I am totally unfamiliar with the timers library, maybe that is the root of my problem. One of your sketch comments (// output OC0A pin 12 (D6)) is confusing if the output is intended for digital pin 12 or 6?? I am just trying to obtain the output and feed it to a loop, and then be able to detect it on another loop, on another input pin. Can you assist me? Thanks for any direction.