web analytics

Generate Energy from Your Shoe Insoles?


Image credit: Electricity Generating Footwear / ASCAS.

Angelo Casimiro, a fifteen-year-old Philippine boy, has recently invented a smart shoe insole, which can provide enough electricity to charge small USB devices by just walking.

According to Angela’s explanation, his new invention, incorporating piezoelectric materials, is capable of generating an AC voltage when it is actuated. Some solid materials such as certain ceramics and salts exhibit can also demonstrate such effect, which was found in the late 1800s.

Here’s a video of Angelo’s entry for the 2014 Google Science Fair:

During his experiments, Angelo Casimiro identified that he was able to fully charge a 400 mAH Li-ion battery by the means of walking for eight straight continuously. If playing basketball with this smart shoe insole for two straight hours, a power bank could also be charged, even though the output was a bit faint.

If you want to produce your own electricity generating sneakers, you are kindly advised to follow the detailed instructions step by step at Angelo’s Instructables site.By doing so, you are required to get these materials ready: generic USB power bank, piezoelectric transducers, rectifier diodes, hookup wire, some adhesive, and an old pair of shoes.

In addition to Angelo’s version, there are other kinds of power-generating, in-shoe approaches. For instance, SolePower can store the energy given out in every step in walking as usable electrical power just like a hand-crank flashlight does. Another concept is focused on a technique called reverse electrowetting, which is capable of transforming the energy of metal droplets in the soles into an electrical current.

Source: Instructables