Hi I realize this is *exactly* what the OP didn’t want to do, but ….
A PI or any of the little dedicated ARM + GPU gizmos driving a cheap junk HDMI monitor or TV would make for a very nice display of all that data… The total cost could still be under $100. With Linux running on the “gizmo” locking it up to NTP should be a snap. No messy issues with code size …. Bob On Jan 20, 2014, at 1:49 PM, Jim Lux <[email protected]> wrote: > So here's my next idea.. > > > Set up a 24 hour movement (no minute hand) so that you have the sun moving > around the dial: at the top at solar noon, with the rate being reasonably > constant around the dial(e.g. using the solar clock algorithms developed) > > Then, have two other pointers or sectored disks on the face to indicate > sunrise and sunset time. I haven't figured out the mechanical aspects, but > maybe a small motor driving the edge of a clear plastic disk. (or if there > were a good cheapish source for multi axis pointer systems). > > One could also add a moon pointer (and all the rest of the planets too). > Sort of a geocentric Orrery. The planets would need to be able run in both > directions to accommodate retrograde apparent motion. > > It would be easy with laser pointers or light beams and stepper motors > driving a tilted mirror to project moving dots on the wall, but a more > mechanical display would look nicer, I think. > > Once the mechanical aspect is figured out, the software should be fairly > straightforward to drive whatever motors there are. > > (After noticing Saturn this morning when I went to go get the paper before > dawn) > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
