On Thu, Nov 16, 2023 at 06:03:56PM +0100, Manuel Bouyer wrote: > To do better I think I'd go with an implementation of ntpd on a > microcontroller > (maybe an ESP32, which has native ethernet) and use the PPS signal with a > capture channel. Doing true real time on more complex CPUs is really hard. > > I know there is an implementation on arduino, but I think a 32 bit MCU > would be a better choice.
That sounded like such a good idea somebody must have done it before, and it seems so (even with cool display): https://github.com/liebman/ESPNTPServer Martin