DJI Digital FPV System - DJI Air Unit Wiring Guide & Betaflight Setup

[@ViperFPV]

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[@Flyingwoodchuck51]

I bought this unit to use as a stand alone fpv platform on an airplane. I don't have a flight controller I'll be using just the receiver and power lead to power on the camera. Will that work?

[@user-rx8qq8sk9ydv1ce5ib]

Thanks for sharing, Would be great to show how the control surface 6 channels of an aircraft would be connected to the dji air unit to use the dji transmitter to fly a fixed wing airplane. Or maybe you can make a video on how to power the dji air unit in case going to use a spektrum tx and rx , could the AU be powered from the rx or the 6s Lipo balance lead? Thanks. No idea what is the flight control since it is not used in fixed wing aircrafts.

[@techFPV5964]

Very interesting video for me because my quads are analog so I'm researching how to install Air units or I may just go ahead and buy a quad with the unit installed. I'm not very good at soldering and some of those pads on the FC are really tiny...Ugh!✈️🐾

[@jamesalfrey2916]

I liked your video. I am more fixed wing and new to the fpv and have the dji caddx Vista along with dji goggles 2. Need more info of the powering the matek F722 HD to ready to use. I have the goggles set up by dji, but not the caddx, because of some confusion of wiring and power placement if I can get a little help...😏

[@SunriseWaterMedia]

1:45 If i wanted to power it directly without a flight controller (for use on an RC car), should i connect the red cable to the red lipo cable, and black to black? That might be a dumb question, but I noticed you said that RX goes to TX and vice versa (which confuses the heck out of me -- I still don't get the logic), so I wanted to check.

[@RiceRoll89]

I have this exact same flight controller and I had to switch the UART wires (grey and white wires) around the other way to get the OSD to work. Also I wired up the power to the 9V regulator on the board and that also works.

[@ViperFPV]

Yes!

[@glitchy8429]

I was going to say, you should see much more consistent performance powered from a regulator, and since you are already having to take signal wires to the flight controller, having power and ground coming from the flight controller gives the system a common ground so you don’t run into noise or osd issues. Powering from vbatt allows all the system noise into the vtx first, and then carries all that noise to the flight controller instead of away from it. Brown outs on the 9v reg means it’s a bad 9v reg.

[@Hitngan]

Looks like you bridged the rx and tx UART connections when you soldered the leads.

[@chrissofpv3017]

Helped tons....super! ,BUT if I,m using Crossfire and Tango2 radio ....is the CLI "Sbus baud fast= ON" still necessary?

[@ViperFPV]

CHRISSO FPV no it’s not

[@chrissofpv3017]

@@ViperFPV ..ah..thanks sir, appreciate that clarification. SUBBED 👍🍻

[@MystikSquash]

Yay! The best video I’ve watched today 👌 I was having radio issues but with help from the cli command everything’s going great.

[@ViperFPV]

Awesome! Glad it helped

[@meeiu]

@@ViperFPV I had same problem! CLI solved everything!! thank you so much. Just curious, what does sbus_baud_fast do?

[@ryosfpv9789]

Cheers.... My air unit wasn't giving me osd... The cli sbus baud rate tip.. solved it.. Thank you sir!!

[@QuickSticks8771]

hey mate hoping you can help I have a new original air unit and v2 goggles , it powers up via plugs to my fc ,binds fine but I get no video just the black screen with the DJI logo any suggestions of something I may be missing ?? thank you

[@manuelfalcon334]

Thank you for your quick response..... yes i did I even switched uart just to make sure that uart wasn’t damaged... if any ideas please let me know

[@ViperFPV]

Manuel Falcon can u take a pic of your wiring? And your ports tab and email it to me?

[@rokiesinclair]

Hi, Thanks for the Info. I am using DJi Fpv System (total) would you mind where to wire all of the cables? Thanks

[@aerialclone_official]

Nice video! why you didn't use the 9V pad in FC and wire up all together with the TX3 ?

