> I'm not certain what I was looking at there

Generally to show that a PIC can appear to be very busy yet still have
spare time on its hands. Would there be any noticeable difference if
you went 5-bit instead of 7-bit ? Or even 4-bit ? As far as a dimmer
goes I'm not sure there would be

High speed isn't necessarily needed for I2C because it's firmware-
driven, unlike the UART, so all you have to do is pick up the SSPIF
and process the data, which could be done within the dimming interrupts,
which my circuit showed an example of (pot values -> LCD)

> or how you determine that the output would be sufficiently stable to
> not be seen in my specific application

Stability isn't really the issue with LEDs, it's the lack of persistence
when dynamically driven. The odd momentary disturbance, eg delaying
a refresh by a few 10s of usec, would probably not be visible

Do you know how or why this range came about ?

> PWM frequency  fPWM  200  300     400        Hz

One scenario I can imagine is that at high-speed PWM, high-current
pulses are needed to maintain the same relative brightness as would be
had at slower or static drive, which can lead to heating of the LED die
and reduce lifetime. Seems a tenuous scenario though

> Also wonder how you got from "Jinx" to "IVP".

'Jinx' was a bit of an in-joke in a group of friends. No matter what
I got involved in, it failed. Which led to quite some soul-searching. I
decided it wasn't my efforts, it was the lack of everybody else's. And
I still think that

The joke wore thin so I dropped it. Not that it's made the slightest
bit of difference ;-(((( Still hand-to-mouth. Yet to be associated with
even one moderately-successful ongoing product, much to my great
disappointment. However, I am looking at on-line trading, maybe
that'll pan out, under the name 'inventerprises'
--=20
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