Now GPS doesn’t work indoors – as it needs a clear view of the sky so for this I’ve placed the PI on the window sill. Ignore any messages from the console or in the log files, you may see it complaining about IPv6 but you can ignore that. Next we need to start the daemon: sudo gpsd /dev/ttyUSB0 -F /var/run/gpsd.sock
Now there is a suite of tools available for Linux called gpsd which we’ll install: sudo apt-get install gpsd gpsd-clients python-gps Now the next step is to get the pi receiving data from the satellites.
If you look in /var/log/syslog you will also notice it will have created the port as /dev/ttyUSB0 as it’s the first serial port. There the Prolific Technology entry is the GPS appearing as a serial port. PL2303 Serial Portīus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.īus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub When plugged in it appears as a serial port.īus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.īus 001 Device 004: ID 067b:2303 Prolific Technology, Inc. Now it comes with a CD for Windows machines but we don’t need it – as the majority of GPS receivers I know of use serial & this is no exception. Raspberry PI with the A73KF GPS receiver plugged in I bought this several months ago when they had it on special offer for £19.99 – it usually retails for £29.99.
The hardwareįor this experiment I’m using a USB GPS receiver from Maplin – product code A73KF.
So this article shows how to use A GPS receiver with the Rasperry PI – although these instructions are not specific to the PI. A GPS receiver then receives these signals and, as long as it has enough satellites and workout where you are by comparing the times from those clocks. GPS works by having a constellation of satellites in orbit and each one carries a highly accurate atomic clock & broadcast both their current position and the time. Now the obvious solution here is to use GPS as a time source. Now this is fine if you have a working net connection but what if you are not connected to the net? You might be in the field running the PI on batteries.Īs the other projects I have lined up for it is to connect my Meade LX200GPS telescope to the local network or to work with my (in prototype) radio telescopes so having an accurate clock is going to be required. Usually you would use the default settings and allow the PI to connect to thenet for it’s time. Now the Raspberry PI has no onboard Real time clock – which means it needs to use an NTP server to get the time when it starts. Now in theory that should be pretty simple as the current setup uses pywws to connect to the station and as that’s written in python it should work. Tried the command with sudo and got the same error.One of the tasks I want to use a Raspberry PI for is to take over the duties of an existing ITX based linux box running my weather station. Select GPSDAt step 2 I only get "device must be specified for low-level access". (, 08:49 AM)kwsherwood Wrote: Wanted to share my path for those who might also have struggled a bit to get the GPS puck (Global Sat BU 35324 ) running on the PI 4 Open the connections tab, select "ADD to GPSD"
You might find yours is USB0 etc., modify as required) In terminal, change it from binary to NMEA mode (*note, I determined mine was assigned to USB1. usb 1-1.3: Manufacturer: Prolific Technology Inc. $ Bus 001 Device 011: ID 067b:2303 Prolific Technology, Inc. Wanted to share my path for those who might also have struggled a bit to get the GPS puck (Global Sat BU 35324 ) running on the PI 4ġ) BU-353 is set to binary mode by defaultġ) Identify where the device is being assignedįind the name / company (eg.