Bike electronics have changed the way we ride -- and how we share our rides. Take helmet cams, for example. Helmet-mounted or chest-mounted bike cameras let you record every thrilling second of your epic ride and then share your cycling video with your friends or with the whole world via YouTube. Camera accessories such as spare batteries and camera mounts keep you in the action. Other electronics, like cadence sensors, let you monitor your cadence with your Garmin.
