Subject:
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Re: Identify a zig
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Newsgroups:
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lugnet.org.us.laflrc
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Date:
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Tue, 11 Oct 2005 18:27:40 GMT
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Viewed:
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6324 times
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On Tue, October 11, 2005 12:33 pm, Brian Davis wrote:
> In lugnet.org.us.laflrc, Kevin L. Clague wrote:
>
> > Is it considered cheating if the robot has the
> > course memorized before the first run?
Actually, I think if someone could design a robot that would "appear" to follow a
memorized line, that would be encouraged, because it's all about advancing robotics.
However, wouldn't that be like going though a line-maze, without looking at the
line? I think it would be tough.
> Probably, but (a) the organizers have said they would use the same course,
> (b) the "zig zag" portion is a very specific barrier. While memorizing the
> course ahead of time might not be the intent, in the event description they
> encourage folks to try to "smooth out" the zig-zag, and mention some specific
> dimensions of it.
Here's a picture of one of the past courses...
http://www.chibots.org/contests/may2004/pictures/DSCN3660-tb.html
> To that end, Steve, I've been thinking about the problem myself. On way
> would be to have the robot detect any turn sharper than 90-deg - isn't the
> zig-zag the only place where that occurs on the Chibots course?
The problem is that once the robot has passed the sharper-than-90-deg turn, it's
heading off into who-knows-where.
But, earlier I realized, once it passes a place where it's seen a sharp turn, if it
loses the line, it just needs to make a big, sweeping turn towards the known line
direction. In the above course, the robot will be headed to the right of the
zig-zag. In this year's course, it will be headed to the left...
So, for the most part, I can just add:
if either outside sensor saw line (within XXms)
and the middle sensor saw line (within XXms)
and no sensors currently see the line,
turn right, slowly
> Someday I'll worry more about this. I still have to get the &*^% line maze
> robot issue solved. It will now memorize the maze, but refuses to make good
> right turns while solving it (and some other rather funky stuff... sigh...).
Tough, with three sensors...
Steve
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Message has 1 Reply:
 | | Re: Identify a zig
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| (...) True, but this is not what I was thinking of. If you could follow the line, and correlate it with the map you have, you could realize that you were approaching the zig-zag, and just go straight..... Kev (21 years ago, 11-Oct-05, to lugnet.org.us.laflrc)
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Message is in Reply To:
| | Re: Identify a zig
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| (...) Probably, but (a) the organizers have said they would use the same course, (b) the "zig zag" portion is a very specific barrier. While memorizing the course ahead of time might not be the intent, in the event description they encourage folks (...) (21 years ago, 11-Oct-05, to lugnet.org.us.laflrc)
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