Pavel said: > But when it comes to sawtooth correction, I used another approach in my > design. It seems that the combination of high frequency input from GPS > module, the clock jitter of Raspberry Pi Pico GIO and Kalman filter is > able to smooth/smudge this problem. Not for 100%, but I am working hard > on it. Every time I see something like that, I start thinking about hanging bridges. :) Good graphs here: http://www.leapsecond.com/pages/m12/sawtooth.htm -- These are my opinions. I hate spam.

-------- Hal Murray via time-nuts writes: > > Pavel said: > > But when it comes to sawtooth correction, I used another approach in my > > design. It seems that the combination of high frequency input from GPS > > module, the clock jitter of Raspberry Pi Pico GIO and Kalman filter is > > able to smooth/smudge this problem. Not for 100%, but I am working hard > > on it. > > Every time I see something like that, I start thinking about hanging bridges. :) And that most people overlook that the average of hanging bridges is not zero. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.