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Article #552

Re: Sonar/Camera platform

#552
From: Anthony Thomas Green
Date: Sun, 08 Jul 1990 19:24
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ee0i+@andrew.cmu.edu (Ethan Z. Evans) writes:

>To those who know:
>	I need to find two things:  A two degree of freedom (pitch and 360
>degree rotation) camera mount, and a good source of moderately priced
>ultrasonic rangefinders.... <rest of article deleted>

I have no idea about the camera mount, but it seems like THE place to get 
ultrasonic transducers is from Polaroid. I recently finished building a robot 
that used one, and it worked suprisingly well. We were able to interface the
sonar with our CPU (MC6811) with minimal hardware (a couple of pull up 
resistors). The only tricky thing about it is that it draws 2.5 AMPS for
100ms every time you make it ping. If you're going to run it off of small
batteries, make sure you put a big capacitor across power and ground so as
not to affect any other components running on the same batteries.

The handbooks provided are a little unclear, so if you have any questions
feel free to direct them my way.
 
 
Anthony Green
green@ai.toronto.edu
(416) 537-9889
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Message-ID: <90Jul8.152406edt.8312@ephemeral.ai.toronto.edu>
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!news-server.csri.toronto.edu!ephemeral.ai.toronto.edu!ai.toronto.edu!green
References: <kaZqC6600VoRMACFoT@andrew.cmu.edu>

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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!news-server.csri.toronto.edu!ephemeral.ai.toronto.edu!ai.toronto.edu!green
From: green@ai.toronto.edu (Anthony Thomas Green)
Newsgroups: comp.robotics
Subject: Re: Sonar/Camera platform
Message-ID: <90Jul8.152406edt.8312@ephemeral.ai.toronto.edu>
Date: 8 Jul 90 19:24:20 GMT
References: <kaZqC6600VoRMACFoT@andrew.cmu.edu>
Organization: Department of Computer Science, University of Toronto
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