Subject:
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Re: NXT BrickSorter - Sorting bricks with a HiTechnic colour sensor.
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Sat, 7 Apr 2007 12:10:11 GMT
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Highlighted:
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(details)
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19215 times
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In lugnet.robotics.nxt, Dave Astolfo wrote:
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What better idea to come up with to test the HiTechnic colour sensor then to
build a LEGO brick sorter. So, that’s what I did. After quickly learning
that the sensor does not read colour from a distance (in my excitement I
forgot to read the documentation), and creating a room navigating robot (see
CT1 on my site), I decided to test its brick sorting abilities… Ok, the
sensor only has to tell the NXT what colour it sees, the robot has to do the
rest. Anyway, for details a video and more pictures, have a look at my site
at: www.plastibots.com
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Cool stuff, and a very elegant design. I was wondering if there is a reason you
don’t have cups all the way around the sorter? Have you tried to put the color
sensor inside a housing to cut down on ambient light? And the real question the
people want to know: can it tell the difference between Grey and Bley?
I started building a brick sorter (sort by size, but colorblind) awhile back based on the RCX. I
barely got the caliper gearing worked out to give sufficient encoder resolution
to reliably distinguish certain block types, so identifying the blocks without
moving them anywhere was as far as I got at the time. I’ve been thinking that
an NXT-based solution would have much better resolution. Combined with your
color sorter, it could be a real timesaver!
Spotlighted!!
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