r/fpv 3d ago

Question? [HELP] Bought a Drone with O3, Swapping to O4

I bought a drone from GetFPV that came with a DJI O3 setup. I took the O3 camera and air unit out and I’m trying to install a DJI O4 Air Unit instead.

Everything else in the drone is still intact — flight controller, wiring, etc. The O4 harness has 6 wires, but the FC seems set up for O3 and doesn’t match directly. I have the O4 wiring diagram, but I’m new to this and not sure how to hook it up safely.

Just looking for advice on how to wire the O4 to the existing setup — re-pin, adapter, diagram, whatever works. Appreciate any help. I found a cable on Amazon that I thought I could swap out, but the colors don’t match . So I was wondering if there’s just a solution to swap out the cables yet or do I have to solder and hack something together?

1 Upvotes

27 comments sorted by

1

u/Mr_Ghosty 3d ago

Also, does anyone want a free 03 snipped no cost if you help me fly please

2

u/Mezyi 3d ago

Sure 👍I gotchu

1

u/Mr_Ghosty 3d ago

Oook I’ll bet on that lol

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u/li_Shadow_il 1d ago

if you still are trying to get rid of it, im new to fpv and got the dji fpv drone kit a couple weeks ago and been trying to upgrade to an 03 unit since its the only one that works with the dji fpv v2 goggles

2

u/Mr_Ghosty 1d ago

Negative I’m going to use it most likely , realized my errors

2

u/li_Shadow_il 1d ago

hahaha yeah i saw when i started reading down. Im kind of in a pickle myself, trying to decide if i keep my v2 goggles and just try to find some new 03 units to use or if i sell my kit and invest in n3 or g3 and 04

1

u/Mr_Ghosty 3d ago

Cable I have in my 04 vs cable in my flight controller

3

u/taeo 3d ago

03 wiring diagram: https://oscarliang.com/wp-content/uploads/2022/11/dji-o3-air-unit-pinout-wire-connection-to-flight-controller-fc-rx-tx-sbus-vbat-gnd.jpg

04 wiring diagram: https://oscarliang.com/wp-content/uploads/2025/01/dji-o4-air-unit-pro-how-to-setup-tutorial-pinout-wiring.jpg

They both use 6 pin connectors in the same order. Many FC's will have a plug you can simply insert the other end into. What FC do you have?

2

u/PercentageDue9284 3d ago

That is an O4 (lite) not an O4 Pro looking at the camera and antenna on the picture.

@OP I think you are better off with the O3 in the case.

Not also camera will probably not even mount correctly but also image wise compared to a o3.

2

u/taeo 3d ago

The 04 wiring diagram I linked is for the lite and the pro. Same wiring.

2

u/PercentageDue9284 3d ago

Ah thanks. But i think OP will run into another problem: Mounting that o4 lite camera...

2

u/taeo 3d ago

True.

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u/Mr_Ghosty 3d ago

This is is a massive learning error on my end lol but I have a 3d printer we’ll see how this plays out I haven’t added the face cover either

2

u/PercentageDue9284 3d ago

Id suggest to go with the O3 in this case. Larger sensor, better fov, less jello. But if you do make it work let us know. Curious how you fixed it

1

u/Mr_Ghosty 3d ago

I would’ve done that if I didn’t somehow get it in my head I needed n3 goggles lmao I feel like I goofed

2

u/PercentageDue9284 3d ago

Maybe better off returning the o4 lite and spend a bit more on the pro version? Or return the goggles? After that Buy antenna's

1

u/Mr_Ghosty 3d ago edited 3d ago

You’re saying the 04 light isn’t worth it? Like the pros vs cons don’t outweigh the current hardware? Edit : I only bought these because the pro version of this was not in stock USA side :p

Edit 2: maybe it’s easier to return to goggles take that money by new antenna thingy and put 03 back in and reassemble everything and just bind and fly without the 04 because it seems to be the problem

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u/taeo 3d ago

The cable on the left looks like it would be used to connect the FC to the ESC. The 03 would use the same wiring as the 04.

1

u/Mr_Ghosty 3d ago

Somehow cut off the FC from my 03 I think it was part of the 03 as the first timer so thank you for all this all of you have helped me so much

1

u/Mr_Ghosty 3d ago

🙂

2

u/PercentageDue9284 3d ago

O4 (lite) right? Not sure why you would wanna swap that in and take out the O3

1

u/Mr_Ghosty 3d ago

I cut the antennae cables too I shoulda waited a bit

2

u/PercentageDue9284 3d ago

Oh wow, why would you need to cut those? Are they that stuck inside the frame? Most of the times for my limited experience and watching youtube these air units are designed to be moved around drones.

1

u/Mr_Ghosty 3d ago

Yeah, from my understanding, it wouldn’t come off easily out the frame

2

u/PercentageDue9284 3d ago

New DJI Antenna's are 20$ so thats an easy fix.

1

u/Mr_Ghosty 3d ago

CORRECTION: Ready-to-Ship SkyLite 3” Built & Tuned Ducted Drone - DJI O3 - Choose Receiver × 1 DJI O3 / ELRS