https://github.com/parlaynu/pi5-timeserver-gps-pps
Create an NTP and PTP timeserver using RaspberryPi5 with BerryGPS-IMU and PPS
https://github.com/parlaynu/pi5-timeserver-gps-pps
berrygps-imu chrony gps gpsd linuxptp ntp phc2sys pps ptp ptp4l raspberry-pi-5 ublox-m8c ubxtool
Last synced: 3 months ago
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Create an NTP and PTP timeserver using RaspberryPi5 with BerryGPS-IMU and PPS
- Host: GitHub
- URL: https://github.com/parlaynu/pi5-timeserver-gps-pps
- Owner: parlaynu
- License: mit
- Created: 2024-01-19T21:45:34.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-05-16T00:19:13.000Z (about 1 year ago)
- Last Synced: 2025-01-28T21:34:32.111Z (5 months ago)
- Topics: berrygps-imu, chrony, gps, gpsd, linuxptp, ntp, phc2sys, pps, ptp, ptp4l, raspberry-pi-5, ublox-m8c, ubxtool
- Homepage:
- Size: 4.94 MB
- Stars: 24
- Watchers: 3
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# RaspberryPi5 GPS/PPS Timeserver
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:
* [RaspberryPi 5B](https://www.raspberrypi.com/products/raspberry-pi-5/)
* [BerryGPS-IMU v4](https://ozzmaker.com/product/berrygps-imu/)
* [GPS External Antenna](https://ozzmaker.com/product/antenna-for-berrygps-and-berrygps-imu/)
* [RaspberryPi 4B](https://www.raspberrypi.com/products/raspberry-pi-4-model-b/)
* Network switch
* Network cables
You'll also need SD cards, power supplies and probably cases for your RaspberryPis.
The Pi5B has a network card with support for PTP hardware timestamping, although it could also be done with
PTP software timestamping on an earlier version of the Pi.
The Pi4 is used for the client because I had one already. The setup described for the Pi4 client should be easily
transferred to any Linux machine.
The images below show the Pi5 with the BerryGPS-IMU HAT attached, and the complete hardware system:
And the software components are a bit like this:
## Server
Instructions for the server setup are [here](docs/server.md)
## Client
Instructions for the client setup are [here](docs/client.md)
## GPS Configuration
Instructions for customising the GPS configuration are [here](docs/gps-configuration.md)
## Reference
Great Example using NTP
* https://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html
RaspberryPi
* https://www.raspberrypi.com/products/raspberry-pi-5/
* https://www.raspberrypi.com/software/
* https://www.raspberrypi.com/documentation/
BerryGPS-IMU
* https://ozzmaker.com/berrygps-setup-guide-raspberry-pi/
UARTs
* https://www.raspberrypi.com/documentation/computers/configuration.html#configuring-uarts
* https://forums.raspberrypi.com/viewtopic.php?t=359132
PPS
* https://www.kernel.org/doc/html/latest/driver-api/pps.html
* https://forums.raspberrypi.com/viewtopic.php?t=195011
GPSd
* https://gpsd.io/
* https://gpsd.io/gpsd-time-service-howto.html#_providing_local_ntp_service_using_ptp
Chrony
* https://gpsd.io/gpsd-time-service-howto.html#_feeding_chrony_from_gpsd
* https://chrony-project.org/
* https://chrony-project.org/comparison.html
PTP
* https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/deployment_guide/s0-serving_ntp_time_with_ptp