Angelo Casimiro, a 15-year-old student from the Philippines did a little science experiment to charge smartphones or any portable device by simply walking.
Using piezoelectric transducers, Angelo Casimiro came up with a system that can harness the energy produced with each step made. He developed this idea and turned it into a project that he submitted at the 2014 Google Science Fair.
Basically, he attached a powerbank to some old sneakers together with diodes and transducers to come up with a pair of “smart shoes” that has the energy needed to power up a smartphone. There’s a list of everything he used if you want to try it out yourself. You can also watch the video for a more detailed explanation on how it works.
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