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Qualcomm Flight RB5 Modem

Table of contents

  1. rb5-modem
    1. How to Build and Install
    2. How to Use
      1. Configure to Run on Bootup
      2. View Service Status
    3. Connecting to QGroundControl


rb5-modem is a tool for enabling cellular connection on RB5 Flight via Quectel or Telit 5G modem.

For more info on connecting to a ground station over the 5G network, checkout the following page:

How to Build and Install

If you have a Qualcomm Flight RB5, it comes pre-loaded with the software and there’s no need to re-install unless you want to. If you want to see the source, build and tweak it, the repo is COMING-SOON.

How to Use

Configure to Run on Bootup

The rb5-modem package installs with a configuration script. You can run the following after you adb onto the target.

  • adb onto target
adb shell

You will be prompted to select your modem hardware and APN (Access Point Name) for your chosen SIM card.

This will enable the rb5-modem service in the background and it will be started at boot.

The configuration file located at /etc/modalai/rb5-modem.conf can be modified directly to change settings as well.

  • Enable rb5-modem to connect to network on bootup and start
sh-4.4# rb5-modem-configure factory_enable
  • Disable rb5-modem from connecting to network on bootup and kill network by running
sh-4.4# rb5-modem-configure factory_disable

View Service Status

sh-4.4# systemctl status rb5-modem

● rb5-modem.service - "rb5-modem"
   Loaded: loaded (/usr/bin/rb5-modem; indirect; vendor preset: enabled)
   Active: active (running) since Mon 2021-07-26 16:28:00 UTC; 15s ago

Jul 26 16:28:00 qrb5165-rb5 systemd[1]: Started "rb5-modem".
Jul 26 16:28:00 qrb5165-rb5 rb5-streamer[9522]: Initializing network connection...

Connecting to QGroundControl

Checkout this page for info on Connecting to QGC over 5G using a VPN