Subject:
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Re: November 2002 SMART Meeting Notes
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Newsgroups:
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lugnet.org.us.smart
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Date:
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Sun, 1 Dec 2002 23:55:53 GMT
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Viewed:
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1892 times
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In lugnet.org.us.smart, Mark Kenworthy writes:
> In lugnet.org.us.smart, David Schilling writes:
> > For our next meeting's mini-challenge we voted to do Token Finding: Build a
> > robot that will search for a black 2x2-inch square on a table, stopping 'on'
> > the square when you find it. Make sure you don't fall off the table either!
> > I suggest people attempting this challenge consider ways to accomplish it
> > without just randomly driving around the table, hoping to find it.
>
> David - Some questions about this challenge:
>
> 1) What are the dimensions of the table we'll be using? What is the corner
> radius?
We will be using the standard tables at the library. I believe they are
about two feet wide, and approximately 6 feet long. The corner radius is
pretty tight, perhaps one inch. If you would like more accurate
measurements, please let me know, and I'll get them.
> 2) Will we be able to pick our starting location and orientation, or will we
> all use a standardized one? If standardized, please describe.
Robots will be randomly placed on the table, and in a random orientation.
(This is to discourage someone from building a 2'x6' "robot" that covers the
entire table. I know *someone* out there is considering this!) The only
constraint on starting location is that the robot will not be placed right
next to the edge if possible. (If the robot is too big, this might not be
avoidable.)
> 3) Are there any guarantees on the location of the 2x2 square? For example,
> can we assume that it won't be under the robot at the start or within a
> certain distance from the edge of the table?
Don't make any assumptions about the starting location of the square. It
will also be at a random location, and will probably be moved from one run
to another. It *might* be right at the edge of the table, or anywhere else.
But the entire square will be on the table.
> 4) Are there any restrictions on robot size?
No. But I hope that people will try to come up with interesting robot
designs, not twenty-five-base-plates-stuck-together to cover a table.
> 5) Are we restricted to one RCX?
Usually we don't restrict robots for any mini-challenge, other than it
should be all Lego, and preferably unmodified. Custom sensors are okay, as
are multiple RCX's, or other Lego computing devices. (String and rubber
bands, etc. are okay as well.) Besides being autonomous (not controlled by a
human), the one thing I'd strongly discourage is a 'tethered' robot -- one
with a wire (or infrared link) to a PC, be it for a camera, or anything
else. I know the camera might be tempting for this challenge, though, so if
someone wants to try it, go ahead. But see if you can't build a
self-contained robot as well.
> Thanks,
>
> Mark
Hope that answers everything. Please let me know if there are other
questions or if I wasn't clear.
--
David Schilling
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Message is in Reply To:
 | | Re: November 2002 SMART Meeting Notes
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| (...) David - Some questions about this challenge: 1) What are the dimensions of the table we'll be using? What is the corner radius? 2) Will we be able to pick our starting location and orientation, or will we all use a standardized one? If (...) (22 years ago, 1-Dec-02, to lugnet.org.us.smart)
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