bit bang 3 pins for independent PWM...but if I do that with enough
    resolution (8 bits minimum,10 better) I think I will run out of cycles.

I don't think you could 1024 useful brightness levels out of a typical
LED.  That's better than most color monitors...  Even If you COULD do
it, I'd question the need to do it...

(does anyone happen to have specs on those roadside "TV" screens that
seem to be made up of LED emitters?  I'm betting fewer than 16 levels
per LED...)

BillW

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