Can someone help me figuring out wich sensor or device would be best
to track the (rotation) speed of a fixed bicycle? The speed data is
then suposed to control the triggering and speed of some movie clips
with Max/MSP/Jitter in osX, using some analogue to digital converter,
wich, by the way, I would apreciate some advices about.
I've worked with sensors before, like flex, light, pressure and
others, but none of these would be of any use for this project.