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Full-on biometric charging might still be a thing of the future, but some enterprising individuals have started working on DIY projects that use basic human activities as a source of electrical power. Take this breath-powered USB charger on Instructables, for instance.
If you're reading this, chances are you're alive and breathing. Got a USB-chargeable gadget lying around? Thanks to jmengel's guide, you can now make a device that will charge your USB-capable pieces of technology through some good old-fashioned breathing. Hey, maybe in the future we can use something like this to power our uber-cool robotic exoskeletons or something.
According to the brains behind this gadget, this proof-of-concept is currently putting out around 50mW. The currents are on the order of 25mA. The creator also said that he'll only make an enclosure for the charger once he comes up with something smaller that can put out around 500mW or more.
Needless to say, this project is a bit complicated, but if you're looking for something to keep your hands and mind busy, click on the read link below to find out how to make one for yourself.
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