Breath powered USB charger.

Nothing makes me happier than seeing watts generated by people. This here is a USB charger capable of harnessing the expansion and contraction of the chest of a breathing geek. It’s a little rough around the edges… but the concept is cool.

I’d love to see one made that attaches a shoe to a person’s belt and charges while walking.

Build one yourself. Here’s a step by step guide that a 10 year old child could follow.

Breathing charges your phone.

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