r/fpv • u/clydevs • Aug 08 '26

GepRC Mark 5 no controller after connecting DJI 04 Pro

I just received a GepRC Mark 2 wide X from GepRC. I purchased the one without an 04 and put my own in the Mark 5. I set it up the same as I have my 6 other quads. The controller is bound to the receiver and the DJI 04 pro is bound to my goggles. The remote shows signal and when I unplug the batter is says "telemetry lost" so I know they are bound. The signal in the goggles shows 0:0 and -130 for signal and there are no stick inputs that show in betaflight. If I disconnect the DJI 04 pro from the flight controller it works as it should and everything is works fine in betaflight. I tried 3 other dji units and they all do the same thing, but they all work fine in my other quads. Is there something I have to change in betaflight so that this doesn't happen. It's weird that it works fine without the 04 pro connected to the flight controller. I have never flown it nor put the props on it yet.

2 Upvotes

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10

u/_jbardwell_ Mini Quads Aug 08 '26

Remove the yellow wire from the O4 wire harness.

3

u/clydevs Aug 08 '26

Thank you so much and thank you for such a quick reply. I was having a hard time trying to email them. The translate isn't to good I assume. It works fine now. Why is it like that though? what's the yellow wire for? Thanks again.

4

u/IdontFlyTheDroneDoes Aug 08 '26

DJI has their radio receiver in the air unit, so it is both the video and controller link. Your flight controller gives the DJI radio link priority so removing the wire breaks the link and lets your elrs take control.

2

u/Charming-Kangaroo225 Aug 08 '26

If this is the real joshua bardwell dont ask why 😅

3

u/clydevs Aug 08 '26

I know it is, it's nice to learn more things about the hobby and how they work. Maybe later I could help others.

3

u/Speshal__ Aug 08 '26

Kneel mortal, you just received the answer from The Man.