This article was published on August 6, 2016

This DIY phone charger only requires running water


If you thought Bear Grylls was cool, you’re gonna love YouTuber Thomas Kim. Kim is a lot like Grylls in that he’s fully capable of escaping a jam while in the wild (like trying to catch Pikachu with 1 percent battery) all while drinking at least 100 percent less urine and avoiding elephant dung entirely — or so it seems.

Kim also cooked up a decidedly low-tech way to charge an iPhone by harnessing a nearby stream to power a generator.

The concept is the same used by hydroelectric dams worldwide, only on a much smaller scale. Essentially, the water turns a water wheel which then creates power to store in a generator. When Kim plugs his iPhone in, the power is then used to charge it. Bam, science!

Kim’s creation uses “plastic bottles, disposable platters 3 Phase stepping motor, [and a] rectifier circuit.”  I can’t say that I know what most of those parts are, but Kim sure seems to understand them and that’s all that matters.

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via Gizmodo

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