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the reason our team didnt want to use suction cups is that they are very finiky about their attatching surface...
dust, scratches, oils, moisture in the air all have an effect on how well they grip (or dont grip) the surface.
also: for a suction cup to operate properly the force on them has to be perpendicular to the surface in 2 directions.
when a robot hits it, it will be from the side.
we didnt think they would be a focused subsystem for our bot...
but good luck.
my 2 cents.
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