Build a Stratum 1 PTP Grandmaster on a Budget

A developer built a budget-friendly Stratum 1 PTP (Precision Time Protocol) grandmaster clock for nanosecond-accurate time synchronization using a Raspberry Pi CM4 and GPS module for approximately $103 in new parts, compared to commercial solutions costing thousands of dollars. PTP enables nanosecond-level time precision across local networks through hardware timestamping, making it essential for industrial automation and scientific applications where standard NTP cannot provide sufficient accuracy. The build demonstrates that learning PTP synchronization is achievable on a modest budget using readily available components.