Alt-BEAM Archive

Message #11398



To: beam@sgiblab.sgi.com
From: BUDSCOTT@aol.com
Date: Mon, 6 Mar 2000 16:20:04 EST
Subject: [alt-beam] MicroCore vs. BiCore


Okay, thankx Bruce for answering my question bout the Bicore Microcore
situation, but i got more Q's to be A'ed. Let me start out by defining what i
believe each circuit does, this way you can correct me.

Bicore - Ocillates (+) and (-). Master/Slave howevermany needed sets of two,
slave syncs to the Ocillation of the master? you can link as many slaves as
you want

Microcore - Ocillates (+) and (-) according to motor feedback (how can this
be?)? No master/slave can be set only one set of however many needed, 4 Nvs
(Nu? whatever) create walking motion, occilates between the four.

Please correct me, I'm not an expert on IC's (I'm only in high school after
all). So then why is the bicore the seemingly perfered circuit, i see that it
is quite flexible and understand that the microcore cant move multiple motors
at once, but wouldn't the microcore be better if it truely gets motor feed
back? And also, how does the microcore recieve this feed back, is it because
of current drain due to resistance to the shaft? I'm quite confused here, if
you could even just point me to a web page it'd be greatly appreciated!

-Spencer



11399 Mon, 6 Mar 2000 13:23:32 -0800 [alt-beam] Re: lobster "Les Davis"
content-transfer-encoding: quoted-printable


If you want to it be more able in an environment, give it more sensors, a=
nts for example have touch sensors, =

light, temperature, and it can tell if its legs are stuck, which is basic=
ally the goal for most of our walkers and such, but I am curious how insect=
s can know where to go back to like if a pile of sugar is on the ground, he=
will tell his little ant friends and they will go to it, same with bees. I=
haven't seen my photovores telling each other where the sun is lately

Steve

Ants leave a scent trail which allows the others to find the route to the=
sugar. Bees though, are really neat, they do a little dance.... When he =
(they're all he's) gets back to the hive, the individual bee that knows whe=
re the good flowers are does a dance. The dance consists of circles and bo=
dy shakes that relate to the direction of the sun and the number of left tu=
rns and right turns relative to the sun. All the drones that are watching =
this dance are usually able to find the flowers that the original drone is =
dancing about.

Pretty cool, but we're a long way from getting any of our bots to do that=
.


Les


content-transfer-encoding: quoted-printable



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If you want to it be more able in an environment, give it more senso=
rs, =

ants for example have touch sensors,
light, temperature, and it can t=
ell =

if its legs are stuck, which is basically the goal for most of our walker=
s and =

such, but I am curious how insects can know where to go back to like if a=
pile =

of sugar is on the ground, he will tell his little ant friends and they w=
ill =

go to it, same with bees. I haven't seen my photovores telling each other=
=

where the sun is lately

Steve

 

Ants leave a scent trail which allows the others to find the route t=
o the =

sugar.  Bees though, are really neat, they do a little dance....&nbs=
p; =

When he (they're all he's) gets back to the hive, the individual bee=
that =

knows where the good flowers are does a dance.  The dance consists o=
f =

circles and body shakes that relate to the direction of the sun and the n=
umber =

of left turns and right turns relative to the sun.  All the drones t=
hat =

are watching this dance are usually able to find the flowers that the ori=
ginal =

drone is dancing about.

 

Pretty cool, but we're a long way from getting any of our bots to do=
=

that.

 

 

Les




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