Remember the yo-yo craze back in the 90s? You couldn't walk down the street without tripping over some kids yo-yo (probably mine) doing a botched walk the dog trick or one of the many other hundred gravity defying yo-yo tricks. The yo-yo's been lying low for the past few years, but if this concept gets the go ahead, the yo-yo will be making an impressive and exciting comeback.
So how can a yo-yo charge you iPhone I hear you say? The concept is simple and fun - yo-yo and charge. The Yo-yo Charger has a LI battery cell in it that gets its power from your yo-yoing. Although I imagine boredom kicks in and the novelty wears thin after a while. The concept of a yo-yoing charger gets a little more complicated when you try and work out the probability of a yo-yo actually being able to generate enough power to charge an iPhone. Me and physics don't get along, so I couldn't tell you.
Its creators really thought they'd broken new ground and were on to something until someone broke it to them they'd been beaten to the punch 2 years ago by a yo-yo powered MP3 player.
[via Gadget Space]
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