> OK - here is my Sundial project. Not existing - something for my retirement::
>
> 2 photodetectors behind a lens with a tube are mounted on a disk that can rota
te horizontally. Functionally you can say it is rotated by a stepper motor; one
turn per day (I actually have another Ve
> y low-power idea in mind). The sun would give equal light to the photodetector
s when the lens with tube is aimed towards the sun. When off balance, the steppe
rmotor would give it a nudge to line up
> gain. A dial indicating time is attached to the disk.
>
> At sunset, the stepper motor would swing around to wait for the sunrise again
- quickly before a "power-capacitor" discharges (avioding NiCad's). And go beddi
byes.
> All solar powered - of course :=)

No time during the night ??? This sounds like the solar powered
flash-light. Way to go  :=}
Regards Cassie