[Robotgroup] Robot Challenge Help Needed

[Paul Atkinson]

Gray,

Thanks for the info. The mini-sumo chassis I've seen can handle the incline,
but I'm less sure about them going over bumps. Most have an adjustable
scoop/scraper that can be raised (manually, before the event) to clear small
obstacles. Most have smooth tire surfaces and may have difficulty with a
significant bump. A robot built specifically for this event obviously should
be able to handle bumps and discontinuities.

I noticed that many contests have very specific rules about the starting and
ending areas. Things like "the robot must be entirely contained in the
starting/ending box for the contest to start/end" or "no portion of the
robot may extend beyond an imaginary line projected vertically from all
sides of the starting box". I expect there are reasons for stating things so
carefully, so you may want to consider that eventually.

Paul

On Jan 8, 2008 12:22 AM, Betty Dingus <bettydingus at mac.com> wrote:

> I think I have a Tab Books Sumo also, taunting me from the closet shelf.
>
> Betty
>
> On Jan 7, 2008, at 9:21 PM, Paul Atkinson wrote:
>
> > The best info I can find says the Tab Books Sumo is 4" wide and 5"
> > long,
> > FWIW.
> >
> > Paul
> >
> > On Jan 7, 2008 9:05 PM, Paul Atkinson <pmatkinson at gmail.com> wrote:
> >
> >> Gray,
> >>
> >> I think if you accommodated the mini sumo form factor and the
> >> RC-40 that
> >> Eric mentioned, that would be a good start. Tab Books had a "Sumo-
> >> bot" which
> >> is slightly larger than sumo should be. I've got 2 of them
> >> somewhere that I
> >> could compete with if we can find dimensions someplace.
> >>
> >>
> >> Mini-sumo is 10cm x 10cm or approx 4" square with no height limit.
> >> Standard "Japanese" sumo class is 20cm x 20 cm or approx 7.8"
> >> square with
> >> no height limit. Something in the 6" square range would let mini-
> >> sumo also
> >> run this course.
> >>
> >> Also, I sent you some questions about the competition on Friday,
> >> off list.
> >> Since I missed most of your presentation, could you oblige me and
> >> give some
> >> idea of what the contest is about?
> >>
> >> Thanks,
> >> Paul
> >>
> >>
> >> On Jan 7, 2008 5:45 PM, 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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