Newsgroups: comp.robotics
From: Leon@lfheller.demon.co.uk (Leon Heller)
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!fas-news.harvard.edu!newspump.wustl.edu!newsreader.wustl.edu!news.starnet.net!wupost!howland.reston.ans.net!news.sprintlink.net!pipex!peernews.demon.co.uk!lfheller.demon.co.uk!Leon
Subject: Re: Arm Position Detection
References: <3i2rd4$cb8@news0.cybernetics.net>
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Date: Fri, 17 Feb 1995 22:42:22 +0000
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In article <3i2rd4$cb8@news0.cybernetics.net>
           ckohout@cybernetics.net "Chris Kohout" writes:

> I'd like to read the angle of say an elbow joint using the Miniboard. 
> Has anyone seen something that could help? What about that 
> rubber strip stuff that acts like a variable resistor when it's bent?
> Couldn't that be read as an indication of an angle?

The VPL Dataglove used fibre-optic cable. When the cable was stretched
it contracted, attenuating the light from an LED emitting into one
end of the cable, and detected at the other end. By running the cable
along the top of a finger, the amount of flexion could be detected. This
should work quite well for a single joint like the elbow.

-- 
Leon Heller                       | "Do not adjust your mind, there is
G1HSM                             |  a fault in reality": on a wall
Email: leon@lfheller.demon.co.uk  |  many years ago in Oxford.
Phone: +44 (01734) 266679         |
