@schoolnet (Joshua Lamorie) writes:
>	We are working on a project to make a flying robot that has wired 
>stability, so we need to have a fair amount of Feedback as far as 
>attitude is concerned.  I mean I could play around with some glass tubes, 
>wires and a bit of mercury, but it would be nice if there was something 
>out there all ready.

There are at least a few manufacturers that make such devices, called
(electrolytic) tilt sensors or clinometers (not using anything so nasty
as mercury, but a conductive fluid whose resistance across various electrodes
provides an analog signal proportional to tilt angle). They're not terribly 
expensive, although they do tend to have long settling times (up to a few 
seconds). A couple of (USA) sources:

	The Fredericks Company
	215/947-2500, fax: 215/947-7464
	
	Applied Geomechanics
	408/462-2801, fax: 408/462-4418
---
"How am I typing? Call 1-818-354-7782"               jack@robotics.jpl.nasa.gov
Jack Morrison/Jet Propulsion Lab/MS107-102 4800 Oak Grove Dr, Pasadena CA 91109


