Darrel,

From your advice I guess my quickest easiest way of making this work is with pulsein (seeings I have very little interrupt knowledge yet)

My reference to 21kph was if I use COUNT to count pulses over a 100ms period.

I will try this in the next few days, with a pulsein timeout period of about 200ms (to prevent all the other functions from slowing down too much.)

I still haven't had enough time to go over what everyone has posted. But rest-assured it is appreciated.


Thanks!