Subject:
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Re: Get 8 Outputs from RCX: A Pure-Lego Solution (fwd)
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 11 Mar 1999 03:50:37 GMT
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Original-From:
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Jim Choate <ravage@einstein.ssz.%spamcake%com>
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Viewed:
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1235 times
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----- Forwarded message from Hao-yang Wang -----
From: "Hao-yang Wang" <hywang@pobox.com>
Subject: Re: Get 8 Outputs from RCX: A Pure-Lego Solution
Date: Thu, 11 Mar 1999 03:35:13 GMT
Dave Baum writes:
> I'm not sure if the 4-way would work, but it it did you could put a 4 way
> on each of the outputs of the first 4-way, yielding a 16 way splitter. Of
> course this would require 10 polarity switches.
This is a great idea, and it pushes the number of outputs up to 32: We connect
two 16-way splitter to RCX, and use one direction of the controlling motor for
both the "first-level" splitters and the other direction for all the eight
second-level splitters.
----- End of forwarded message from Hao-yang Wang -----
This idea sounds cool but it has two drawbacks, the time to impliment a
directive goes up with each level of splitting and the amount of torque
the motor needs to drive goes up as well. If your application can
absorb this delay this is fine but a moving robot that interacts with
its environment is going to crash and burn at some point because it can't
respond fast enough. As to the torque, at some point the motors and the
torque are going to exceed mechanical strength and something either can't
move because it's too heavy or else shafts twist because they can't handle
the torque.
____________________________________________________________________
The trouble with acting according to your conscience is that
once you start doing it, nobody can trust you any more.
Alexis A. Gilliland
The Armadillo Group ,::////;::-. James Choate
Austin, Tx /:'///// ``::>/|/ ravage@ssz.com
www.ssz.com .', |||| `/( e\ 512-451-7087
-====~~mm-'`-```-mm --'-
--------------------------------------------------------------------
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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