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DIY PTP Grandmaster Clock with a Raspberry Pi
;dr: I set up an open source Time Pi project to build a stratum 1 PTP and NTP timeserver using a Raspberry Pi. Time is important to modern society, and most of us have a clock on our wrist that's more accurate than at any time in human history.
Historically, setting up a DIY PTP grandmaster clock server was a painful and expensive endeavor, pricing out most hobbyists. A video I published on my YouTube channel includes my conversations with them (and a lot more detail about the Time Pi). The TimeHAT is a $200 HAT for the Pi 5 which includes an Intel i226 2.5 Gbps NIC with PTP hardware timestamping support.
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