- on Hobby & Modelling
- Published in issue 7/2006 on page 0
Bicycle Speedometer with Hub Dynamo
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 mounted on the front fork. A small magnet is attached to the spokes so that the transmitter sends out a pulse for every revolution of the wheel (as long as everything has been fitted properly).