Spreading Wings 5900 

User Manual rv1.2) 

2014.12 
Disclaimer 

Thank you for purchasing the 8900. Please visit the Spreading Wings S900 page on www.dji.com regularly 

to keep up to date with product information, technical updates and manual corrections. Information in this 

manual is subject to change without notice. 

In using this product, you hereby agree to this disclaimer and signify that you have understood all points 

completely. When assembling this product, follow all instructions carefully. The manufacturer and seller 

assume no liability for any damage or injury arising from the use of this product. 

This is a class A product of the FCC certification. In a domestic environment this product may cause radio 

interference, in which case the user may be required to take adequate measures. 

DJI is a registered trademark of OJ I. Names of product, brand, etc., appearing in this manual are trademarks 

or registered trademarks of their respective owner companies. This product and manual are copyrighted by 

DJI wilh all rights reserved. No part of this product or manual shall be reproduced in any form without the prior 

written consent or authorization of OJ I. 

About 

The S900 is designed for professional aerial photography and cinematography. It is user friendly, safe, 

stabilized and easy to fly while its integrated design makes assembly and configuration simple and fast. 

Retractable landing gear, vibration dampers, slightly angled arms and a minimalized gimbal mount allow for 

a clear 360 degree view from the camera. A patented power distribution board, built-in high-speed ESCs 

and motors with high efficiency propellers ensure dynamic stability and maximized power efficiency. Used 

with a professional DJI multi-rotor autopilot system, the 8900 can hover and fly reliably making it ideal for 

photography and cinematography. 

A----- 433mm 

2 © 2014 OJ I. All Rights ReseNed. 
Contents 

Disclaimer 

About 

Contents 

Cautions 

Legend 

In The Box 

Mounting the Landing Gear 

Mounting Frame Arms 

Mounting Electronics and Wiring 

Connecting XT60 Ports on the Center Frame 

Installing Battery 

Setting Up the Landing Gear 

Mounting the Gimbal 

Appendix 

ESC Sound 

ESC LED 

Specifications 

Gain Value Settings 

FAQ 

Soldering the ESC 

Remounting the Propellers 

Propeller Precautions 

Using the Propeller Holder 

Assembling Motor Vibration Absorbers 

Remounting the Landing Gear Servo 

Recalibrating Servo Travel 

Part List 

FCC Statements 

2 

2 

3 

4 

4 

5 

6 

7 

11 

16 

16 

18 

20 

22 

22 

22 

22 

23 

24 

24 

24 

24 

25 

25 

26 

26 

27 

31 

© 2014 OJ I. All Rights Reserved. 3 
Cautions 

When flying, the rotating propellers may cause serious damage and injury. Please fly safe at all times. 

Assembly Cautions 

i. Use a bracket to mount the GPS module on the center frame to avoid interference with the power board. 

2. Ensure the IMU is mounted with the arrow pointing toward the nose of the aircraft. 

3. If using a receiver, attach it under the bottom board of the center frame with the end of the antenna 

facing downwards and away from obstructions to avoid signal loss. 

4. Ensure frame arms are mounted correctly. 

a) Motor mounts with CCW marks should be mounted to the center frame positions with the following 

marks: Mi. M3 and M5. 

b) Motor mounts with CW marks should be mounted to the center frame positions with the following 

marks: M2, M4, and M6. 

5. Do not remove any glued-in screws. 

6. Screws that already have blue glue can be used once without thread locker. On other occasions, apply 

appropriate thread locker first. 

7. The S900 should be lifted off the ground when testing landing gear or recalibrating seNo travel. 

Flight Cautions 

i. ESCs are not water-proof, please do not fly in rain or snow. 

2. Ensure all soft dampers and vibration absorbers are in good condition before every flight. If not, replace 

immediately. Otherwise, the flight performance of your aircraft will be adversely affected. 

3. Ensure all parts are in good condition before each flight. Do not fly with worn or broken parts. 

4. Ensure propellers and motors are installed correctly and propellers are unfolded before flying. 

5. Ensure ESC signal connectors and power cable connectors are tight before every flight. 

6. When flying, maintain a safe distance away from people, buildings, high-voltage lines, tall trees, water 

and other hazards. 

7. Use only 6S LiPo batteries for the power supply. 

8. Ensure all output signals from Mi to M6 are in proper working order when using the DJI A2 flight control 

system to avoid damage or injury. 

9. Do not overload the system. 

iO. Do not get close to or touch motors or propellers when they are spinning as this can cause serious injury. 

i i. Disconnect the battery and remove the camera during transportation to avoid damage or injury. 

i 2. We strongly recommend using as many DJI manufactured parts as possible. 

Others 

If you have any problems you cannot resolve, contact your dealer or DJI customer seNice. 

