PrecisionClock-Hardware reviews and mentions

• Is it possible to buy a physical ISO 8601 clock similar to this one?
  1 project | /r/ISO8601 | 14 Aug 2021

  The rules for daylight saving are hard coded because there is no user interface except a manual DST selector on the backside. Dealing with time zones is a nightmare to Programm but your idea with a simple offset seems pretty easy to program and would actually look really nice. But we have to keep in mind that the clock is just a hobby project that appears to fit Mitxelas mission requirements really well. The clock is also open-source on his GitHub so everyone can have a go! I can’t tell if the μC can handle even more drivers and digits with millisecond accuracy but it would be fun to try it out! I‘ll give it a shot when I get my hands on some bigger 7-segment displays and necessary components for the T and +/-