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Radxa Zero 3w w/ OpenIPC v1.7.0
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@JohnDGodwin JohnDGodwin released this 28 Sep 12:28
· 12 commits to master since this release
zero3w-v1.7.0
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Learn about vigilant mode.

This is a prebuilt image for the Radxa Zero 3w to stream OpenIPC video.

V1.7.0 Release Notes:

  • Locations have changed with this release -- everything is now located on a separate FAT32 partition mounted to /config on boot. This enables the user to make settings changes outside of booting the image. e.g. Plug the SD card into a windows PC and a drive will display named config. Inside is a folder named scripts containing the settings files.

  • DVR recording location has also changed. It is now saved to /media. It can of course still be accessed via a web browser located at x.x.x.x:8080 -- replace x.x.x.x with your groundstation's local ip address.

  • This image assumes the user is using MSP OSD and the PixelPilot osd has been disabled by default. While MSP OSD is recommended, the old mavlink osd can be re-enabled by changing the perimeters passed to the launch of PixelPilot in the stream.sh script.

This image uses the PixelPilot project rather than pure gstreamer to display the video.

On first boot, the stream will not start to give the user the ability to set up the system. Please perform the following steps.

  • Step 1 - Flash the image to either your onboard emmc or a micro SD card.

  • Step 2 - Connect a screen and a wired keyboard to your radxa (you may need a usb-a to usb-c adapter or hub) and boot the system.

  • Step 3 - The system should boot to a CLI. Login as either radxa/radxa or root/root (I personally use the radxa user but some prefer using the root account. EVERYTHING IS LOCATED AT /config)

  • Step 4 - Change to the /config/scripts directory by running cd /config/scripts and run ./resizefs.sh to repartition and resize your filesystem. Ignore the red warning text and let the script finish.

  • Step 5 - Use the onboard wifi to connect to your home network: (note - if you are running your fpv system on the 5.8ghz channels, it would be ideal to connect the onboard wifi to a 2.4ghz network to avoid any possible interference.)

    Method 1: Enter nmtui, go down to Activate a connection and activate one of the detected wifi networks.

    Method 2: While in the scripts folder, run the wifi-connect.sh. Instructions below.

    To check your connection after, run nmcli and your wlan0 connection should be green. Make a note of your ip address. We will need this to ssh into the system later.

  • Step 6 - Set your desired screen resolution and refresh rate in the screen-mode file. sudo nano /config/scripts/screen-mode and change to your desired specifications. Format is WxH@fps -- Common values would be 1920x1080@60, 1920x1080@120. 1280x720@60, 1280x720@120

  • Step 7 (optional) - Set your WFB-ng channel in /etc/wifibroadcast.cfg and transfer your gs.key to /etc (A standard gs.key and drone.key are now provided)

  • Step 8 - Shutdown the system, disconnect the keyboard, and connect your wifi card. Boot the system and SSH from a separate computer.

  • Step 9 - Test the system. Run wfb-cli gs and plug in your camera. Make sure you are properly getting video and telemetry packets. Hit CTRL-C to exit the wfb-cli. Run sudo systemctl start openipc.service and the display connected to the radxa should change to your video feed. Press your DVR button. The stream should stop (the screen will go black for a second) and a new stream being recorded should start. Press the dvr button again to stop the saving stream and go back to the display stream. (Again, the stream should go black for a second. If it doesn't, press the button again) Confirm there is a .mp4 video file in /media by going to x.x.x.x:8080 in a browser, replacing x.x.x.x with your radxa's ip address. . Run sudo systemctl stop openipc.service to stop testing.

  • Step 10 - Last and final step. Once you have confirmed the system is working and you have set your desired settings, run sudo systemctl enable openipc.service to have the stream begin on boot.

How to flash the image to your onboard emmc

On first boot, connect a keyboard and login is root/root (user/password is radxa/radxa)

Run ./resizefs.sh to repartition and resize your filesystem. Ignore all the red text and let the script finish.

Run wfb_keygen (located in your path) and transfer the keys. Run sudo cp gs.key /etc to transfer your gs.key to the groundstation's /etc directory. To transfer the drone.key file, connect your camera and radxa to your home network, then run scp drone.key [email protected]:/etc and replace x.x.x.x with your camera's local ip address. (You will need to set up your network accordingly.)

Stock settings will set the display to 1920x1080@60fps. You will want to change this behavior in the screen-mode file in the scripts folder found in your home directory. -- sudo nano /config/screen-mode
e.g. for HDZ goggles -- change to 1280x720@100

The recommended way of connecting to your home network with the onboard wifi is to use the nmtui command. Enter nmtui, go down to Activate a connection and activate one of the detected wifi networks.

You can use the handy wifi-connect.sh script found in the scripts folder. Run the script with your home network name and password as follows: ./wifi-connect.sh NetworkName NetworkPassword. Replace NetworkName and NetworkPassword with your home network credentials.

You can also manually setup the onboard wifi for SSH connectivity. (udev rules and networkmanager are already configured in this image, you only need to execute the nmcli commands)

This image includes DVR functionality; It requires a push button to be installed to the gpio header between physical pins 25 and 27 like so:

radxagpio

To record DVR, push the button once. The preview stream will end and the the recording stream will start; DVR will begin recording. When finished, push the button once to stop the recording and save the file. The recording stream will end and the preview stream will return.

DVR is saved to the media folder in your root directory. DVR can be accessed either at /media or via a media server. Connect your groundstation to your home network and it can be accessed via a web browser at x.x.x.x:8080 -- replace x.x.x.x with your groundstation's local ip address.

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