Installation basics

For the GeoTagging mode the AIR Commander Entire must be connected to the Camera via Sony Multiport Cable. Multiport cable was included in your geotagging cable set.

Installation for Gremsy T3v3


  • Let’s start with mount of Power Adaptor to the Gremsy gimbal
  • Connect included Gremsy power cable to the PWT OUT of the gimbal
  • Connect power cable to the lower connector (at the photo)
  • Use double self-adhesive tape, Zip Ties or self-adhesive zipper


  • Mount the Entire unit at the other side of the bottom of gimbal.
  • SD Card should be aimed outside of the gimbal for easy handling in the fields.
  • Use double self-adhesive tape or self-adhesive zipper is suggested.


  • Connect Power Adaptor to the Entire (PWR connector) via Power cable
  • Connect Gremsy AUX port to the UNI A port of the Entire by AUX Cable


  • AUX Cable has two separate twisted groups of cables. One has red wire included and is connected to UNI-A of the Entire. Second group of cables with single wire connectors at the end are unused AUX pins.

  • Unused pins of AUX port (black wires) can be used for any additional connection same way as original AUX cable included to the gimbal. In our case we remove these pins from AUX connector because all data and control signals are transferred via UNI-A connection.


  • Clean up wires under the gimbal by Zip Tie.


  • Mount the Camera and connect Multiport cable to the USBMULTI connector of the Entire


  • Entire is able to control the camera instead of USB also via IR commands. IR commands are the only way to access and navigate in the MENU, also IR commands allows user to use shortcuts (user mappable in the camera MENU) at LEFT/RIGHT/DOWN arrows.
  • Use EXT Cable with IR LED and red sync wire and connect it to the EXT port of the Entire
  • Mount IR LED to the IR sensor of your camera (remember to enable RemoteCtrl function in the Camera menu). Optionally you can use our IR LED mount (not included).


  • Insert HotShoe connector into HotShoe connector of the Camera
  • Connect the red wire from EXT cable to the HotShoe connector
  • Mount top bracket of the gimbal to the rest of HotShoe of the Camera
  •  function in the Camera menu). Optionally you can use our IR LED mount (not included).


  • Entire uses multiple simultaneous connections to access all necessary data for geotagging. At the top of the gimbal we need to provide you back the rest of unused AUX port pins and also interconnect the COM port. For this we use Interconnection board which is mounted at the top of Circular Damping Mount, however can be attached at any other mount you would like to use.
  • Insert two screws to Interconnection board and attach distance tubes as per photo
  • Mount the Interconnection board and pay attention to orientation to AUX and COM ports below the mount.
  • Interconnect Gremsy AUX at Quick Release to -> GIMBAL AUX port at the Interconnection board
  • Interconnect Gremsy COM at Quick Release to -> GIMBAL COM port at the Interconnection board
  • Port named EXTERN-AUX at the Interconnection board can be used for any other connection used at your drone by original Gremsy AUX cable


  • Extension BOX is very important in our design. This little unit is used to transfer multiple data signals via only two wires to the Entire. Extension BOX has four UNI ports which are multiplexed to the DATA connection and transferred to the Entire.
  • Extension BOX should be mounted at the drone body.
  • There are two connections of the Extension BOX to the Interconnection board. One is DATA transfer of all UNI ports to the Entire, second is used to read the data stream from the Gremsy COM port for reading of actual gimbal angles.
    • Connection 1 – Use UNI cable and connect DATA port of the Extension BOX to the DATA port of the Interconnection board

    • Connection 2 Use UNI cable and connect PORTx DJI of Interconnection board to the UNI-3 of the Entire


  •  Remove the top plastic cover of DJI M600 Center Frame
  • *Connect SBUS cable to the F3 port of your A3/N3
  • Connect API cable to the API connector of your A3/N3


  • Thread the cable (or cables) down through the body of the drone


  • SBUS and API Cables threaded through the center frame now must be connected into the Extension BOX.
  • Use UNI-1 for SBUS (PWM) and port UNI-3 for DJI API cable.
    • (You are free to use any port, UNI-1 & UNI-3 are used here to match next steps of this manual)


  • Connect the drone via USB to DJI Assistant
  • Select A3 / N3 unit
  • In the MENU select “SDK”
  • Configure Baud rate 230400 (default)
  • Timestamp 1Hz
  • Attitude Quaternions 100Hz
  • Position 100Hz
  • RTK 100Hz (If RTK is used)
  • Gimbal Data 100Hz
  • Flight Status 100Hz
  • All other fields set as “Do Not Send”
  • Click to Enable API if not enabled

notice: This step is critical, majority of issues is caused by wrong settings of API.


If you would like to add FIX TYPE and HDOP value to the TEXT LOG geotagging output, then you need to additionally enable:

  • GPS – 1Hz


If you would like to use DJI -> JETI telemetry conversion, you need to additionally enable:

  • Velocity – 1Hz
  • GPS – 1Hz
  • Battery Level – 1Hz

STEP 13 *

  • *In the MENU select “Tools”
  • *Switch to “Function Channels”
  • *Select port F3 as Shutter

STEP 14 *

  • *Switch to “Shutter” page
  • *Configure
    • Shutter Trigger PWM to 1900
    • Shutter Default PWM to 1000
    • Shutter PWM frequency 50Hz
    • Shutter PWM Active 400ms

*for DJI M300 PWM triggering is not available


  • Following settings is valid for Gremsy Firmware v7.5.4
  • Power on the Gimbal and connect the gTune application to the gimbal via BlueTooth or WiFi
  • Click to SETTINGS -> CONTROLS -> Confirm YES
  • Set MSG RATE of all to 0 only ORINETATION set to 20 (20Hz)
  • Once configuration is done, you can switch back for SBUS or LightBridge control method (LB2)
  • If you would like to use LightBridge (LB2) control mode via CAN, enable “Force SBUS mode” feature in the Entire’s MENU under Gremsy options same as for SBUS mode.


