Peter Buechler focused on stabilizing time synchronization in the nrfconnect/sdk-zephyr repository by addressing a critical bug in the Precision Time Protocol (PTP) Grandmaster election process. He corrected the BMCA ranking logic in C, ensuring proper application of priority fields and tie-break rules as defined by IEEE 1588 standards. This fix improved state transitions between TIME_TRANSMITTER and GRAND_MASTER, preventing unreliable master clock elections and enhancing network reliability. Drawing on his expertise in embedded systems and protocol implementation, Peter’s targeted code change increased the predictability and interoperability of time synchronization across deployments, reducing incidents related to master clock mis-election.