In today’s society, precise time is crucial, especially in industries like robotics, finance, and media production. Typically, setting up a DIY PTP grandmaster clock server was costly and complicated, deterring hobbyists. Enter Time Pi, a project to create a stratum 1 PTP and NTP timeserver using a Raspberry Pi 5. Designed with input from Masterclock, this project integrates with TimeAppliances’ TimeHAT, featuring an Intel i226 2.5 Gbps NIC with support for PTP hardware timestamping. While encountering minor hardware issues, the Time Pi is now running smoothly as an NTP time server, with future plans for outdoor GPS installation and clock testing.
https://www.jeffgeerling.com/blog/2025/diy-ptp-grandmaster-clock-raspberry-pi