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Sphero 2.0 Robotic Ball is 2x faster, 3x brighter, and smarter than ever. Sphero 2.0 Robotic Ball ro..
$200.00
Single wheeled robots are extremely difficult to keep balanced due to the single point of contact with the ground. It is easier to use a spherical wheel rather than a typical disc wheel, as the robot can move in any direction along the sphere.