Uploaded March 2026 | Updated September 2026, 2 weeks ago

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Check out the Switchberry: github.com/Time-Appliances-Project/Switchberry

Also mentioned:

- My Stratum 1 PTP/NTP Pi 5 Server: github.com/geerlingguy/time-pi
- TimeHAT V6: pmqipr-s3.myshopify.com/collections/timehatv6-bundles

Yes, I know it's expensive. Someday we can maybe get the price down, if we can prove the concept :)

Support me on Patreon: patreon.com/geerlingguy
Sponsor me on GitHub: github.com/sponsors/geerlingguy
Merch: redshirtjeff.com
2nd Channel: youtube.com/@GeerlingEngineering
3rd Channel: youtube.com/@Level2Jeff

Contents:

00:00 - N'Sync
00:40 - The Switchberry
01:24 - The TimeHAT V6 Pi Server
02:34 - NTP Sync
03:25 - PTP Settings
05:08 - Wireshark PTP packet sniffing
08:20 - It's always 37 seconds off
10:10 - Switchberry internals