A 15-year-old student from Philippines has invented a device that harnesses the energy of your steps to make electricity.
Soon you’ll be able to charge your mobile phone with your shoes! Angelo Casimiro has summited his project to the 2014 Google Science Fair and he has shared his tips on how to make a portable device to charge USB gadgets over at TreeHugger. All you need is a generic USB powerbank, 6 piezoelectric transducers, 4 rectifier diodes, hookup wire (at least 12″), an old pair of shoes, and adhesive tape! Follow his step by step guide here.