While the #twatch is not the ideal display I envisioned, it was an excellent first try on my part. I had to make some simplifications due to the lack of configurability and the limitation of the flash memory in the Microchip controller. The clock only displays UTC, and in the American format at that. The display uses the default pool.ntp.org addresses to get its time from; it’s not possible to specify a custom NTP server. (Both I and my workplace each have a Garmin GPS module and an NTP server, which were, ironically, much cheaper and easier than a display has proven to be!)
Via the forum.