Would you care to share what you did? I found this online. It looks interesting. Maybe nothing more than a fun project. Seems to be a lot of debate on how effective it is. I'm a novice at this stuff so I don't have any value to add on it's effectiveness...
https://raspberrypi.stackexchange.com/questions/74482/switch-out-the-x1-oscillator-on-a-rpi-2-3 I may play with the python script that was in an earlier post. Just need to find a good way to insulate the PI. Bubble wrap just seems to not be a good solution. Sounds like a static collector to me.... ??? -- Joe KA3NAM Apr 25, 2020, 3:39 AM by st...@pe1rks.nl: > Regarding the temperatur sensitivity of the raspberrypi, i have replaced the > xtal on several if them by a tcxo. This a hell of a difference. > > Kind regards, > > Stijn Nestra > > Verstuurd vanaf mijn iPhone > >> Op 25 apr. 2020 om 09:47 heeft David J Taylor via time-nuts >> <time-nuts@lists.febo.com> het volgende geschreven: >> >> From: Andreas Kempe >> >> Hello everyone, >> >> I want to build an affordable quality time source for my computer >> club. I've been toying with the idea of using an oven controlled >> oscillator from Ebay for getting a reasonable (0,5 ppm frequency >> stability) 1 PPS signal and a cheap GSP chip with UART for syncing the >> time. I was thinking of running this on a Raspberry Pi with FreeBSD >> and its gpiopps driver. >> >> Is this a reasonable setup for an affordable NTP server? >> >> Cordially, >> Andreas Kempe >> _______________________________________________ >> >> Andreas, >> >> Here's an example of a simple device you can build: >> >> https://www.satsignal.eu/ntp/Raspberry-Pi-quickstart.html >> >> It's quite temperature sensitive, so either put it where the temperature is >> stable, or use ntpheat to keep the CPU at a much more constant temperature: >> >> http://www.satsignal.eu/ntp/Raspberry-Pi-ntpheat.html >> >> With those recommendations, and noting the delays in RPi I/O (at least in >> the earlier RPi cards where Ethernet is over USB), I would suggest that an >> OCXO is overkill. No reason to deviate from the Raspbian OS. >> >> You can gauge the performance from various Raspberry Pi devices here: >> >> http://www.satsignal.eu/mrtg/performance_ntp.php >> >> Cheers, >> David >> -- >> SatSignal Software - Quality software for you >> Web: http://www.satsignal.eu >> Email: david-tay...@blueyonder.co.uk >> Twitter: @gm8arv >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.