A Zumo facing another robot in a sumo ring.
7. Example project: Border-detecting sumo robot
7.a. Adding QTR reflectance sensors
Adding sensors to the Zumo allows
it to sense and react to its
surroundings.
In
a
sumo
competition where two robots try to
push each other out of a circular
ring, it is important for a robot to be
able to detect the border of the ring
so it can avoid driving over the
edge. Since standard robot sumo
rings are colored black with a white
border around the edge, infrared
reflectance sensors like our
[http://www.pololu.com/catalog/
are great for this
purpose.
For border detection, it is sufficient to mount two reflectance sensors to the front of the Zumo, one on each
side. This can easily be done by soldering two 1×3-pin female headers under the left and right corners of
the front expansion area of the Zumo for two
[http://www.pololu.com/catalog/product/959]
or
[http://www.pololu.com/catalog/product/958]
sensors to plug into, as shown in the picture below.
For other applications like line-following and maze-solving, you might want to add even more reflectance sensors
to your Zumo. The following diagram shows locations where QTR sensors can be mounted to the Zumo Shield.
Pololu Zumo Shield for Arduino User's Guide
© 2001–2012 Pololu Corporation
7. Example project: Border-detecting sumo robot
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