Science
Bike Ground Effects or Beginner's Lighting
At the risk of walking that line between seriousness and bad puns, an underlit bike and an under-lit bike can be the difference between life and death. Almost all bicycle injuries and fatalities involving cars find a driver saying, "I never saw the cyclist." Don't trust your life to some silly little blinky -- get noticed.
Using a handful of LED's, a dead network cable and a few rechargeable AA's, we're going to get noticed: by drivers, by the more attractive other bicyclists, and possibly by the Trunk Boiz.
All while giving a complete beginner's guide to parallel circuit wiring and low power, energy efficient electronics. Yowza!
DIY Bicycle pedal battery charger - background
I'll be chronicling my adventures in designing a usable and useful power system, powered by spinning wheels. I'm only just starting out so, though it should be "finished" in a week or fifty, I'll start by outlining my ideas.
1. Neodymium magnets can be found very cheap (by America-or-wealthier standards) and same for copper wire. 32ga magnet wire coiled into tiny giants, epoxied to a PVC circle and being passed within a small brush of the B field from some magnets I've JB-Welded to the spokes, should induce enough current to rectify-ify into a phone charge pretty easily. EMF is related to the number of turns of wire, and the time rate of change of magnetic flux, so I'm still trying to reconcile coil size with efficiency.
Subscribe to Prodromic

+StumbleIt