EMAX BabyHawk 2 HD 03 Add SBUS
This is a tutorial on how to add the SBUS to the FC board and Software update to get the DJI remote working the the Babyhawk system, The big challenge was getting the remote to work while the TBS system was connected, I was not getting any response while the TBS system was live. Follow the Steps below to learn more.
DJI Air unit 03. Pin Layout.
* Pins 1 through to 4 are already soldered to the FC
* I Need to add Pin 5(Brown)GND and Pin 6(Yellow)SBUS
DJI 03 Air Unit
Download the DJI Assistant 2(consumer drones series) and update your air unit before doing anything, activate if needed.
Side tip. you do not need a battery plugged in for this, The air unit will power up off the USB Plug
BetaFlight configurator
Now download the BetaFlight configurator software. Link below to the download page. scroll down to the Assets part for the download files
So now i update the DJI 03 Air Unit and Downloaded the Betaflight software, now im going to Bind the 03 Air unit to my 03 goggles. when i have done this i have also binded my remote to my goggles. unlike the V2 goggles where you bind the goggles to the air unit and bind my remote to the air unit. i guess its like this because its cheaper to produce. just be mindful with the version 3 goggles if you loose signal you loose your remote functions aswell.
The binding worked no problems now onto soldering the SBUS cable and Ground cable, as you can see in betaflight
Tools for the job.
These tools workout well for the job at hand. I am glad i purchased these now, Maybe over kill but i did not want to get this wrong and cause un-necessary damage to the FC board.
As you can see from the picture on the left the DJI Air 03 Now has the SBUS and Brown cable, Top 2 cables. A Little fiddly to put in.
FC Board Layout
So currently the air 03 is connected to Tx1, RX1 ground and power on the bottom right of the diagram board. The SBus and BRown wire is not connected. see top left for the RX TX 1 pads
The TBS Crossfire Nano is connected to the TX2, RX2, 5V and ground on the bottom left of the diagram board. see top middle picture to the pad of the board. SBUS Not soldered yet.
What i need todo.
- I need to solder the Sbus yellow cable to the SBUS Pad bottom left of the board diagram ->. See picture above middle.
- I need to solder GND brown to the left of board diagram ->, See top right picture.
Done
Bottom middle is all cables in the 03 air unit.
SBUS bottom left of the board diagram. Soldered GND bottom Right picture
Soldered GND bottom left picture. Gnd Brown top left of the board diagram-> to the GND top right before soldered
Now the soldering part is done and the Quad is back together its time to setup SBUS in the software of the FC(Flight controller) board using Betaflight, I discover even after doing all the software changes the the TBS crossfire receiver was conflicting with the SBUS.
So to combat this i cut the power cable to the TBS system and put heat shrink on it, I put it under the GND cable tie to keep it safe. If i ever need to put the quad back to this its just a case of soldering back together and removing the sbus cable ->
As soon as i did this the remote was communicating with the FC board.
this is the current setup ports. should work when sbus is connected
USB VCP – MSP on
UART 1 – MSP ON (Peripherals VTX)
UART 2 – MSP no Serial RX On
(you do not need to plugin main power for this just the usb cable to the FC board)
The Receiver needs changing over to SBUS Receiver Provider. remember to save,
(you do not need to plugin main power for this just the usb cable to the FC board)
Change the on screen display(OSD) to your liking adding in the bits you want and remember to save after the changes.
(you do not need to plugin main power for this just the usb cable to the FC board)
Now its time to try the remote with the Quad to see if there talking to each other, you will need to plugin a main battery for this, you may need a fan on the 03 air unit aswell as it may overheat. have the betaflight on Receiver and plugged in. wait a few second and after the beep from the goggles , check the goggles feed is live. soon as you have this try the remote if it works brillient skip the next stage. if not then do not panic you just need to flash the firmware below. remember to save the configuration file first.
If for whatever reason the remote will not work after the receiver update. you will need to update the Firmware Radio Protocol to SBUS. this is also the firmware has not got the SBUS part of the software. so by completing this the firmware will change over to Sbus Protocol
(you do not need to plugin main power for this just the usb cable to the FC board)
If you have flashed the FC and it worked, you now have imput from the remote like i have on the Right, job done for this section onto setting up Modes
do not forget to maksure your Channel map is correct for the Roll / Pitch / Yaw / Throttle
(you need to plugin main power)
Modes, this section is to setup your remote. the way i setup my remote is as follows
as you look at the remote the buttons on the front of the remote used for N / S / M i want to use this for changing from angle to acro / air. if you select the drop down button in the Angle Colum that is AUX1 change this to auto now when you select the button on the remote this will change to AUX1. Thats it set. now i want to use the right button to arm the Quad do the same, Drop down box and select auto. I Set the Beeper to C1 same process. remember to save before doing anything else
(you need to plugin main power)
PID tuning.
I am not touching just yet. i want to see how the quad flights first
That’s it time to put my propellors on.
If you want to add the SBUS Baud now click below, Im going to go out and give the quad a go first before i do anything else.
Use the diagram and picture of my quad below to put the propellors on.
you must get this right or you are going to have all sorts of problems when you take off.
Separate your props out and ensure you have 2 sets the same and then place those in front of you how you want them on the quad, this is how i did it to try and stop any mistakes .
That went really well, i need to change the rates abit but other than that im happy. now i need to add Baud Sbus witch is lower latency when your flying
SBUS Baud Tutorial FPV Rates DJI avata 2 Bag
