DIY: Bike Powered USB Charger – Blancer.com Tutorials and projects

Here’s a perfect project for the upcoming summer; a bike powered USB charger to keep all of your gadgets charged while you ride.

The USB bike generator works by placing a rotating wheel against the rim of the rear wheel with a heavy spring. The attached wheel turns a stepper motor to generate an AC current that is changed to DC via a rectifier (which is nothing more than 4 diodes). The DC power is then feed into a USB car adapter to charge your gadgets.

It’s a really simple project that produces great results, best of all, it’s really cheap to build and put together.

[Link to USB Bike Generator]