I'm aware that the esp32 includes a sntp client, at least in the incarnation in the arduino IDE. And google give me several "NTP" libraries for both the esp8266 and esp32. However, everything I've tested seems to only sync to the nearest second.
I would like to find something that syncs more accurately, and perhaps disciplines the clock as well (if that's even possible with these chips). Do you know of any NTP libraries like this? I've considered trying to write my own, but it's probably above my (lack of) programming ability.
I'm planning to build a few 6 digit clocks using nixies and numitrons, and don't want to have the seconds occasionally sit still for almost 2 seconds or maybe go back a second when time is synched.
Ed