> -----Original Message-----
> From: : Cassie Carstens [SMTP:eng1@TBH.WCAPE.GOV.ZA]
> Sent: Tuesday, May 11, 1999 9:54 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: SV: Re: Weird, Wacky, Zany PIC applications
>
> > 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 rotate 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
> photodetectors when the lens with tube is aimed towards the sun. When off
> balance, the steppermotor 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 beddibyes.
> > All solar powered - of course :=)
>
> No time during the night ??? This sounds like the solar powered
> flash-light. Way to go  :=}
> Regards Cassie
>
        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.

        Regards

        Mike Rigby-Jones