Host your own Stratum 1 NTP (network time protocol) server using a $12 USD USB GPS to keep all your other servers synchronized : r/selfhosted
Stratum 1 Grandmaster Time Server On A Budget | Hackaday
PDF) BUILDING A RASPBERRY PI ZERO-W GPS NETWORK TIME SERVER FOR UNDER $50
Microsecond accurate NTP with a Raspberry Pi and PPS GPS - Austin's Nerdy Things
Raspberry Pi – Stratum 1 NTP Server | Mostly Robots
Building a Stratum 1 NTP Server with a Raspberry Pi | Transmission
Time Server
Building a GPS based time server | Jacob Deane - geek, photographer, engineer
File:Compact Stratum 1 NTP time server hardware, October 2020.jpg - Wikimedia Commons
5 minute guide to making a GPS Locked Stratum 1 NTP Server with a Raspberry Pi | Ava High Altitude Balloon Project
Raspberry Pi – Stratum 1 NTP Server | Mostly Robots
How to build own Stratum-1 NTP server on Raspberry-Pi + GPS (PPS) – Trader's Notes
Raspberry Pi NTP Server LCD Status Display – JackenHack
Building a Raspberry-Pi Stratum-1 NTP Server
The Raspberry Pi as a Stratum-1 NTP Server - Raspberry Pi Pod and micro:bit base
NTPi – Raspberry Pi as a Stratum-1 NTP Server Hardware Part 2 | Ava High Altitude Balloon Project
Building a Raspberry-Pi Stratum-1 NTP Server
GPS-Disciplined NTP Server on Raspberry Pi 4 : r/RASPBERRY_PI_PROJECTS
Pi-Based Stratum 1 GPS Time Server
Building a Raspberry-Pi Stratum-1 NTP Server
Build Your Own Stratum 1 NTP Time Server with a Raspberry Pi and U-blox NEO-6M - Hackster.io
Stratum-1 NTP server on Raspberry Pi • NetWeaver
