Introduction In the last two PPS posts (the original in 2021 and the revisit in 2025), we explored how to get microsecond-accurate time with a Raspberry Pi and a GPS module that outputs a once-per-second pulse (PPS). That project was a ton of fun—and borderline overkill for most home setups—but it got us into the … Continue reading Nanosecond accurate PTP server (grandmaster) and client tutorial for Raspberry Pi