Let's build a real working Starwars BB8 droid by only using household materials and Arduino! (No 3D Printers! No CNCs! No Mills!) Full-Tutorial: http://www.instructables.com/id/DIY-Life-Size-Phone-Controlled-BB8-Droid/ The droid can be controlled by any smartphone. I also talks as well. The makeshift design had cut the overall expenses to $120, making it cheaper than the Sphero toy.

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