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joplin-mdbooks-website/content/ardupilot/installing-wtfos-on-dji.md
Stavros Korokithakis 310a73bad9
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2023-01-20 13:31:19 +02:00

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Installing WTFOS on DJI

The WTFOS OSD is basically a higher-res analog OSD that you can get on DJI goggles. It gives you everything the analog OSD gives you, so configuration menus, OSD elements, post-flight details, etc.

Here's the process to install it:

On everything

  • Make sure you're on version V01.00.0606 on whatever you want to root.
  • If you're rooting an AU or Vista, use a fan to cool it down during this process.
  • Go to the WTFOS Configurator's Root section and click "Root device". Click on your device on the permission popup and continue. Wait until done. DO NOT REBOOT WHEN IT'S DONE.
  • Each step (there are five in total) should take around a minute to continue. If it takes longer, it's probably gone wrong, but it should be safe to just reboot the goggles/AU and try again. At least, it's never caused me a problem so far, and I've done it many times.
  • Once that's done, go to the WTFOS Installer section and click "connect to device", and then "Install WTFOS".
  • After installation is done (or if you're upgrading), go to the Package Manager section, and install fcc-unlock (for full power) and msp-osd. You can also install auto-record on the goggles, for automatically recording if your video link goes away and comes back. The rest probably isn't necessary.

On the goggles

  • Disable the custom OSD: Settings -> Display -> Custom OSD: Off.
  • Download the font files from the ArduCustom repository. Make sure to get the four fonts ending in .bin.
  • If they aren't already, rename them to add _ardu to the name after font (so font_ardu.bin, font_ardu_2.bin, font_ardu_hd.bin, font_ardu_hd_2.bin).
  • Put the four font files in the root of the goggles' SD card.
  • Go to the console and run, to enable MSP OSD recording: 
    package-config set msp-osd rec_enabled true
package-config apply msp-osd

On the plane

  • Set SERIALn_PROTOCOL=42 for DisplayPort, OSD_TYPE=5 for MSP_DISPLAYPORT and OSDn_TXT_RES=1 for 50x18 text resolution on the craft.
  • Arrange your OSD elements as you want them.

That's all!

Last updated on January 20, 2023. For any questions/feedback, email me at hi@stavros.io.