Homelab PTP Grandmaster Achieves Nanosecond Time Synchronization

TL;DR. A homelab project successfully built a GPS-disciplined PTP grandmaster using a Raspberry Pi CM4 and an SR1723U10 GPS module, offering nanosecond accuracy. - The custom grandmaster cost around 03 in new parts, significantly less than commercial alternatives. - It synchronizes clocks within tens of nanoseconds, crucial for industrial infrastructure and high-frequency data. - The project detailed hardware setup, software stack, and bug fixes for precise timekeeping.

• A custom GPS-disciplined PTP grandmaster was built using a Raspberry Pi CM4 and a SR1723U10 GPS module.
• The system achieved nanosecond-accurate time synchronization, vital for industrial automation.
• The project provided a low-cost alternative to commercial PTP grandmasters, costing around 03 for new parts.
• The build detailed challenges and solutions for hardware timestamping and software configuration.

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