Got it. We will try running over the location to see if it's common to all
mats and get back to you. Checking under the mat is a great idea.
6th Grade Science Teacher
First Lego League Robotics Coach- CCMS Team 31516
Carroll County Middle School
Carroll County Public Schools
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On Tue, Jan 5, 2021 at 10:59 AM Skip Morrow <[log in to unmask]> wrote:
> It's the area in the "southern corridor", just west of the pullup bar.
> THere's a tree printed on the mat right there. That's where our robot
> shimmies to the side each time it passes over it. It feels smooth and like
> the rest of the mat, but for some reason, just right there the robot can't
> drive straight. I think I will try sanding the table under it.
> As for trying to fix it with programming, it isn't consistent enough to
> try anything like that.
> Thanks for the ideas though!
> Coach Skip Morrow
> On Tue, Jan 5, 2021 at 10:24 AM Mark Nottingham <[log in to unmask]>
>> I wonder if this spot is consistent on all mats. Sounds like a pothole.
>> Could the color in that location be causing it? We have 3 teams at my
>> school, 3 mats. We could try running over the same area to see. On the plus
>> side, programming to adjust to this spot would work and since your
>> competition rounds are done on your home mat, well you have home field
>> advantage. Does your team feel comfortable sharing an image of the spot in
>> Mark Nottingham
>> 6th Grade Science Teacher
>> First Lego League Robotics Coach- CCMS Team 31516
>> Carroll County Middle School
>> Carroll County Public Schools
>> [log in to unmask]
>> On Mon, Jan 4, 2021 at 8:44 PM Skip Morrow <[log in to unmask]> wrote:
>>> *CAUTION: *This email originated from outside of JMU. Do not click
>>> links or open attachments unless you recognize the sender and know the
>>> content is safe.
>>> VA-DC Coaches. Hoping someone can help us.
>>> Our robot normally runs very straight. But lately we have been noticing
>>> a couple of spots on the mat where our robot will almost always do a short
>>> jog to the left of about one cm. The spots are very specific and the
>>> sidestep happens with near 100% regularity. Everywhere else on the mat, the
>>> robot drives perfectly. We have tried cleaning the wheels many times. The
>>> mat seems clean, but there are some wear marks in the problem areas. It
>>> sure doesn't feel greasy or slippery or tacky in those specific areas. I am
>>> at a loss. I am hesitant to try cleaning the mat with anything, but I'd
>>> like to hear if any of you guys have any ideas.
>>> To be clear, it is a very specific spot. We can program in a move tank
>>> block, 10 revolutions, and aim the robot to pass over the spot. No matter
>>> how far away we are at the start, it will shift at that same spot.
>>> Coach Skip Morrow
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