Sphero RVR + littleBits Topper Kit combines the best of Sphero with the best of littleBits in an easy and approachable kit that allows you to fully utilize RVRs onboard capabilities with littleBits adaptability to create your own inventions. 
Don’t forget you can also use your RVR + littleBits Topper in Sphero’s Global Challenge!
Sphero Topper. Type: Multi erector set, Interactive
Purchase one kit per RVR and allow your groups to combine both programming with engineering design principles
Utilize RVRs onboard power source to power your littleBits invention and make it mobile with RVRs all terrain treads
Program RVRs IR sensors to interact with the littleBits IR remote trigger to create mazes, gates and other inventions
Connect littleBits’ newest bit - micro:bit adapter to program both littleBits and RVR in the same platform - Microsoft MakeCode or micro:bit python editor
Promotes collaboration - assign one group the programming and another engineering and see what the can create together