At 03:04 PM 8/19/97 -0400, you wrote: >Question: > given the above information does this sound like the proper way to approach >this project or is there a better / easier or more efficient way of >attaining my goal. Maybe I have missed something obvious? The most reliable method IMHO is a set of up/down counters with PIC reading these via I2C. Its a bit problematic trying to debug a software based quadrature encoder etc... Rgds mike Perth, Western Australia