Alt-BEAM Archive

Message #11456



To: beam@sgiblab.sgi.com
From: "Kenneth Hale" kennando@hotmail.com
Date: Tue, 07 Mar 2000 20:16:14 GMT
Subject: [alt-beam] IR detectors


I bought a infared LED and infared photo transistor for radio shack for a IR
detector and wired them up according to a circuit that I got out of some
robotics book but it doesn't work. Either my components are bad or the
circuit is. If anyone has made one of these before and could help me out I
would appreciate it.

Thanks,
Ken
______________________________________________________



11457 Tue, 07 Mar 2000 13:15:03 -0700 [alt-beam] Extremely Cool Page: Downloadable PDF books / Cybernetics / beam@sgiblab.sgi.com "John A. deVries II" If you happen to find the description of W. Ross Ashby's work (for example,
his homeostat) in the recent Smithsonian article interesting, the people at
the Principia Cybernetica Web (http://pespmc1.vub.ac.be) have a gift for
you: a downloadable PDF version of Ashby's 1957 book "An Introduction To
Cybernetics" (see http://pespmc1.vub.ac.be/LIBRARY.html for a pointer to it
and others). Their description of Ashby's book reads:

>Still the only real textbook on cybernetics and systems, explaining the
>basic principles with simple mathematics and exercises. In spite of its
>age, the thinking behind this classic is still very modern.

and

>This elegance of thought is illustrated in particular by the present book,
>which is still the only real textbook on cybernetics (and, one might add,
>system theory). It explains the basic principles with concrete examples,
>elementary mathematics and exercises for the reader. It does not require
>any mathematics beyond the basic high school level. Although simple, the
>book formulates principles at a high level of abstraction. For more
>concrete and extensive illustrations of systems principles, you may refer
>to our other electronic books, "The Macroscope" and "The Phenomenon of
>Science". For a similar abstract, high-level, but technically simple
>approach, this time to physics, you can check "Representation and Change".

Past this, I would highly recommend the Principia Cybernetica Web in
general -- a look at their table of contents
(http://pespmc1.vub.ac.be/TOC.html) is pretty amazing.


Z



11458 Tue, 07 Mar 2000 12:38:38 -0800 [alt-beam] Re: Was lobster, now bees beam@sgiblab.sgi.com Bruce Robinson Bumper314@aol.com wrote:
>
> ... I think if we get a standard plan out then we could have others
> contribute to the whole RJP. I believe and idea about this was
> brought up earlier, but didnt go anywhere ...

Actually, Richard has been pursuing it pretty steadily since we talked
about it on the list. As of now, he's got a base unit board/kit
available, with plans for add-on boards in the future. Poke around at:

http://www.geocities.com/ResearchTriangle/Forum/4225/BEAM.html

and look for the key word "HPV". You'll find descriptions and Wilf's
write-up & circuit.

Bruce



11459 Tue, 07 Mar 2000 14:55:44 -0600 [alt-beam] Re: Quick-Change components beam@sgiblab.sgi.com "Phillip A. Ryals" ok, I must be crazy. What "pin sockets" are you talking about? The closest I
could figure are the sockets for CPU's and cables. But neither of them have
what you're refering to. I did find some almost capable sockets in the small
cable that connects a cdrom drive and sound card.. but it only has three in
each end.

The only other thing I can think of is maybe on *old* boards. If you could
clear that up I'd appreciate it.

phillip


"Feser, Jason" wrote:

> Yup. They are pin sockets. I've managed to melt about 1000 of them out of
> old pc hardware with a pencil torch, but you can buy em' if you want. Dave
> sells them over at http://www.solarbotics.com.

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