In-Reply-To: "David E. Olson" wrote: > a reasonable period to duty ratio. Problem is that lowest values are a 255 > period and 127 duty, I get around 230Hz. I'm not using the full 10 bits on > the PWM since I can't get the period low enough to make a difference. The As far as I know all you can do is run the whole PIC at a lower frequency. It would need to be 10 times slower than you are running it at present. Brian Gregory. briang@cix.co.uk