Aug 16, 2021 · The new Real-Time HAT by InnoRoute adds IEEE1588 PTP support in hardware to a Raspberry Pi 4 nestled beneath. Based around a Xilinx Artix-7 FPGA and a handful of gigabit Ethernet PHY devices,...

Mar 28, 2025 · The TimeHAT is a $200 HAT for the Pi 5 which includes an Intel i226 2.5 Gbps NIC with PTP hardware timestamping support. There are two SMA connectors for PPS in/out (configurable), an extra U.fl connector to another PPS port on the NIC, and an M.2 slot routed for a custom GPS module.

Aug 17, 2021 · The new Real-Time HAT by InnoRoute adds IEEE1588 PTP support in hardware to a Raspberry Pi 4 nestled beneath. Based around a Xilinx Artix-7 FPGA and a handful of gigabit Ethernet PHY devices, the HAT acts as network-passthrough, adding accurate time-stamps to egress (outgoing) packets and stripping time-stamps from the ingress (incoming) side.

Aug 17, 2021 · InnoRoute Real-Time HAT adds IEEE1588 Precision Time Protocol (PTP) to Raspberry Pi 4/3 via a Xilinx Artix-7 FPGA and three Gigabit Ethernet ports. The Precision Time Protocol (PTP) is used to very accurately synchronize clocks throughout a computer network to enable measurement and control systems.

Jul 6, 2022 · PTP is more prevalent in HFT (High Frequency Trading) in finance, scientific research, and distributed databases that need highly accurate timings. But with a tiny Compute Module 4 able to control hardware timestamps—plus the plethora of available high-quality GPS HATs for the Pi—maybe highly-accurate time could be more democratized!

The Precision Time Protocol (PTP) is a protocol used to synchronize clocks in a network. When used in conjunction with hardware support, PTP is capable of sub-microsecond accuracy, which is far better than is normally obtainable with NTP. PTP support is …

Jul 15, 2022 · If that’s overkill for your projects or budget, the Time4Pi CM4 hat is about to be release for under $200. If accurate time keeping is your thing, the technology is now within reach of the...

Jul 15, 2022 · The new Real-Time HAT by InnoRoute adds IEEE1588 PTP support in hardware to a Raspberry Pi 4 nestled beneath.

A Raspberry Pi stratum 1 time server. Takes in GPS (or potentially other stratum 0 time sources), spits out NTP, PTP, etc.

This repo contains instructions for building a timeserver using GPS/PPS as the reference clock. It uses NTP and PTP to share time with the local network. The key hardware components used are: You'll also need SD cards, power supplies and probably cases for your RaspberryPis.