Subject:
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Re: Video Clips from Robothon
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Newsgroups:
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lugnet.org.us.smart
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Date:
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Sat, 14 Oct 2006 18:15:20 GMT
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Viewed:
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14379 times
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In lugnet.org.us.smart, Gus Jansson wrote:
> Hi Folks,
>
> Today I noticed that Shane put some BrickHeap clips up on YouTube. Thank you
> Shane! These are excellent.
>
> <http://www.youtube.com/profile?user=shanebdavis>
>
> BTW, in case you were not there. I was on the dark gray team that made the
> robot using the NXT. Our robot was not the winning robot but I would still say
> that using the NXT for this type of event was the right decision. The NXT with
> the new motors made putting together a compact reliable driving base almost
> trivial. This left more time for us to come up with the mechanics for the crate
> gripper. After some team brainstorming we came up with a design that secured
> the crates by their feet from the inside. It actually worked pretty well!
>
> Here are some clips from the Line Maze event on Sunday:
>
> <http://www.davehylands.com/Robotics/Line-Maze-2006/>
>
> This was my fourth attempt to compete in SRS Line Maze event and the third time
> I won. My robot last year, Alegomazer 3, was pretty much a disaster except that
> I learned a lot which I was able to apply to Alegomazer 4.
>
> One of these days I plan to make a complete write-up on this robot but until
> then, here are some highlights:
>
> RCX based running BrickOS.
>
> Programmed in C, almost 2000 lines of code counting all the comments, split into
> three files for the three main program functions, ui, driver, and navigator.
>
> Two light sensors which not only have to track the 1/4 inch wide black line but
> also had to detect side paths and dead-ends (the line just ends).
>
> One rotation sensor that is driven by a differential located between the drive
> wheels. Rotation sensor used to measure distance of line segments as well as to
> make sure that all turns are in place, i.e. while turning the rotation sensor is
> monitored and program tries to keep it fixed in place.
>
> The route analysis code finds the fastest path, as compared to just the shortest
> path, to a destination. While exploring, the destination will be known
> unexplored paths, otherwise the destination will be the finish circle.
>
> Enjoy!
> Gus
Thanks for posting the videos, Shane, and for pointing them out to us, Gus!
And congratulations, Gus! Your line-maze solving robot is pure genius. It was
amazing to watch! :-) What's really cool about this competition is that it's
meant for general purpose robots. All the other entries were of the sheet-metal
variety, with no restrictions on the processor, memory, number of sensors, etc.
that are used. The fact that you've won (and by a huge margin!) shows both how
useful LEGO robotics is, and how awesome your building and programming skills
are!
--
David Schilling
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Message is in Reply To:
 | | Video Clips from Robothon
|
| Hi Folks, Today I noticed that Shane put some BrickHeap clips up on YouTube. Thank you Shane! These are excellent. (URL) BTW, in case you were not there. I was on the dark gray team that made the robot using the NXT. Our robot was not the winning (...) (20 years ago, 12-Oct-06, to lugnet.org.us.smart)
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