While on the way to dinner today, I saw a guy playing around with a yo-yo. Granted, he wasn’t one of those crazy mad skills yo-yo artists, but the reason I mention it anyway is because it reminded me of that i-Yo Yo-Yo charger I saw on the internet a while ago. Sure, it’s a really cool way to charge your portable mp3 player without electrical outlets, solar/wind power or batteries, but how often are you going to be using a yo-yo while you listen to music? With that in mind, I racked my brain trying to think of a more practical solution. This is what I came up with:
In essence, the idea is that the headphones use the energy from your head-banging motion to charge your mp3 player. Here’s a breakdown of the process: » Read the rest of this entry «

