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Sphero RVR littleBits Topper Kit

Sphero RVR + littleBits Topper Kit combines the best of Sphero with the best of littleBits in an easy approachable kit that allows you to fully utilise RVRs onboard capabilities with littleBits adaptability to create your own inventions. Combined together you can take RVR further by building a mechanical arm, using its onboard IR sensors to trigger a littleBits gate or use proximity sensors to ensure RVR avoids obstacles.