Low cost is on a PC with a large font. It in no way will resemble the 1962 clock in your picture. This used Plexiglas digits with actual lamps like a 327 as an example. I had a display like that many years ago.
That said I don't know what you would have to drive the down count and then upcount. Unless you just start the clock at some negative number and when it hits zero it counts up. Good luck on your project Paul WB8TSL On Sun, Jan 11, 2015 at 10:30 AM, Martin A Flynn <[email protected]> wrote: > I am looking for a GMT/GET mission time clock that has the following > characteristics: > > * Reads T minus prior to launch or deployment, T plus after. > * Second display for GMT. > * Simulating it on a PC display would be OK, would prefer an LED/LCD > version for wall mounting > > There is a example of what I am looking for in the background of this > photo: https://www.hq.nasa.gov/alsj/a16/A16_116_13_15.jpg . We have > NTP, IRIG-B, and a 1 PPS source to work with. > > Any suggestions on a cost-effective way to accomplish this? > > Cheers > Martin Flynn > > > > _______________________________________________ > 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.
