Subject:
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Annelus
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 4 Oct 2006 21:54:45 GMT
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Highlighted:
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(details)
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Hello everyone, I have finally finished a rather large project that has occupied
my time for some months now. I started building Annelus when I discovered
Rotundus and decided to emulate the creation. What I
came up with was a month long effort built inside of an 11” clear ferret ball.
Annelus uses motormounts on the outside of the ball to shift a pendulum and thus
displace his center of gravity, causing movement as demonstrated in the diagram.
Some problems presented were making sure that the cog was not above the axle,
and therefore unmovable by the robot, and drilling each PCV axle to match the
precise holes. I preferred the original version of Annelus which was built
entirely inside of the ball, but could not move (which meant I kept upping the
gear ratios for more power) because I had the cog too high. Annelus participated
in the robotics project in my local 4-H county fair and won Grand Champion
overall; he also participated in a local 4-H window display in Oct. 2006.
I am welcome to comments and critiscms, and especially ideas. If anyone has a
better idea for the ball, please let me know. Annelus can only handle wood,
tile, and concrete surfaces because of the lack of power and the ridges on his
ball. This does not live up to my expectations for him as I would prefer some
better mobility. Thanks for looking,
Chris Givan
Brickshelf
MOC Page
A (blessedly) short comparsion video comparing Annelus to Rotundus (please,
forgive me for it...I beg you)
http://video.google.com/videoplay?docid=8388899187136974712&q=annelus
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