peter green wrote:
>> Not critical, just above visual flicker rate and
>> with a 0-100% adjustable duty cycle.
> What else is the pic doing, if the pic isn't doing anything else and is 
> running at a reasonable speed then it should be more than fast enough to 
> do it in pure software.

Nope, it has nothing else to do but manage the brightness
of these three LED strings.
-- 
#ken	P-)}

Ken Coar, Sanagendamgagwedweinini  http://Ken.Coar.Org/
Author, developer, opinionist      http://Apache-Server.Com/

"Millennium hand and shrimp!"

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