[Robotgroup] Robot Challenge Help Needed

[Gray Mack]

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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