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by bitwize 944 days ago
> Super cool that the motors can be used for things other than moving the vehicle. It reminds me of how ESCs for RC vehicles use the motors to generate audible chirp tones to indicate status.

> Motors are multi-purpose devices!

In WALL-E, one of the robots following the title character, lacking any audio output, spins its motors at different rates to play the tune from Hello, Dolly! that it had learned from WALL-E.

See also the Floppotron: https://www.youtube.com/watch?v=oGfkPCZYfFw