Alt-BEAM Archive
Message #07724
To: beam@sgiblab.sgi.com
From: Senior kyled@cruzers.com
Date: Mon, 15 Nov 1999 19:26:05 -0700
Subject: [alt-beam] Re: absorbpsion circuit or something
Oh yeah yeah like a big coil of copper wire, right? Only thing is that
you need AC voltage (which os course can be made from DC) but most
robots run on DC. Hmm... what about a BEAM bot that sits near the wiring
in your walls? Has anybody experimented with getting electricity from
the mains without actually plugging it in to a wall outlet?
Interesting...
Happy cooking,
Kyle
johannes urke wrote:
>
> hey in those robowars competitions why dont they make or buy a REALLY big
> what was it called.... you take a stick a bunch of copper thread and put it
> together.
> arrgh i dont remember what it is called!!!!
> anyway you connect it to a solarengine and when it comes near something with
> electricity in it.
> the motor schould start spinning..... right?
> im not an expert so im most supposedly wrong but i had to make sure.
>
> ______________________________________________________
>
7725 Mon, 15 Nov 1999 19:32:38 -0700 [alt-beam] Re: Ceramic cutting beam@sgiblab.sgi.com Senior > Richard Caudle wrote:
>
> Hi all!
>
> I'm making a BEAM Angel tree toppper for my Christmas tree and have
> run into a snag. Does anyone know if it's possible to cut ceramic
> with a Dremel or some such like thing? I've taken a flapping
> mechanism out of one of those flapping bird toys and attached a LEGO
> right angle gear to it. I need to carve out the back of the
> head-and-shoulders bit to make the wings fit. Any suggestions? I
> gave some thought to putting a head on it, but I thought it would be
> too creepy...
Haha kinda like that girl from the exorcist! Well, I imagine ceramic is
very cuttable, just if you go at a slow speed it'll want to chip, and
water is very helpful. Keeps everything cool and no dust!
> Don't want to traumatize the bunchkins! (or me late at night slaving
> over the computer!).
LOL LOL LOL! That's the best way to put it! Slaving over the computer...
man, that's keeper.
7726 Mon, 15 Nov 1999 20:06:31 -0700 [alt-beam] Re: If you can't come to the museum, a virtual version of the beam@sgiblab.sgi.com Senior On your sat bot picture, and comments, you say, (paraphrasing) 'what was
interesting is that the satbot oriented itself towards the flash using
only it's coils and interaction with the earth's magnetic field.'
Am i sensing sarcasm?! Note the two eye-looking things in the top of the
silver box. Maybe it sensed the magnetic force your flash put out? (I'm
sure there's some there... do I even know what I'm talking about?)
Anyways, what I'm asking, what is your opinion on that bot? Anybody know
of schems for it?
Adios,
Kyle
John A. deVries II wrote:
>
> I don't know how many of you will be able to visit the Los Alamos National
> Laboratory between here and Jan. 31, 2000 to see the excellent exhibit of
> Mark Tilden's robots. For those of you who can't, I am attempting to bring
> some of the experience of the exhibits to you via the Heretics site:
>
> http://www.serve.com/heretics
>
> Navigate there and click on the following topic:
>
> Virtual Los Alamos National Lab Museum BEAM Exhibits
>
> Note that the page has a navigation frame on the left but you can drag the
> separator to the left if you want to see more of the pictures on your
> screen at one time. This is my first cut at this -- it is incomplete and
> needs improvement. If anyone has any suggestions, please write me.
>
> Thanks,
>
> Zoz
> zozzles@lanl.gov, aubois@trail.com
>
> ---------------------------------------------------------------
>
> Do you have a BEAM question?
> Try one of the following sites -- they really help!
>
> BEAM Mailing List Archive http://www.egroups.com/list/alt-beam
> Advanced BEAM Mailing List http://www.egroups.com/list/spinalcolumn
> BEAM Heretics http://www.serve.com/heretics/
> BEAM Robotics Tek FAQ http://people.ne.mediaone.net/bushbo/beam/FAQ.html
> BEAM Mailing List Archive http://www.egroups.com/list/alt-beam/
> BEAM Online http://www.beam-online.com/
> Chiu-Yuan's BEAM Page http://www.geocities.com/SouthBeach/6897/
7727 Mon, 15 Nov 1999 23:41:53 -0500 [alt-beam] Re: absorbpsion circuit or something beam@sgiblab.sgi.com Victor Snesarev I seem to remember that all that's needed to induce electric current in a loop of
wire is change in magnetic flux which means change in electric current in some
other wire. So, a 7xx240 switching on and off can induce some current in a loop of
wire placed next to it, but with the current levels we are dealing with, this
induced current would be extremely small.
Speaking of robowars... You probably be more successful in scrambling the other
bot's circuits with a rotating magnet or a high frequency noise provided that your
bot is protected against that sort of thing with special shielding or uses
military grade chips.
Hmm... sidetracking a bit, I wonder how hard would it be to have a bumper-feeler
on the robot that would sense change in voltage with respect to its own ground,
and if there is some considerable change would switch on a charging circuit. Since
most BEAM bots have their "guts" hanging out, why not feed on them. Is this the
same idea robots that have charging stations they seek out would use?
Victor
Senior wrote:
> Oh yeah yeah like a big coil of copper wire, right? Only thing is that
> you need AC voltage (which os course can be made from DC) but most
> robots run on DC. Hmm... what about a BEAM bot that sits near the wiring
> in your walls? Has anybody experimented with getting electricity from
> the mains without actually plugging it in to a wall outlet?
>
> Interesting...
>
> Happy cooking,
> Kyle
>
> johannes urke wrote:
> >
> > hey in those robowars competitions why dont they make or buy a REALLY big
> > what was it called.... you take a stick a bunch of copper thread and put it
> > together.
> > arrgh i dont remember what it is called!!!!
> > anyway you connect it to a solarengine and when it comes near something with
> > electricity in it.
> > the motor schould start spinning..... right?
> > im not an expert so im most supposedly wrong but i had to make sure.
Home