On Sat, 2009-08-15 at 19:22 -0400, solarwind wrote:
> I just thought of another idea:
> 
> Rip open an old mouse and extract the phototransistor and infrared
> LED. Mount each on the two forks of the bicycle so that they face each
> other. When the spoke gets in the way, the light to the
> phototransistor gets cut off and can be detected by the
> microcontroller.
> 
> Would this work?

Yes, for a short while. Optical is never a good idea IMHO for something
like this because it will get dirty (just one puddle would be enough)
and stop working.

TTYL

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