Charge A USB Device By Breathing
This is a Do-It-Yourself project from Instructables, and it's pretty cool. rubber bands, parts from an old CD-Rom drive, and a simple circuit is the ticket to charging a device that can be charged via USB. Assembly required, of course.
A USB port only passes 5 volts, so it's not like you have to generate a lot of energy. I'm just surprised breathing is enough to generate 5 volts. If they say it works…
Via Treehugger
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By Redsave Gadgets, November 9, 2007 @ 7:15 am
Great stuff, who’d have thought such a thing was possible?
By igreenspot, April 22, 2008 @ 8:17 am
I don’t think I want to wear that, it looks uncomfortable