[@ViperFPV]

Aerial Clone not sure what you mean by the tx3 but regarding why I did not use 9v pad because the 9v pad is only rated for like a amp and the air unit draws more than that

[@aerialclone_official]

@@ViperFPV I meant the UART3 for the vtx. I thougt the 9V was there for the Air Unit :/ and the UART6 is for telemetry in case you want to use it.I have the same FC and I switch to digital now that's why I am asking :P

[@Rc_Dread]

Hey guy, do you know how to get vehicle sound into dji goggles

[@devilcfpv2621]

OK so question I see you have a cap on your arm your power wires is that for you to be able to run 6S because I have a 5 inch quad and I’m trying to run 6S and I have the DJI air unit and every time I plug in my battery that is 6S the camera freaks the fuck out soooo I was told I either needed that or I either needed a BEC can u help me out lol

[@bkudell]

2 Questions. I am using a T-Motor F7 55A DJI Stack and TBS Crossfire Nano RX. I used the wiring harness that connects the Air Unit directly to the FC (plug-n-play). I de-pinned the Brown and Yellow wires because I am not using the DJI Controller. I connected the TBS Nano RX to a 5V, Gnd, T5, and R5 pad on the FC. Because the FC is designed for DJI and is 6S capable I shouldn't need a regulator as the wiring harness connects into the FC on a Gnd and 10V connection. Am I right in my thinking and approach. The link to the T-motor Stack is attached. My second question. Your Betaflight setup was kinda confusing because I believe you were giving information about using either the TBS or DJI Controller. In my case, I just need to select UART 2 Configuration/MSP - ON and UART 5 Serial RX - ON. Thanks for the help. uav-en.tmotor.com/html/2019/FlightControllers_1218/310.html

[@ViperFPV]

Yes the DJI stack FC will handle the voltage requirement. And you are correct on the betaflight setup

[@MCsCreations]

Really nice job, dude! Thanks! 😊

[@cnbsdad]

Question. Building a quad using the DJI combo, goggles, transmitter and air unit with a Momba 405 DJI stack. Am I right if the only soldering I’m doing is for the battery leads and motors?

[@ViperFPV]

cnbsdad absolutely correct.

[@cnbsdad]

Viper_FPV thank you so much for the quick reply. Appreciate it. Your video was very informative. Keep them coming

[@ViperFPV]

cnbsdad thank you

[@mikelanzo9872]

I am a total noob doing a first build and seem to have chosen every possible challenge with my component selections... I am running a Mamba F722, like in this video and looking to connect a DJI for video feed and OSD info. My RX is the new Spektrum SPM4650 SRXL2 serial RX and it’s connected to UART 6 (TX tab) for Serial communication and is working fine. You have used UART 6 in this video as well ... As I don’t plan on changing radio gear at this time. Can either my RX or the Air Unit go on a different UART and still work / provide OSD data to the goggles?

[@ViperFPV]

Yes u can use any uart

[@mikelanzo9872]

Viper_FPV thanks 👍🏻 I think I might try and remove the bulky aluminum case off the air unit to save some space and try and mount the 2 x internal DJI boards directly into the quad somehow. Does not seem like anyone has tried this from what I have found. Could be because of heat issues as the case seems to have some cooling fins. We will see...

[@ViperFPV]

Mike Lanzo u can try it the caddx vista is pretty compact also

[@mikelanzo9872]

Viper_FPV if only it had SD card 😫 I don’t want to have to mount a GoPro if I can avoid it

[@ViperFPV]

Mike Lanzo yeah no sd card

[@rickrossmechanic65]

Hey how you doing, I have a dji m600 with a lightbridge setup on it. I haven’t been able to see no video out of the camera on the app and both lights are green. So I’m about to replace it with this fpv air unit. Can you inform me if I have to do this same thing??

[@ViperFPV]

What goggles are you using?

[@rickm1283]

Great video ...sbus is my preference but nice to see crossfire how to.

[@timmytfpv7316]

Thank you for this . Any chance of some advice ? I built a 3inch using mini f7 plug n play with dji air unit after building i powered up with a smoke stopper lol just in case everything is perfect powers on normal cable from fc to air unit is plugged in all is good but no video or remote control ? Though the goggles i can navigate the menus ? Not sure if that matters i tested the air unit in another drone and works perfect video and powers up motors etc ? Any ideas i really appreciate your time thank you

[@ViperFPV]

Did u bind the goggles with the vista?

[@timmytfpv7316]

@@ViperFPV yes its a air unit that was in another drone

[@CryptoT1]

Hi great vid I have a question I can't seem to find online maybe you can help I'm looking to buy a ready made drone from banggood with a dji air unit build in but could I use normal goggles or does it only work with dji goggles? Anyways thanks for you time ✌

[@ViperFPV]

Crypto Turk the DJI air unit only talks to the DJI goggles all the other goggles will not work.