Legend 

L't, Important -:\): Hints and Tips 

4 © 2014 DJL All Rights Reserved 
In The Box 

Center Frame x1 

Landing Skid Tubes x2 

(with Silicone Rubber Dampers) 

oon===:::'EE~===ti][]D 

GPS Collapsible Mount x1 

Connection Cable 

Connector Set x1 

or 

3-PIN Connection Cables x8 

3-PIN SeJVo Cable x1 

Tools Required 

Tools 

2.0mm Hex Wrench, 2.5mm Hex Wrench 

Thread Locker 

Ill 

Nylon Cable Tie, Scissors, Cutting Pliers/Dykes 

Foam Double Sided Adhesive Tape 

Frame Arms x6 

Landing Gear Legs x2 

Springs x2 

Accessories Package x1 

CW propellers x2 

CCW propellers x2 

Magic tapes x4 

The red knobs x6 

Landing gear leg rings x4 

Soft dampers x50 

Screw Package x1 

For frame arms mount: M4x35 

For landing gear mount: M3x8, 

M2.5x8 (socket cap), M3x22 (socket cap) 

Usage 

Mounting screws. 

Fastening screws. 

Binding devices and wires. 

Mounting receiver, controller and other modules. 

© 2014 OJ I. All Rights fieserved 5 
Mounting the Landing Gear 

Instructions 

1. Put one landing gear leg ring onto each landing gear leg. 

2. Insert one landing gear leg into each landing skid tube and secure it in place by tightening the M2.5x8 

(socket cap) screw. Ensure silicone rubber dampers are attached to each end. 

3. Insert the landing gear leg into connection point on the center frame. Affix in place with M3x8 screws. 

4. Connect both springs on the legs to the center frame. 

-1"1· 

'\!' 

M2.5x8 (:"3 

(socket cap) lj 

• Note the springs are 58.5mm before connecting to the center frame, and are stretched to ?Omm 

when mounting is completed. 

• It is recommended that the landing gear leg ring be placed about 30mm above the landing skid tube. 

6 © 2014 DJL All Rights Reserved 
Mounting Frame Arms 

Instructions 

1. Prepare the arms. 

(1) Check all propellers for cracks, then install and screw each propeller cover on tightly. 

(2) Ensure all motors are mounted firmly and rotate freely. 

(3) Mount all arms with red propeller covers to M1 and M2 to indicate the nose of the 8900. 

(4) Identify the CW and CCW marks on the arms. Mount the arms with the CCW mark to the M1, M3 and 

M5 positions of the center frame. The arms with the CW mark should be mounted to the M2, M4 and 

M6 positions of the center frame. 

Cover 

Screw----, 

Motor -T--1\lL_ 

Propeller 

CW or CCW Mark 

LED* 

2. Insert each frame arm vertically into the mounting 

area on the center frame. 

3. Line up the screw holes of the frame arm and 

center frame. 

4. Insert the M4x35 screw from the right of the 

frame arm (the thread is located on the left of the 

screw mount). Tighten each screw correctly. Over 

tightening may lead to connector abrasion. 

Power Cable 

ESC Signal Cable 

*LED is on after motor started. 

© 2014 DJL All Rights Reserved 7 
Spreading Wings 8900 User Manual 

5. Gently lift the frame arm. 

6. Twist the red knob to lock each arm in place. Be sure there is an audible click, which indicates a proper 

lock. Check the arm for movement. To store, untwist the knob and lower the frame arm. 

i' 

7. Now unscrew 6 screws (M2.5x8 cheese) on the upper plate of the center frame and remove the upper 

plate. Then unscrew the 4 screws (M3x8 self-tapping, found under the center frame) of the round cover 

and remove it to gain access to the ESC and power cable installation area. 

8. Plug each ESC signal cable into the slot near each arm on the center frame. 

8 © 2014 DJI. All Rights Reserved 
Spreading Wings 8900 User Manual 

9. Connect the power cables to the center frame. Each cable must be screwed into a positive ( +) or negative(-) 

gold bracket. Each bracket will have two cables of the same color screwed into it. Red cables are positive 

and black cables are negative. 

10. To ensure a reliable connection, rotate the screw until it is both tight and parallel to the connecting 

bracket. 

11. Ensure all ESC cables, and power cables are correctly installed onto the center frame. 

'lf.-j'Wff-"!'f-+---- ESC cables 

11---'r----power cables 

© 2014 OJ I_ All Rights Reserved. 9 
Spreading Wings 8900 User Manual 

12. Replace the round cover of the center plate, and re-tighten the 4 screws (M3x8 self-tapping). Then 

replace the upper plate of the center frame, and re-tighten the 6 screws (M2.5x8 cheese). 

