On Thu, Jun 09, 2016 at 01:33:50AM -0400, Richard Aiken wrote:
> Well, there is also:
> http://www.wired.com/2008/02/knee-brace-harv/#seealsocad0110d22d6d5401371dbc7005ce855
>
> A 3.5 lb knee brace that generates 5 watts from ordinary walking, without
> imposing extra effort on the wearer.

That's interesting.  I'd want a little convincing that it doesn't take
extra effort, maybe they'll send me one for free to test? ;-)

> This seems to be a formal report on a very tiny motion-capture generator (2
> cubic centimeters), that generates 117uW (not sure what the "u" means)

Usually it means "micro" in contexts where the Greek letter mu (which
looks a little like a cursive "u") can't be used.  So about 0.0001
watts.  That would make it suitable for running the most low powered
microprocessors and sensors, but not much else.

- Tim