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The most accurate Raspberry Pi atomic clock IN THE WORLD!

Jeff Geerling 167,397 4 years ago
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Will the fabric of space-time be split if I plug this highly-accurate Rubidium-oscillator-backed Time card into the Raspberry Pi? Probably not, but we'll test the driver on the Pi, probably recompile a kernel or two, and learn about Linux PTP networking and GNSS-based timekeeping along the way! Mentioned in this video (some links are affiliate links): - Linux recompile shirt: https://redshirtjeff.com/listing/linux-recompile-shirt?product=211 - GitHub issue for CM4 PTP support: https://github.com/raspberrypi/linux/issues/4151 - PCI x1 to x16 adapter: https://amzn.to/32oz9ou - Time Card on the Pi PCIe Database: https://pipci.jeffgeerling.com/cards_other/time-card.html - TechTechPotato video on Time Card: https://www.youtube.com/watch?v=Gr7sZ4MPMu8 - LTT video on Time Card: https://www.youtube.com/watch?v=JK3eTGkX6qY - Technology Connections turn signal video: https://www.youtube.com/watch?v=2z5A-COlDPk Support me on Patreon: https://www.patreon.com/geerlingguy Sponsor me on GitHub: https://github.com/sponsors/geerlingguy Merch: https://redshirtjeff.com #RaspberryPi #TimeCard #OpenComputeProject Contents: 00:00 - Meet the Time Card 01:16 - Who needs a nanosecond? 03:49 - Board tour 05:18 - Plugging it in 05:56 - Time Card driver 07:12 - PTP on the Pi 09:30 - There will be more... 10:44 - Outtro and outtakes

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