Alt-BEAM Archive
Message #06770
To: beam@sgiblab.sgi.com
From: Brad Guillot mach50@netzero.com
Date: Sat, 16 Oct 1999 14:32:52 -0500
Subject: [alt-beam] Re: Radio Communications?
Instead of radio, Mabye use elecro-magnetic fields; insted of a a radio
transmitter and a reciver,use a bunch if thin wire and a MAD detector
Arno Jansen wrote:
>
> Very interesting indeed. You could even try to make some ant-type BEAMS with
> phermones, to let them find e.g. the easiest route in a maze. Like agents
> load balancing telephone nets. Those are based on real life ants using
> phermones to mark their routes. Some sort of BEAMAnts with analogue
> Bluetooth????
>
> Best,
> Arno.
>
> P.S. For the dutch Beamers: Kan ik een fotocomparator gebruiken om mijn
> photopopper eindelijk eens aan de gang te krijgen?? Zo ja, waar zijn die te
> koop?
>
> -----Original Message-----
> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> Behalf Of Phillip A. Ryals
> Sent: zaterdag 16 oktober 1999 7:39
> To: beam@sgiblab.sgi.com
> Subject: Re: Radio Communications?
>
> Interesting idea.. kinda like bugs and their pheromones. When one is hurt,
> it releases a pheromone and it's either a call for help or a danger call to
> run away.
>
> Sounds hard.
>
> -----Original Message-----
> From: Chris <123abc@chek.com>
> To: beam@sgiblab.sgi.com
> Date: Friday, October 15, 1999 9:56 PM
> Subject: Radio Communications?
>
> > Ok, I know this is a lttle far-fetched but, I'm going to say this
> anyway. Wouldn't it be great if we could some how make some kind of radio
> transmitter and reciever on 2 robots (each has both), and one robot would
> come across some obsticle or something (hit a wall, anything you can think
> of), and then it would transmit a certain tone in acordance with what ever
> is needed, then the other robot would recieve this, play it on a tiny
> speaker (or something, it should work like a telephone beep), identify the
> tone and respond accordingly.
> >
> > I know that sounded hard (and probably impossible), but it would be a
> great research and engineering project. e-mail me if you think this would
> be a great project.
> >
> >Win a LAPTOP Computer and get your FREE E-mail Account at
> http://mail.chek.com
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6771 Sat, 16 Oct 1999 12:37:27 -0700 [alt-beam] Re: OFF TOPIC, IGNORE IF YOU'RE GRUMPY! "'beam@sgiblab.sgi.com'" Wilf Rigter Yes and no! heheh!
The Lord of the Rings trilogy is BIG and when you read it, you become part
of that small group of hobbits, elves, dwarves and human companions called
the Fellowship, in a breathtaking adventure to defeat the dreaded Sauron who
has risen to do great evil in Middle Earth. The story has lots of
interesting details, so like any good book (or movie), you can see something
new in it every time you read it. Is it difficult to read? Once you are
"hooked", you won't be able to put the book down. Is it complicated? There
is a separate book called the Silmarillion which is written like a history
book of Middle Earth and also to explain words and names touched on in the
trilogy in great detail. Scholar? Everyone who was ever entranced by the
power of
of fairytales can understand the story and the magic of mythology.
enjoy!
Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
> -----Original Message-----
> From: AA van Zoelen [SMTP:vsim@xs4all.nl]
> Sent: Saturday, October 16, 1999 11:35 AM
> To: beam@sgiblab.sgi.com
> Subject: Re: OFF TOPIC, IGNORE IF YOU'RE GRUMPY!
>
>
>
> ----------
> > Van: Sean Rigter
> > Aan: beam@sgiblab.sgi.com
> > Onderwerp: Re: OFF TOPIC, IGNORE IF YOU'RE GRUMPY!
> > Datum: donderdag 14 oktober 1999 6:31
> >
> > Thanks for the good news!
> >
> > imho Tolkien's epic masterpiece towers over all other fantasy stories as
> > superb mythological entertainment with deep understanding of language
> > and human nature. Having read the trilogy about 5 times, it has been a
> > major influence on my thinking.
>
> So you read it 5 times. Was it to difficult to understand it in one time
> };->
>
> I am very sorry Sean, but this shot for an open goal i couldn't resist.
> Hehehe!
> Anyway, it is a damn good epic and every sholar have to read it atleast
> ounce.
>
> Bram
>
6772 Sat, 16 Oct 1999 16:35:36 -0400 [alt-beam] Re: Radio Communications? beam@sgiblab.sgi.com "Chris" <123abc@chek.com> No doubt this will probably be expensive. A sort of BEAMant colony could be built. Make a caste system, with workers a queen, maids, anything. I suggest that we could have each robot have a number ID or something that would be just a series of different tones (like your telephone numbers) and when a specific task is needed the "boss" could call up that number then the corresponding robot would follow the commands givien. That would probably have to have some kind of processor but it was just a thought.
On the above ID number it might be easier to have certain robots oon a certain frequency and have one main frequency for other things.
This would be a hard and probably expensive project, but it would be well worth the effort.
Win a LAPTOP Computer and get your FREE E-mail Account at http://mail.chek.com
6773 Sat, 16 Oct 1999 13:40:27 -0700 [alt-beam] Quasi uCore "'beam@sgiblab.sgi.com'" Wilf Rigter
Hello again,
Here's another bit of circuit magic, this time a microcore design including
motor drivers that uses only non-inverting buffers like the AC/HC 245, 241
or 244 chips. The Quasi uCore (QuCore) is the first microcore design that
does not require a 74xx14 or equal Schmitt trigger. When used with the AC
version, it can directly drive a BG micro type gear motor, which provides in
a single chip, the "almost complete" microcore 2 motor / 4 legged walker.
The secret is the use of non-inverting buffers with feedback capacitors to
simulate Schmitt triggers. Like it's microcore predecessor, this circuit
will saturate and for now requires manual pulse neutralizing to start a
single process by grounding one of the pull-up resistors at one of the
QuCore stage inputs. Like a microcore, the pulses are non-overlapping. This
is very useful for controlling a 2 motor 4 legged walker but also the two
motors of a single leg of a hexapod which require the typical leg motion of
UP, FORWARDS, DOWN, BACKWARDS. Like the microcore, the duration of each
pulse can be independently adjusted. Unlike the microcore, two stages use
ground and two stages use +V as reference for their input resistors. Also
unlike the micro core one output pair is active low and one pair is active
high. Anyway it is a unique design and may yet play a role in the evolution
of beam bots.
enjoy
Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
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