MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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I guess I can help.

It uses an arduino based bluetooth joystick.
By the way, I did not wanted that, so I adapted another arduino code for using the Android RC car bluetooth app. See my comment below in the thread.