GPS Data From Modem To NodeRED

Hi Forum,

I would like to know if it is possible to get the GPS Data (Longitude, Latitute Etc) from an installed 4G Modem and pass to NodeRED so that i can view the devices current position. I am able to manually display a position on Worldmaps but this data is manually typed in. 

The modem that i have installed is a Sierra Wireless MC7304 PCI-E and has 4G LTE and GPS with the appropriate antennas connected. 

Once i can get this data into NodeRED i am more than happy to share my flow for the community. 

Thanks 

Marcus 

Hi Marcus,

I am trying to achieve the same result. i am now looking for options as gpsd and ntsd. 

maybe this can help too : https://embeddedpi.com/documentation/3g-4g-modems/simcom-5360e-modem-gps-configuration

https://link.springer.com/chapter/10.1007%2F978-1-4302-6838-3_12

https://techship.com/faq/basic-standalone-gnss-gps-usage-guide-for-sierra-wireless-airprime-em-mc74-series-cellular-modules/

I can't test it myself for the moment as i'm still waiting for my LTE modem to arrive.

Let me know if you get it working or not.

kind regards

Hi,

I managed to get it working in IOT2050. I used a SIMCOM 7100E 4G/GPS mPCIe card., Unfortunalty the gsm is not stable, it did work for a while, but after a while after reboot, it connects but than goes from connected to 'registered' when I check with 'nmcli connection show', is up for a minute but goes down after a minute.

However, I managed the node-red gpsd node working, there are many video's on youtube on how to install it on a RPI, most of the configuration works on this Debian build of the IOT2050 as well. It turned out that the GPS data was coming in from ttyUSB1, you have to redirect the socket to your serial USB port.

first check if GPS data is coming in for instance: "cat /dev/ttyUSB1" or in your case maybe "cat /dev/ttyUSB2"

After installing all the required packages, redirect in:

"sudo nano/etc/rc.local" and change serial0 to your GPS port, for instance: ttyUSB1

A link to RPI4 & GPSD, many of the config will work:

How to Use a GPS Receiver With Raspberry Pi 4 | Raspberry Pi | Maker Pro

With minicom, you can send AT commands to the modem to enable GPS, for at least the module I was using. 

Unfortunately, I cannot install/compile any drivers for the specific mPCIe card I am using, when it tries to build, it is lacking linux-header files, building a new image from scratch is a liitle bit out of my league. 

By the way @Marcus, did the Sierra Wireless MC7304 PCI-E work out of the box and did the IOT2050 recognize it?