Alt-BEAM Archive
Message #07310
To: beam@sgiblab.sgi.com
From: Richard Piotter richfile@rconnect.com
Date: Tue, 02 Nov 1999 21:40:21 -0600
Subject: [alt-beam] Re: MWT on PBS tonight - don't forget!
I didn't see Tilden on Sci Am Frontiers??? You sure he was on that one.
It was called natural born robots. They had a giant cockroach, robo
tuna/pike/cog/the little facial expresions head deal (I forgot it's
name), some tour guide robot with virtual emotion response, the honda
humanoid, Aibo robot dogs, robotic "ducklings", and some socker bots. I
didn't remember spotting any BEAM or Mark...
Dave Hrynkiw wrote:
>
> If it isn't too late, check out PBS's "Scientific American Frontiers"
> tonight. Robots, with a segment with our own MWT.
>
> Later,
> 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
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
7311 Tue, 02 Nov 1999 19:54:44 PST [alt-beam] Re: aquabot beam@sgiblab.sgi.com "Timothy Flytcher" What about O-zone I know that for a jacuzzi you simply use two forty watt uv
bulbs shining through a length of clear pipe for ~500 gallons... could one
make a bot that produces enough o-zone to kill the growths???
>I was thinking..., if you fill the tube with distilled water to the brim,
>than drop you bot in and quickly cap the tube with something tansparent, no
>air, no growth, i hope
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7312 Tue, 02 Nov 1999 21:03:59 -0700 [alt-beam] PBS - no Mark! beam@sgiblab.sgi.com Dave Hrynkiw Hmmm. Sorry guys, but it looks like they didn't use his footage, and used a
lot more time on the robocup soccer instead. Can't blame them - the robocup
stuff was amazing!
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
7313 Tue, 02 Nov 1999 20:54:58 -0600 [alt-beam] Re: solar PSHead motor driver question beam@sgiblab.sgi.com Brad Guillot
SG wrote:
>
> ok, the parts finally came in, i replaced the old 74HC240 for a DigiKey one,
> and the old 1381 "J" with an "L"
>
> the Fled fired up just fine (under INTENSE light btw)
> but nothing from the motor outputs to even fire up an LED.
>
> so.. some of you suggested a motor driver or H-Bridge.
>
> i hooked up a 74ALS245 to the motor and:
> now not even the FLED goes off.
>
> correct me if i'm wrong, but a motor driver has to have its + and -
> connected directly to the power source....
> therefore it is draining the cell before the cell has a chance to charge
> the capacitor because it (the driver) is not turned on by the trigger.
>
CORRECT!
I am sure i am wrong and that there is a proper place to hook up the
power
> to a motor driver on this solar circuit.
>
> any help would be great!
> -Sparky
you need to hook it up to the ground and then to the pin 3(?) of the
1381. look at a solar engine to see what i am talking about
when the 1381 turns the motor on, it then and only then needs to turn on
the motor driver
i think
hope this helps,
brad
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7314 Tue, 02 Nov 1999 23:27:35 -0500 [alt-beam] Re: aquabots - 'sealed' motor George Rix > I agree. But since we're tossing around all kinds of ideas, here's
> another. Build into your aquabot a couple of thin plastic chambers, open
> at the bottom and filled with (not entirely pure) tap water. In each
> chamber place a small copper electrode. Hook up one electrode to the
> positive pole of your power source and the other electrode to the
> negative pole.
Why not just pump the water full of chlorine? Kills most stuff, so if you
have enough, you should never have a problem (but don't drink the water, or
you'll have quite the problem indeed!!!).
Peace out!
Rob Rix
God knew what he was doing when he deprived man of wings.
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