Shahid Sheikh wrote:

> I'm using a 12C508 to control the lights in a HO scale model church.
> On one of the desks in the church, I was planning on putting a real
> tiny bulb and make it flicker like a candle.

  A yellow LCD might be good too - a "candle-like"" colour.

> Anyone has an algorithm handy for making a bulb flicker like a candle?

  Well, concept yes.  A 7-bit Pseudo-Random Binary Sequence Generator
will generate a sequence of 128 steps.  Running at 20 steps per second,
this gives a cycle length of 6.4 seconds and it's unlikely that a viewer
would notice a repeating cycle of that length.

  IIRC, the feedback steps for this are bits 1 and 7, or 6 and 7.  Other
loner sequences are better, but you have to know the fedback taps for
maximal sequence.  Someone *must* have a web reference.  Scott?
--
  Cheers,
        Paul B.