Alt-BEAM Archive
Message #10337
To: beam@sgiblab.sgi.com
From: "Sathe Dilip" sathe_dilip@bah.com
Date: Thu, 17 Feb 2000 09:04:58 -0500
Subject: [alt-beam] Re: pdiode ptransistor?
That' right. Also having the two diodes back to back ensures that
(irrespective of the polarity of the associated circuitry) atl east one
of them is reverse biased thus offering a high equivalent impedance to
rest of the circuitry so that its function is not affected (in an
unwanted way).
Dilip
----------------------------------------
Rob wrote:
>
> Sathe Dilip wrote:
>
> > A photo diode will just give you the increase in leakage current when
> > exposed to light.
>
> So is that how the two photodiodes work in a bicore? They are connected
> cathode to cathode and when the light hits one side it leaks allowing the
> current to flow opposite to its orientation but with the orientation of the
> other photodiode. (clear enough I hope)
>
> Rob
--
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The early bird may get the worm, but the second mouse gets the cheese.
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10338 17-Feb-00,Time: 07:01:58 ANN: fire-fighting robot contest at Penn State (3-25) handyboard@media.mit.edu Bob Avanzato
10339 Thu, 17 Feb 2000 08:25:53 -0800 Gear motors beam@sgiblab.sgi.com owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
I think I have found a gear motor that would work for beam or other small
robotic applications. It runs at a max of 12v and 60 ma. It runs at 30
rpms. They are selling for 6.95 from MECI. I think I will purchase a pair
of them. I will let you know how they work. If anyone else has these post
info on them.
______________________________________________________
10340 Thu, 17 Feb 2000 11:32:55 EST [alt-beam] soldering iron beam@sgiblab.sgi.com Toby503@aol.com Know I know this might sound dumb but just listen. I just bought some Kester
Ultrapure Tip Tinner and I have a pretty good idea how to use it, but I just
want to make sure. Can anyone tell me how to use it? Thanks..
Rusty
10341 Thu, 17 Feb 2000 07:54:14 -0800 [alt-beam] Re: Steven Bolt beam@sgiblab.sgi.com Bruce Robinson Senior wrote:
>
> Anyone know what happened to Steven Bolt?
Steve is happily pursuing his own interests. He continues to make
interesting robots, most of them involving small processors.
Regards,
Bruce
10342 Thu, 17 Feb 2000 09:59:17 -0700 [alt-beam] Re: soldering iron beam@sgiblab.sgi.com Dave Hrynkiw At 09:32 AM 2/17/00 , Toby503@aol.com wrote:
>Know I know this might sound dumb but just listen. I just bought some Kester
>Ultrapure Tip Tinner and I have a pretty good idea how to use it, but I just
>want to make sure. Can anyone tell me how to use it? Thanks..
Get your tip nice'n'hot, push it into the cleaner and roll it around, then
take it out and wipe it clean on your sponge. Dat's it!
It's good stuff - I've prolonged the life of my soldering iron tips by a
factor of 5 at least.
-Dave
---------------------------------------------------------------
"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
2 vowels. Pronounciation? _SMITH_".
http://www.solarbotics.com
10343 Thu, 17 Feb 2000 09:54:38 -0800 [alt-beam] Re: ...A.Miller web page, tutorial..... beam@sgiblab.sgi.com Bruce Robinson "Scolman,Jim" wrote:
>
> Hi, does anyone have a copy of the Miller Walker Tutorial,
Go to the Beam Web Index: http://www3.telus.net/rfws/bwi/index.html
and
click on "Walkers". Up at the top of the 2-motor section you will find
the current link to Andrew's tutorial (yes, it's on a mirror site).
I try to keep these links current as various sites move about.
Regards,
Bruce
10344 Thu, 17 Feb 2000 10:07:28 -0800 [alt-beam] Beamland webcam down for a few... "'beam@sgiblab.sgi.com'" "Feser, Jason" Roomie didn't pay the cable bill, so...no cam for a day or so..
sorry peeps - it'll be back up shortly.
:j'
10345 Thu, 17 Feb 2000 13:40:07 -0500 Re: ...A.Miller web page, tutorial..... beam@sgiblab.sgi.com Bruce Robinson [mailto:Bruce_Robinson@telus.net]
"Scolman,Jim" wrote:
>
> Hi, does anyone have a copy of the Miller Walker Tutorial,
Go to the Beam Web Index: http://www3.telus.net/rfws/bwi/index.html
and
click on "Walkers". Up at the top of the 2-motor section you will find
the current link to Andrew's tutorial (yes, it's on a mirror site).
I try to keep these links current as various sites move about.
Regards,
Bruce
10346 Thu, 17 Feb 2000 11:27:42 -0700 [alt-beam] Re: Popper boards for sale! beam@sgiblab.sgi.com Dave Hrynkiw At 10:14 AM 2/17/00 , William Cox wrote:
>Where's the schematic?? Who sells the Panasonic cells?
The Panasonic cells are the "Suncerams" that we already have been carrying
for years. We have a copy of the datasheets at:
http://www.solarbotics.com/pdf/sunceramcat.pdf
Regards,
Dave
---------------------------------------------------------------
"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
2 vowels. Pronounciation? _SMITH_".
http://www.solarbotics.com
10347 Thu, 17 Feb 2000 12:00:57 -0600 ...A.Miller web page, tutorial..... BEAM Mailing List (E-mail) Scolman,Jim [SMTP:ScolmaJi@amsworld.com] Hi, does anyone have a copy of the Miller Walker Tutorial, or is it on a
Jim Scolman
AMS Services, Inc.
Bothell, WA
425-402-1000 x353
206-910-6095
scolmaji@amsworld.com
Network Administrator
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