[@CryptoT1]

@@ViperFPV thanks for advice bro👌 I'm looking at the flywoo explorer Lr but debating whether to get the air unit or not

[@ViperFPV]

Crypto Turk that’s a 400-500 dollar commitment for the goggles. For my personal experience the DJI goggles image is amazing. If u plan on racing I would not recommend it tho due to latency and weights of the units.

[@CryptoT1]

@@ViperFPV is definitely a big purchase for sure I'm stuck between buying one with air unit or without one and use an insta 360 or gopro I think either way its gonna add up. I'm not looking to race as such more videos making and freestyle. Just trying to find the right balance for the right price no point wasting money at the start I was even looking at dji mavic air 2 but won't be able to get the good freestyle shots 🤔 decisions decisions lol

[@ViperFPV]

Crypto Turk well good luck I don’t regret getting the DJI system it’s awesome. But I still do like my analog

[@silvijazivic8827]

Nice work! I'm new to fpv, should I do it myself or let the experts do it? I have the Apex 5 from steele. That would be too risky

[@ViperFPV]

Not sure if your question

[@manuelfalcon334]

What’s up buddy need help man.... I can’t get the osd to work I have done all the steps you have posted which helped a lot I thought it was the air unit and I got another one and same thing the only thing I can get it to do is the step in the CLI I can’t get it to turn one please please please help I’m going nuts.... thank you in advance

[@ViperFPV]

Manuel Falcon have u tried switching your rx and TX wires around? If not try it and let me lnow

[@swetunafpv1856]

I have a 5 inch quad and i get: VTX not setup correctly. I have Kakute F7 mini V3 and dji air unit and controll it with tbs crossfire. any idea how to fix the vtx problem? the air unit it connects with fast connectors (plugs) and its not soldered to an T2 or T3 etc. if im bad at explaining just ask questions its ok :) And when im flying the quad in acro mode it behaves like im in horison mode that is also an issue i have with it.

[@rickrossmechanic65]

I got the latency goggles and the fpv air unit, and I have a DJI m600 or s1000 which ever. The lightbridge system is not working it shows a black screen when I’m logged into the app. So I bought the setup your describing and I won’t to install it on the m600. Can you tell me where to place the wires ??

[@ViperFPV]

I’m sorry but I don’t know anything about those drones.

[@DannyHollandHollywood]

Hey man, I am new to FPV drones (with regards to building) but an experience commercially qualified drone pilot and I need some help. You talk about an BEC regulator to get the DJI kit to work. Could you please send me some links for push me in the correct direction please. Will be using this video when I'm building mine as looking at getting an Iflight s6 but want the DJI set up.

[@SunriseWaterMedia]

8:10 what does that last CLI command do?

[@bryanwhite4651]

was wondering this too, might have something to do with crossfire?

[@petrpolak8875]

Where goes the sbus cable? I have geprc croc5 hd with air unit and tbs nano but my vtx is still not working. Any ideas?

[@pedronhfd6969]

Viper nice video my friend. so is completely safe to connect the air unit straight to the battery (4s)?

[@ViperFPV]

Yes on 4s

[@patricksharp3355]

@@ViperFPV is it ok to connect it straight to the battery on a 3s as well?

[@ViperFPV]

Patrick Sharp yes anything over 4s is a no no

[@patricksharp3355]

@@ViperFPV Thank you

[@rchaze]

Going into cli command the baud change is for the dji transmitter only? Correct.

[@dnafpv]

RcHaze that’s what I’m assuming? Did you ever get confirmation?

[@rchaze]

@@dnafpv not really but I dont use their transmitter anyway. Quad flies good with dji

[@lungomaburfpv1425]

Mr Viper, I have Mamba F722 mini. After firmware v4.1.5 has 6 Uarts, are: Uart1 to Receiver Frsky, Uart2 to ESC Telemetry, Uart3 to Smart Audio VTX, Uart4 free Uart5 to GPS, Uart6 free (ex TBS Nano) I will install Caddx Vista. Please give me inform. Where UART for connect Rx Tx cable air unit?

[@ViperFPV]

Uart 4 since it’s the only free one you have. But you can always do a soft serial and put smartaudio on it and then use uart 3 so you have one still free.

[@patrickfrensdorff7485]

What i am stil missing is a video about filters with the dji system. As we do not need filters for analog feed,but only a good flying quad as dji system gives best quality image possible.

