James Clark

Ah, that makes sense now. I suggest structuring it like this: - add generally useful explanation of how users can perform their own measurements to measure.md - create a new...

The TS-3 gives you the time-pulse from the U-blox LEA-M8T as is, and that just has a TCXO. I'm curious about the TM4313. It's potentially a good option. - what's...

I found this https://tomverbeure.github.io/2023/07/09/TM4313-GPSDO-Teardown.html which answers most of my questions. It says there that the PPS output is 5V. Have you connected this to the CM4 without problems? That's good...

Looking at https://www.ardusimple.com/simplertk2b-hookup-guide/ it seems like that board gives you access to both the F9P UARTs and the USB port. You can then configure the F9P to say which protocols...

The M.2 card only exposes the USB port, so it wouldn't work well for your application. I don't think it would be a good option for the CM4, but it's...

Sorry, I should have been clearer: the only interface it exposes *for messages* is USB. The card has two U.FL connectors, one is for the antenna and the other is...

I am using the Timebeat mod to the i225-T1: https://store.timebeat.app/products/intel-i225-t1-with-sdp-headers-and-a-u-fl-breakout-board Then I used a U.FL-U.FL cable to connect the PPS pin from the M.2 Z9P card to the SDP pin...

> Use ts2phc to take the NMEA timestamps from GPS to the PHC What the OS does is tell you the PHC time at which a pulse occurred. The key...

I have now released a companion guide for doing PTP on PC hardware, which deals with the i225 https://github.com/jclark/pc-ptp-ntp-guide

It would be great to be able to get this working. I don't know much about this... I am guessing that the problem here is that it is specifically an...