DinoFab ~~ Stepper Motor Powered Bike Light - Build your own power source with... - The Diigo Meta page

• 07 Oct 09
  

  Steve Dickie

  First there's the stepper motor. Most older printers will have one or two stepper motors inside them. How do you know if it's a stepper motor? It will have 4, 5 or  6 wires coming out of it. They usually have some kind of gear or drive wheel on one end. It doesn't need to be big to produce the amount of electricity we need. Smaller is actually better in this case.
  READ>>More about generating electricity with stepper motors<<READ
  
  Rubber drive wheel. You will need some kind of rubber wheel to mount on the stepper motor, unless it has one. I found that the rubber grommet selection at the hardware store proved to be a good place to find a suitable wheel. You'll want one larger than the diameter of the motor. This will allow the motor to be mounted near the wheel with the rubber drive wheel touching the bicycle wheel's rim. See photos 1, 2 & 3 below. The hole in the center of this wheel should be small enough so as to be pressed on to the existing gear that's on the stepper motor and epoxied in place.

  bike generator electronics

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