If you aren’t seeing the settings its possible the NTP server is picking up the NTP information via DHCP which is over riding your settings above. If you get oPPS(0) this indicates source selected, Pulse Per Second (PPS) used and everything is working. Its worth at this point seeing if you’re ISP has its own NTP server you can use and adding that. Note You MUST add a preferred server or PPS doesn’t work. You may also want to add your local lan to so you can query the NTP Server by adding: flags: qr rd ra QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1Īdd the four servers from the dig command with the top one saying prefer on it: >HEADER<<- opcode: QUERY, status: NOERROR, id: 51647 Select your region then you get a list of the country servers. The easiest way to do this is pick your region: You need to pick a few local NTP servers to use. The supplied version of NTPD on the Raspberry Pi now supports PPS so there is no need to roll your own NTP. GPS board mounted in Geaux Robot Dog Bone Case for Raspberry Pi B+ also available from Uputronics This indicates the PPS Module is loaded (top example) and is working (bottom). Ok, found 1 source(s), now start fetching data. pps_ldisc: PPS line discipline registered pps pps0: Registered IRQ 498 as PPS source
#Airspy planeplotter install
Sudo apt-get install pps-tools ntp dnsutilsĮnsure the GPS has a lock and the Green PPS LED on the Uputronics Pi+ GPS Expansion Board is blinking once a second. Quit but no need to reboot at this point.
#Airspy planeplotter serial
P6 Serial -> Login Shell (no) Hardware (yes) (Optional) P2 SSH -> Would you like the SSH server to be enabled – YES (Recommended) Text in red indicates editing inside a file. Either connect locally or via SSH to the Pi (If you can’t SSH in and don’t have a monitor see this )įollow the instructions carefully if you miss steps things won’t work. Other distributions may work but these instructions are known to work with Raspbian Stretch Lite.Īttach the Uputronics Raspberry Pi+ GPS Expansion Board to the Pi, insert the SD card, connect the antenna and network cable and boot the Pi up. This guide is assuming you’re using Raspbian Stretch Lite November 2018 released image. Download and write this to an SD card (See ). You will need a Raspberry Pi 2 or 3 B+, the Uputronics Raspberry Pi+ GPS Expansion Board and a suitable GPS antenna. The guide assumes you have a cursory knowledge of Linux, enough to install Raspbian and login should do. With assistance from David Taylor who did lots of background work on this here I present the following instructions on making a cheap PPS disciplined NTP Time server using one of the Raspberry Pi+ GPS boards sold on Uputronics. Ideally rather than supplying a premade image I would have a set of concise instructions on making your own install from scratch so you could use the latest versions of the software. Uputronics Raspberry Pi+ GPS Expansion Board You need an external server and then use PPS to discipline it. NTP isn’t designed to work off grid using just the NMEA derived time and PPS to discipline it. This solution will not give you a standalone off grid NTP server. No other version or distribution is supported. If you need a standalone ready to go solution or need more performance please consider the LeoNTP Networked Time server unit which is available here.ĭue to significant changes to Raspbian we have decided to retire the old guide here and redo it.This guide assumes Raspbian Stretch Lite November 2018 released. This is an article on making a network attached Stratum 1 NTP Server using a Raspberry Pi+ Model 2 or 3 and the Uputronics Raspberry Pi+ GPS Expansion Board.