[@ViperFPV]

Patrick Frensdorff there is no video filters. I think u are getting confused with betaflight gyro, and notch filters.

[@AerialPixel]

Your flight controller has regulated 9V, why didn't you solder to that instead of the battery? Voltage range for the Air Unit is 7.4-17.6V. Is there a reason for for soldering directly to the battery instead of the 9V on the FC?

[@ViperFPV]

Yes because the air unit draws too many amps for the tiny 9v regulator to handle.

[@AerialPixel]

@@ViperFPV Gotcha, I had seen several other tutorials and they had an 8V pad that they were soldering to. I took your advice and soldered directly to the battery pads.

[@TheCiardellas]

The tx goes to rx and rx to tx?

[@ViperFPV]

Raydio Show indeed

[@TheCiardellas]

Got it Hey I’m trying to hook up the dji system to my diatone 369 board.. it’s a F7 I want to use the dji radio so I hooked the yellow wire to the sbus.. it’s not working So then I tried hooking it to my diatone cube which has the mamba 411 something or other board Still isn’t working I don’t get any level change on the receiver tab Any suggestions?

[@BubbyFPV]

Raydio show i have the same problem, did you figure it out?

[@klawz1801]

Hey, how do I wire it into a wing? I have the wing, motor, esc and battery... what else do I need to wire it to the wing?

[@ViperFPV]

Super easy does your wing have a FC or a gyro? Just need to know because that will change how it’s wired up

[@klawz1801]

Viper_FPV nah it’s a simple wing I’ve made from scratch so far I have the servos, motor, esc, receiver for the remote and battery wired up... I’m new to fpv

[@klawz1801]

Viper_FPV I messaged u on insta 🤙

[@rsugdenmd]

Viper - do you have any experience w. the DJI FPV Goggles/ Air Unit / DJI RC Controller? I have an iFlight MegaBee, configured from the factory w. the DJI Air Unit, connected to the controller board (no receiver) which I've linked to my Goggles and DJI RC Controller .. but cannot get BetaFlight to connect and cannot get the motors to arm/turn on ... Now almost a week w. DJI tech support and iFlight tech support .. and both point to the other company and neither has a clue how to configure w. BetaFlight or why the Air Unit will not connect .. whether power is applied to the drone or not ... VERY frustrating. Maybe some of your other subscribers have run into this problem and found a solution ... Thanks!

[@crispy1688]

Check out the DJI FPV Facebook group... lots of help available there

[@rickrossmechanic65]

I got the latency goggles and the fpv air unit

[@ViperFPV]

Do you have a link? I never heard of them

[@rickrossmechanic65]

The knew dji goggles

[@ViperFPV]

@@rickrossmechanic65 I’m not finding that name online

[@rickrossmechanic65]

You don’t see the DJI goggles with the 4 antennas

[@ViperFPV]

@@rickrossmechanic65 you asked about light bridge. ? Which is not compatable with the air unit or goggles.

[@rickrossmechanic65]

Ok thanks

[@geancarloszara7795]

Why to write that command on the CLI?

[@BenjaminBarakat]

I connected my air unit today to quad, activated it and powered up the quad did the first flight check. Had to change propellor direction, after that the air unit won't turn on anymore, tried connecting to a direct power supply but its still not working. Any one out there had the same trouble?

[@ViperFPV]

Benjamin Barakat I never have. it sounds like it may have died. U may need to reach out to DJI support

[@jaysway007]

Nice

[@Dorodigital]

wait wait i clearly heard him wire the white and gray wires to uart four then later in the video hes say uart 6 ...am i goin crazy???

[@rickrossmechanic65]

Hey did you understand what I’m asking

[@ViperFPV]

Please email me as the conversation I can’t find it anymore

[@rickrossmechanic65]

Ok it won’t work cool, I’m trying to replace it with this new setup

[@jakester142]

DJI not DGI that drives me nuts

[@rickrossmechanic65]

Lol oh SORRY yea the DJI AIR FPV UNIT, it has the silver box connected by a black wire

[@jamesalfrey2916]

I liked your video. I am more fixed wing and new to the fpv and have the dji caddx Vista along with dji goggles 2. Need more info of the powering the matek F722 HD to ready to use. I have the goggles set up by dji, but not the caddx, because of some confusion of wiring and power placement if I can get a little help...😏