Austin from austinsnerdythings.com here! Posted this last night and went to sleep. Definitely didn't expect to wake up to it #1 on HN this morning!

Some notes that weren't included in this post:

I do have my LEA-M8T generating time pulses at 16 Hz, with a dpoll of -4 in the chrony config. The poll interval of 16 seconds means it gets 256 samples which also improved the stability.

I do also have that mentioned BH3SAP GPSDO sitting next to me on my desk. I had Claude update the firmware to allow "flywheel" behavior so it continues to generate pulses in the absence of GPS PPS. That's coming in another post. Also had Claude update the firmware to spit out TSIP (trimble proprietary protocol) info for lady heather.

Going to go through the comments and answer a couple other things I see.

Happy to answer any other questions!

Thanks for writing this up! I have a similar setup, largely based on your earlier post. I'm looking forward to trying out some of these ideas.

Do 16Hz pulses make much difference? I found conflicting information and haven't yet tried it myself.

What do you use to get the data into influxdb? I'm using collectd but it doesn't gather a lot of useful info.

First: cool project.

Second: Is the Pi in an enclosure? You’ll get even more consistency if it is (vs a bare PCB). Even if it’s thin and metal it’ll insulate the system from things like your home heater or AC cycling.