The idea for this circuit came when the author had problems with the wireless speedometer on his bicycle. Such a device consists of two parts: the cycle computer itself and a transmitter that is ...

The hassle with biking gadgets is they draw energy. Even if you’re running everything off your phone (Strava, music, GPS, video, the occasional pic, message, or phone call) the serious worry is that ...

Remember those "bottle"-type dynamos that rubbed against the side of your bike tire in order to power the lights? Well, they've gotten a high-tech makeover, in the form of the fork-mounted CadenceX ...

If you want to charge your gadgets while you ride your bike, then the best way has been to think ahead and get the bike fitted with a dynamo hub when you buy it. Now, there's another option: a ...

BioLogic has revealed a ReeCharge Dynamo kit capable of pedal powering any gadget with a micro-USB input. “Millions of bicycles are already equipped with dynamo hubs that can generate green power ...

Earlier this month Dahon released details on its Ios bikes with embedded electronics, powered by hub dynamo. The company has now revealed the BioLogic FreeCharge device will be available as a ...

The “Magnic,” (L) and the Gotham Bicycle Defense light. In a place like Portland where darkness covers commutes for several months a year, two projects currently seeking funding via Kickstarter — a ...

You can see how "Magnic Light iC" generates electricity and lights the light from the following movie. "Everyone said that there is no dynamo that can generate electricity without touching the tires." ...