> I have asked this before (some time back) on the list but never
> came up with a solution. What I need is a 256 byte table for a
> s-curve to convert a (linear) dim level (0=off, 255=full) into a value
> to use as a phase control variable in my lamp dimmer. Harold H
> posted a formula for it a while back but it goes way over my
> head I'm afraid. I searched the archives but there's no straight
> forward answer in there. A Google search did not reveal anything
> useful either. I was hoping that a Piclister had done this before &
> is willing to post it. I only need the table - not the phase control
> code any anything else. The rest of my code works fine.  :-)
> Thanks...


It seems like your going through a lot of work for a little return.
I doubt if you could perceive the difference between
50%, 50.5% & 51% levels.

When I built a dimmer I determined the minium delay from zero crossing to
get max bulb brightness, then the maximum delay to get the lowest usable
bulb brightness. I then used a basic program to take the 2 values and
generate
the 97 outher intermidiate values (1-100%).

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