[Robotgroup] Robot Challenge Help Needed

[Don Colbath]

You could always do like that silly Japanese show where some of the doors
that are too small are solid and some are paper mache'.  What could be more
fun than crashing through walls or boinking off ones that you thought
weren't so solid.

Don
----- Original Message -----
From: "Gray Mack" <gray_mack at yahoo.com>
To: "The Robot Group Mailing List" <robotgroup at puremagic.com>
Sent: Friday, January 11, 2008 2:06 PM
Subject: Re: [Robotgroup] Robot Challenge Help Needed


Ok, now that I actually own a CR-01 which is only
slightly larger than a boebot, I need to rethink the
size of the Arena some. It would be rather difficult
for a 5.5in bot to fit through a 6in corridor. Not
impossible, but difficult with basic sensors like 2
distance testers. I think for this 1st challenge, an
extra 2-4 inches of passage width may be needed. I
dont think we would get enough participants if we
limit the bot size to 4"x4"

Also the bots are heavier than I was thinking, so
foam-board may not be strong enough, I will need to
experiment.

I had hoped an arena could be made at home in an
evening with only a ruler, razor knife, and hot glue.
building it out of wood makes it less likely that
people will make their own. And I feel it will be more
difficult for people to learn and program without the
actual arena. I guess it is possible you could put
some paper tape down on a rug and stack some books and
get a usable enough simulation that the robot would
work in the actual arena, but that does add a level of
difficulty. I might also try using a silver tarp as
the base of the arena.

Comments?

-Gray

--- Gray Mack <gray_mack at yahoo.com> wrote:

> Unless I get feedback soon about typical bots, I am
> going to make some assumptions in designing the
> challenge:
>
> bot will fit within a 6in x 6in x 6in cube
> bot can enter and traverse a 6in wide x 6in high
> corridor without getting stuck.
> bot can go over up to 1/4" bump or ledge without
> catching wheel or sensors.
> bot can travel up/down 15degree incline plane
> bot can sense a black line boundary 1/2in to 3/4in
> of
> edge of falling off the playfield.
>
> Thanks,
> Gray
>
> --- Gray Mack <gray_mack at yahoo.com> wrote:
>
> > Something I need help with is defining the size of
> > the
> > arena. I would like to do 2x2 feet or 2x3 feet.
> > I need the dimensions on a typically built bot:
> >  1. boebot with/without ping sensor attachment
> >  2. mindstorms bot
> >  3. vex bot (I can do this)
> >  4. spybotics (I can do this)
> >  5. Other common chassis?
> >
> > Will all of these likely fit within a 6" cube?
> >
> > What is the most narrow passage they could
> > realistically travel through without careful
> > steering?
> > Can they drive over a 1/8" bump? How about 1/4"?
> try
> > things like a penny, coaster, or corrugated
> > cardboard.
> >
> > Can they go up a 15degree incline like a 6"
> > cardboard
> > ramp to a 1.5" elevation like a 2x2 beam or thick
> > book?
> >
> > Thanks,
> > -Gray
> >
> >
> >
> >
>
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