P Dobson

Thanks Joe, Appreciate your input. I'll try FreqMeasureMulti, though I need to change my hardware set up to use the correct pins. Not quite so easy on a proper Printed circuit board that I developed.

Thank you both. That is very helpful. The eventual project behind this is to produce code for a 3 axis control loading system used on a flight simulator. I have already generated one version which works quite well but the PID servo is not quite...

I have put together a small program designed to produce a velocity vector from a slowly rotating incremental encoder. In order to get the best resolution I have got interrupt routines on all edges, both rising and falling. The falling edge...