Quote Originally Posted by Bruce View Post
You can have different duty-cycles, but the frequency will be the same on both CCP1 & CCP2 since they both use the PR2 register of TIMER2 for the PWM period.
Hey...good point...Duh on my part...
Set up a 555 timer for a 50% 38Khz square and turn it on/off with a PIC pin, or use a 2nd PIC set up for the same thing as the 555. An 8-pin PIC makes a helluva useful 555 timer....with a load of options...