I had fun with a Jefferson Mystery Clock (e.g. 370956057565); the synchronous motor can be replaced with a stepper. 1.8 deg per step works out just right for the gearing. it's a gas, and an arduino will drive a simple stepper. Don
Jim Lux > 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. > > -- "The power of accurate observation is commonly called cynicism by those who have not got it." -George Bernard Shaw Dr. Don Latham AJ7LL Six Mile Systems LLC 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ 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.