13. Double check ail frame arms. Arms M1 and M2 are the forward facing (nose), arms M4 and M5 are the 

tail. Seen from the top, motors on arms M1, M3 and M5 rotate counter clockwise while those on arms M2, 

M4 and M6 rotate clockwise. 

M3 

10 © 2014 DJI. All Rights Reserved 

r ,) 

M6 
Mounting Electronics and Wiring 

Eight positions are reseNed for mounting a flight control system, wireless video transmission module, 

receiver, and other accessories. The OJI A2 flight control system has been used here as an example. If using 

an A2, follow mounting and wiring instructions found in the A2 flight control system user manual. If using 

the DJI WI<-M flight control system, please refer to the WI<-M user manual for connections. Also be sure the 

firmware on your OJI flight controller has been updated to the latest version. 

Instructions 

1. Attach IMU module to the IMU area of the center frame. Ensure that it points toward the nose. 

2. Attach the PMU module to the center frame. 

& Only mount the IMU in the IMU position of the center frame. 

3. Mount the flight controller in the reserved position near the PMU module. 

Reserved Position 

:: 

A2 Fligllt Controller 

©2014DJI.AIIRightsReserved 11 
Spreading Wings S900 User Manual 

4. Attach the GPS collapsible mount to the center frame using M2.5x8 screws. 

5. Mount a GPS module to the GPS mount with a bracket. Ensure the arrow points toward the nose and avoid 

catching your fingers In the bracket when folding for transportation. 

-~· :~ 

¢ 

1i: 

-·-,0 

6. The other reserved positions are indicated in the diagram below and can be used for mounting a receiver, 

LED flight indicator, iOSD module and wireless video transmission module. 

12 ©2014 OJI. All Rights Reserved 
Spreading Wings S900 User Manual 

7. Check that every anti-drop screw has been firmly installed in the reseNed positions. Thread locker is 

recommended. 

(1) Remove the anti-drop screws to apply appropriate thread locker. 

(2) Replace and tighten. 

8. Note that the dampers are 30° silicon rubber. If you use other dampers or vibration absorbing balls, the 

quality of your aerial photography may be affected. 

Lt • Mount the GPS with a bracket to avoid interference from the center frame power board. 

• Use glue to install the GPS bracket. Ensure it is firm and stable before every flight. 

• Always test motors using the Assistant Software after installation. Refer to your flight control system 

user manual for details. 

© 2014 OJ I. All Rights Reserved. 13 
Spreading Wings 8900 User Manual 

Connecting the flight controller to the center frame 

1. Connect the flight control system according to your flight control system user manual. 

2. Connect the fligl1t controller to the center frame with the connection cables. 

There are two kinds of connection cables. Choose the corresponding connection mode according to the 

connection cable In the box. 

Using the connector set: £l~"P'®'L'l"-~-c'>O~"§ 

Plug in the connector set to the ESC signal outlet on the center frame. Then plug in the connector set to 

flight controller as shown below. 

(1) Yellow 4-pin cables are for M1- M4 connections. The yellow cable should be connected to M1. 

(2) Brown 4-pin cables are for M5- M6 connections. The brown cable should be connected to M5. 

(3) Black 4-pin cables are for four continuous ground pins connections. M 1-M4 are connected as the 

following diagram shows. 

M2 Ml·~-~00~@ 0 0 0 

M3 0 0 0 

M4 0 0 0 

M51!!1Dir~·f)_l 0 

M6 0 0 0 

0 0 0 

0 0 0 

Ml 

M2 

M3 

M4 

MS 

M6 

A2 Flight Controller the ESC Signal Outlet 

Using the 3-pin connection cable: CJ;o.._,,..._,....,.,.,..,,_,.,[jl!lj] 

M1 through M6 correspond to each motor number. 

0 

I~ .c.9'1S 

Ml 

o-Mr 

M2 [ll o-M2 

( . ~.(· ···.\"h,· .. ,···) .•..•..• ·•·•.···.·.·.·•• ··········. 

>-\ ' Jill! ~·iff 

~~ 

LV I~ h ~ 

:~ 0 0 

0 0 

M3 o-M, 

o-M4 M4 ~ 

~ o-Ms 

M5 o-M6 

M6 nr 

1H 

the ESC Signal Outlet 

14 © 2014 DJI. All Rights Reserved 

0 0 LINK LEO 

A2 

fliGHT CONTROllER 

f¢q:rroor I FQ I 1'.1! I 

• 

A2 Fligllt Controller 

~ F4 --i ,, ... ,, ... ,, ... x .... 

., ... X•.., 

~~ < S• 
Spreading Wings 8900 User Manual 

& If using a DJI WK-M flight controller, you must use the wires that came with the WK-M. M1 through 

M6 correspond to each motor number. 

