Alt-BEAM Archive
Message #13132
To: beam@sgiblab.sgi.com
From: "Chris" beam@sgiblab.sgi.com
Date: 7 Apr 2000 21:27:16 -0000
Subject: Question about photodiodes
How do photodiodes work, and how can I use them in a four motor walker???
13133 Fri, 07 Apr 2000 18:19:44 -0400 Re: Wacky ideas floating around beam@sgiblab.sgi.com "Sathe Dilip" Don't lose heart. If you promise to run your bot indoors/out of direct
sunlight, you may be able to use a Fresnel lens. I have seen credit
card sized (& even bigger) fresnel lenses sold in dollar shops for what
else - a dollar each. These are very thin (about a mm thick) and made
of plastic - so light weight too. The heat effect on solar cells is
something you still have to worry about. Hence the condition of using
indoors. Anybody tried this?
Dilip
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William Cox wrote:
>
> Oh.... to bad.
> -William
SNIP
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The early bird may get the worm, but the second mouse gets the cheese.
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13134 Fri, 07 Apr 2000 22:19:57 GMT umm beam@sgiblab.sgi.com "Alex Hegyi" does anyone know where to find Andrew Miller's tutorial on how to build a
walker? None of the links I found work.
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