On Apr 11, 2012 2:54 PM, "Wouter van Ooijen" wrote: > > > Why not do software PWM on the existing I/O pin then? All that is needed is > > a low pass filter. > > Quote Neil: FWIW, there's too much going on in the chip > to get any decent bit-banged PWM. > I remember someone here describing a D to A output based on a random number. It wasn't timing sensitive. From my memory: if your random number is below your target value turn the output on, else output is off. I don't know if it's viable with a pseudo random generator. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .