Alt-BEAM Archive
Message #04657
To: beam@sgiblab.sgi.com
From: Evan Dudzik evandude@yahoo.com
Date: Sat, 19 Jun 1999 18:19:03 -0700 (PDT)
Subject: [alt-beam] Re: Some questions...
--- BigRed193@aol.com wrote:
> Could someone explain the concept behing the "Robot
> Jurassic Park" - I've
> heard it referenced a lot, but have never really
> heard a good decription of
> what it is and what its function in.
that is just a little table with walls to keep the robots from falling
off the sides, where people just put all of their 'bots during the day,
rather than maybe keep them cooped up in a dark spot so they won't run
around and get damaged.
> Also, I am
> wondering if anyone has
> considered using the "muscle wires" in a beam robot
> - they seem as if the
> would lend themselves to a solar walker...
Yeah, they sound too good to be true: Small, lightweight, strong, etc.
Well, they are. They eat even batteries like candy. They are not
good for solar power especially, because solar circuits are not usually
designed to power high-current loads like that, and if you used a
separate driver, or in this case likely more than one, the larger
muscle wires could fry a little H-bridge to peices, and would require
like 6 '245s to drive, they suck like 1500mA. In other words, they are
inefficient. If you ran them off a good enough driver, they still
would only move a little bit, and far between- the amount of power that
would run an efficient motor for 10 seconds may only make the larger
wires twitch a bit for less than half a second. But get a second
opinion, ok? because I am no expert on muscle wires.
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