Tony Smith wrote: > Calculation time between pulses is pretty easy. A bike wheel is a bit over > 2000mm in diameter, say 2100mm. Assume a top speed of 100km/h. Wow! You ride BIG bikes! -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist