Can some gadget gurus check me on this? I hooked up an old cyclometer as a cadence meter by setting the wheel circumference to 1667 and display to kph, so I can read cadence as the speed times ten. The magic number came from a little scribbling, and if I'm right it's universal and spot on. If I'm not, hopefully someone will tell me.
I'm sure it's been done frequently, as simple and inexpensive as it is, but a quick search only turned up a thread where someone couldn't make his sensor work or something like that. Anyone know off the top of their head?