  • Power ON the Drone and the Gimbal
  • Check if the Entire is powered ON via Power Adaptor
  • Check if the Extension BOX is ready (blinking blue or green)
  • Once Entire becomes ready (STATUS Blue) use your phone or any other WiFi equipped device and access Entire’s WiFi hotspot.
  • Open Entire’s configuration page at http://entire or for apple devices.
  • Firstly check if Entire is running latest firmware (MENU – Firmware) at:
  • Entire FW update can also contain firmware update for the Extension BOX. If does, the Entire will update FW in the Extension BOX automatically. Process takes only few seconds, however during the update Extension BOX is available and STATUS LED is OFF. Entire’s STATUS LED is Purple during the update. Do not disconnect Extension BOX during update!


  • Click to “UNI port A” bar at the overview page
  • In new window select the Extension BOX mode
  • Bar should become highlighted “online” after few seconds (or orange for FW update)
  • Extension BOX should start blinking GREEN (Active)
  • At the overview page you should now get four new UNI ports available (1/2/3/4)


  • Click to “UNI port 3” bar and in new window select DJI. Port should become “online” in few seconds.


  • Number under icon is actual refresh rate of GPS information


  • Click to “UNI port 2” bar and in new window select Gremsy.
  • Port should become “online” in few seconds.

STEP 20 *

  • *Switch UNI-1 to PWM mode
  • *Open Menu – SBUS mapping
  • *Select “Trigger photo” in “Functions” section
  • *Assign Cannel to #1 (channel one is PWM input)
  • *Configure trigger to upper half of the range
  • *When shutter button on DJI Transmitter is pressed, white arrow should move into blue part of slider and the Entire should now trigger photo.

STEP 21 a

  • Turn the camera USB mode to MASS STORAGE
  • Navigate to Camera MENU -> SETUP->USB Connection
    • Set to Mass Storage
    • confirm OK
  • For newer cameras (like A7RIV) is this step bit more complicated:
    • Check if MENU->NETWORK->Ctrl w/ Smartphone is OFF
    • Check if MENU->NETWORK->PC Remote Function is OFF
    • Navigate to Camera MENU -> SETUP->USB Connection
      • Set to Mass Storage
      • confirm OK

STEP 21 b

  • Enable GeoTagging via MENU->Logging mode-> Direct EXIF (or SD card)
  • Enable HotShoe capturing via MENU->Capture detection->Hotshoe sync
  • Now you can also preview GPS data and gimbal angles in the Entire’s GUI
  • MENU->(Geotagging)Settings->GPS Data Preview
  • Data shown in the preview are updated online and should react to gimbal movements


  • Enable “Add XMP geotag data” option.
  • This option enables XMP geotagging which contains camera angles.


  • Open the MENU -> Miscellaneous
  • Scroll down to GeoTagging features
  • And insert X, Y, Z offsets.
  • When GPS is used, offset is counted from body center (if correct offset is configured in the FC). If your flight controller does not have configured antennas offsets, configure offset from the camera to the antenna.
  • When RTK is used, offset is counted from body center (if correct offset is configured in the FC). If your flight controller does not have configured antennas offsets, configure offset from the camera to the antenna A.

Offset is in millimeters!


  • Your setup is ready to be used at this point
  • Entire has Self-Test routines for GeoTagging to easily check if all wiring is working well
  • Make sure that all equipment is turned ON and camera is set to MASS STORAGE MODE
  • Click to MENU->Configuration test and let the Entire to do a self-test
    • At the beginning of the test, one photo will be triggered
    • Entire will check if HotShoe sensor has properly recognized trigger
    • Entire will check all necessary input data connections
    • In case of any problems, result will provide hints to solve the issue
    • Test photo will not be geotagged in the test method!
Installation for Gremsy T3v2

Our installation set is directly compatible ONLY for v3 gimbals (T3v3 S1v3 and so on, and T7).

  • Optionally you can use any gremsy gimbal with COM port, however wiring must be customized.
  • Check image for T3v2 rework wiring –>
  • Once wiring is reworked, follow installation steps for T3v3
Overall wiring scheme
Options of Gremsy connection
  • Gimbal control
    This  option is used to control of the gimbal Pitch and Yaw via AIR Commander Link.
  • Force SBUS mode
    This option forces gimbal to use SBUS mode. At latest firmwares of the Gremsy (765 and later), gimbal locks in MavLink mode, once Entire is connected. Entire can force gimbal to use SBUS mode via MavLink (with this option enabled). You have to set gimbal to SBUS control mode also via gTune app. If you would like to use LB2 mode of the gimbal, you also have to enable this feature. If you would like to use MavLink control of the gimbal, leave this option disabled and enableMavLink forwarding“.
  • MavLink forwarding
    With this option enabled will the Entire forward all input MavLink data (received from PixHawk)  to the Gremsy gimbal and also all data received from the gimbal are forwarded to the PixHawk. This option is used when gimbal is controlled via MavLink ot you need to get direct communication with gimbal for example from ground station.
  • Gimbal tuning (Herelink)
    This option enables remote configuration of stabilization parameters. Remote settings of those values are available only from MavCam (HereLink app).