Alt-BEAM Archive
Message #11007
To: beam@sgiblab.sgi.com
From: harsh@lanl.gov
Date: 28-Feb-00,Time: 07:44:17
Subject: [alt-beam] "On the BEAM" video
11008 Mon, 28 Feb 2000 09:04:45 -0600 [alt-beam] Re: Schematics beam@sgiblab.sgi.com Richard Piotter a Diodehas a cathode and anode. Cathode is negative.
- +
---|<---
Well, the N and P in transistors identifies the polarity.
| / (P) opposite of Base, same as emmitter
|--'
----| (N) Base with both points tied
|<-.
| \ (P) Flat side of arrow facing out
| / (N) opposite of Base, same as emmitter
|--'
----| (P) Base with both flat sides tied
|->.
| \ (N) Point of arrow facing out
Blame Canada wrote:
>
> i think its that when the arrow points out its a PNP and when the arrow
> points in its a NPN like the 3906 and 3904 are npn and pnp
> well something along those lines anyway.
>
> BLAME_CANADA59
>
> ______________________________________________________
>
11009 Mon, 28 Feb 2000 08:46:23 -0700 [alt-beam] Re: bot video beam@sgiblab.sgi.com Robert Stein At 08:04 AM 2/28/00 -0600, you wrote:
>Hey All:
>after many request, i have a video up of my walker.
>i plan to link to it from my bot's home site, but you can go directly to
>the video at:
>www.angelfire.com/electronic/botvideo
>but:
>i myself can't get the link to werk, but a friend says that the link works
>fine.
>must be somethin with my browser?
>anyways, test it out and let me know if it werks.
>Thanks for the help!
>-Sparky
Nice ..Very nice! ... 'nuf said
Robert
11010 Monday, February 28, 2000 6:33 AM RE: Walkers beam@sgiblab.sgi.com Phillip A. Ryals
>Well, most don't. From all I've read, Mark Tilden is
the only one who's
>done it. I think it has something to do with
sticking in photodiodes in
>place of a resistor in the circuit. Basically, you
just need to alter the
>timing enough to make the back legs turn a little
more one way than the
>other.
>
>Still, without a waist motor, a 2 motor won't turn
terribly quickly, AFAIK.
>Anyone else who's managed this feat?
>
>-phillip
>
>-----Original Message-----
>There's something that's been bugging me ever since i
saw my first
>2 motor walker: how do they turn??? all i can see
them doing is running into
>a wall and flicking a switch
>someone help me!
>
>BLAME_CANADA59
>
>
>
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11011 Tue, 29 Feb 2000 00:44:24 +0800 [alt-beam] Re: Component Alternatives? beam@sgiblab.sgi.com Peter Hamer Hi,
Got to put a plug in for us - Why pay double the price to the big companies
(eg. Farnell) when you can support small business that supports your enthusiasm.
Peter
> As for the 1381 you can use a TC54. Is them same as a 1381J (2.7 volt
> trigger).
>
> You can get all these parts from Farnell, and there is one in NZ
> (http://www.farnell.com/nz/index.html)
>
> Elmo
--
Peter & Megan Hamer Robot-Oz
Web: http://www.robotOz.com.au
Ph: (08) 9243-4842
E-mail: kits@robotOz.com.au Fax: (08) 9246-1563
7 Felgate Pl, Warwick, Perth, Western Australia, 6024
11012 Mon, 28 Feb 2000 08:49:34 -0800 [alt-beam] Re: bot video Sparky after many request, i have a video up of my walker.
i plan to link to it from my bot's home site, but you can go directly to
the video at:
www.angelfire.com/electronic/botvideo
but:
i myself can't get the link to werk, but a friend says that the link works
fine.
must be somethin with my browser?
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