Alt-BEAM Archive

Message #06132



To: beam@sgiblab.sgi.com
From: jester96beam@iname.com
Date: Fri, 17 Sep 1999 21:25:40 -0400 (EDT)
Subject: [alt-beam] I have OTUs


I have two OTUs that I no longer need. Anybody want them? They are the same type that I have seen in many BEAM bot's, not the crappy ones that don't do anyone any good.

What I really need is a pair of servos, but give me your best offer.

If you're interested please e-mail me privately.

Chris

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6133 Fri, 17 Sep 1999 19:19:39 PDT [alt-beam] 3 motor bicore walker beam@sgiblab.sgi.com "grant mckee" I can't really think of anything inspiring to say so a question is the next
best thing (or nothing at all but where would that get us?)

I have built a few walkers and have noticed that a master slave bicore seems
to be more elegant then a microcore, nothing wrong with microcore but I have
better exp with bicore.

ok I have already made up a 3 motor bicore with a reverser and breadboarded
it, thats no problem. Heres the question how many motors could the
master-slave bicore architexture be used for, not on a worm or lamprey but a
walker, Mark t used somthing like a microcore for his spyder I heard, or
maybe somthing eles? I know there is not too much of a point in building
another spyder, high power consumption, i would assume very hard to tune, 8
motors is quite a load to carry, restoring force nightmare and adding
sensors yikes, but one thing it does have going for it is it is impressive.
5 motor walker with bicores? or does a bicore lose its elegance as the
number of motors increase? might be fun to try to control bicores with a
stamp or processor instead of hardwiring it perhaps a comparison?

and another question has bothered me how old is Wilf R I mean he was
designing circuits when my dad was my age, oh oops you don't have to answer
that Wilf just my monkey curiosity thats all wrong way; Eoph>


Sincerly confused.. uurrr nevermind


sorry if this is to weird, been feeling odd latley

mmmm Bicores

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6134 Fri, 17 Sep 1999 23:10:00 -0700 [alt-beam] Re: 3 motor bicore walker beam@sgiblab.sgi.com Darrell Johnson grant mckee wrote:

>
> ok I have already made up a 3 motor bicore with a reverser and breadboarded
> it, thats no problem. Heres the question how many motors could the
> master-slave bicore architexture be used for, not on a worm or lamprey but a
> walker, Mark t used somthing like a microcore for his spyder I heard, or
> maybe somthing eles?


well, I believe that Dave's new Scoutwalker uses bicores to drive 4
motors.. Also I believe that Ian has a 4 motor walker that uses
bicores.. Can't think of anyone else offhand.. maybe Richard Piotter, I
think...

not sure if it would work fot a 5 motor walker.. wouldn't bet on it..
More motors?? Bicores might be a bit too chaotic to give useful
results.


Darrell

_______________________________
BICOREEOS..they're BEAMtastic!!
http://home.pacbell.net/wundoba



6135 Wed, 18 Aug 1999 19:19:05 -0500 [alt-beam] Need some info "Phillip A. Ryals" When I first got into BEAM, I came across a site that explained it really
well. Not that there aren't others, but this was struck me as unique.

I was wondering if anyone could point me to the URL. I've looked at every
link page I can find, but just can't seem to run across it again.

The main thing I remember is that it had explanations of the circuits, but
with small animated gifs showing the basic movements in each circuit. (ie,
little pictures with "LED" dots lighting up each time a part was energized)
Anyway, it gave me a good idea of what was going on in the "gait" area.

I'm still fairly new, so I'd probably benefit from reading it again... if I
ever find it. :)



Anyone know what I'm talking about?



Thanks tons,
Phillip


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