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World's smallest battery-free flying robot uses magnets for power. (interestingengineering.com)

submitted 2 weeks ago by [email protected] to c/[email protected]

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[–] [email protected] 3 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

It almost looks like one of those toy helicopters that you launch by just lifting it up a coiled rod so it spins really fast.

[–] [email protected] 2 points 2 weeks ago (2 children)

Yeah, I wonder how far they can extend the magnetic fields that power them? Even if it is relatively short range, they look really cheap to make, so you could have thousands of them with sensors to scan localized areas.

[–] [email protected] 1 points 2 weeks ago

Don't give them ideas...

[–] [email protected] 1 points 2 weeks ago

If they make one that moves with radio waves, it would be really great.