Michael Rigby-Jones wrote:
> I think you'll find that lack of operation during the night is a
> standard "feature" of sundials ... Then again it's not like you're
> going to have one in the bedroom.

Not such a bad idea.

The PIC would have to supply the artificial sun.  The scaling would have
to change to 24 hours for 180 degrees instead of just 12 hours.  I would
put the sun, a 12V dichroic lamp, on a track in a semicircle around the
bedside sundial.  It would have to whip back to starting point every
day; maybe during a favourite television show when nobody is looking.

At least this way the device will work when it is cloudy or rainy.  And
you won't have to suffer through all these extra calculations for the
tilt of the planet.

The loss of angular resolution might be a problem, but that could be
countered with a digital LED display.

--
James Cameron                                      (quozl@us.netrek.org)

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