WKM Flight Controller t11e ESC Signal Outlet 

Connecting the flight controller and landing gear 

1. Connect the left sewo (between M3 and M4) cable to the "L" port of the landing gear control board. 

2. Connect the right sewo (between M5 and M6) cable to the "R" port of the landing gear control board. 

3. For the A2 flight control system, connect the F1 port of the flight controller to the "IN" port of the landing 

gear control board. Other flight control systems connect a 2-position channel receiver to the "IN" port. 

& • If right and left sewo cables are reversed, the landing gear will not function properly. 

• Connect all wires carefully and neatly to avoid cable damage caused by frame edges. 

© 2014 DJI. All Rights Reserved 15 
Q 

:J 

:J 

g_ 

as 

§ 

~ 0 

:J 

5' 

co 

~ 

~ 

Connecting XT60 Ports on the Center Frame 

The bottom board is a power distribution board with three XT60 connectors for battery power. 

Instructions 

1. Connect the PMU power cable to the XT60 connector on top of the bottom board. 

2. Connect the landing gear control board cable to the XT60 connector on the bottom of the bottom board. 

3. Other connectors can supply power for other OJ! devices, as required. 

~ Installing Battery 

Soldering battery connectors 

AS150 spark-proof connectors are used. They must be soldered to your battery power cables. 

1. Remove the original battery connectors. Avoid cutting the power and ground cables at the same time, as 

this can cause a short circuit We recommend wrapping unsoldered cables with insulating tape to prevent 

accidental connections. 

2. Pass the black ground wire through the black housing. After passing the wire through, solder the female 

bullet connector to the ground wire. Wait for the soldered connection to cool, then pull the housing back 

over the bullet connector. 

3. Screw and pass the red power wire through the red housing. After passing the wire through, solder the 

male bullet connector to the power wire. Wait for the soldered connection to cool, and then screw and pull 

the housing back over the bullet connector. 

==ill!!! Ill 

16 ©2014 OJ I. All Rights Reserved 

MIWI =======n ..... l---... 

~lFL3 

====nrGI 

Connectors soldering diagram 
Spreading Wings S900 User Manual 

Connectors are soldered 

Installing and connecting battery 

1. Attach battery to battery tray. Do not use an oversized battery. Maximum installation dimension is 80mm X 

120mm X 200mm. 

2. Connect the black connector and then the red connector to power on. Disconnect the red connector then 

black connector to power off. 

© 2014 OJ I. All Rights Reserved 17 
Setting Up the Landing Gear 

Using a 2-position RC transmitter switch, landing gear retraction can be carried out remotely. 

Setting up the transmitter 

Select a 2-position switch (default setting is 01<) as the control input for the landing gear. Ensure the 

corresponding receiver port is connected to the "IN" port on control board. For the A2 flight control 

system, connect the flight controller's F1 port to "IN" port on control board. 

; -- -. .... 

{ @f') Upper: Toggle the switch to this position to raise the landing gear. 

' .... -" 

;'"-' 

( @,.,) Lower: Toggle the switch to this position to lower the landing gear. 

' / 

Lb, • If the transmitter switch has a FailSafe function, set the FailSafe value to the [Lower] position. This 

ensures that the landing gear will lower automatically when the receiver enters FailSafe mode. 

• To avoid accidental switch triggering, slide levers or other controls can be used for landing gear 

control. 

Usage procedures 

1. Ensure transmitter and receiver batteries are fully charged. 

2. Toggle the switch to the [Lower] position, and then turn on the transmitter. 

3. Ensure the "R", "L" and "IN" connections are correct. 

4. Ensure the landing gear is in the [Lower] position, then power on the system. If a solid green LED on the 

landing gear control board lights up, everything is normal. If it flashes green slowly, re-calibrate the system 

according to instructions in "Recalibrating Servo Travel". 

5. Toggle the switch to the [Upper] position ONLY AFTER takeoff. 

6. Toggle the switch to the [Lower] position for landing. 

18 © 2014 OJ I. All Rights ReseNed 
Spreading Wings S900 User Manual 

·>-'>· 

·V • Servo power will shut off 3 seconds after the landing gear has reached its target position. 

• When powering on the system, if t11e transmitter switch is in the [Upper] position, the LED will flash 

red quickly as a warning. Toggle the switch to the [Lower] position to continue. 

• If there Is an abnormal signal or no signal input Into the "IN" port, the LED will slowly flash red. 

Check receiver and connections for problems. 

• If servo power consumption is too high, the LED will light up red. If this lasts more than 4 seconds, 

the landing gear will lower and the LED will flash green slowly. Re-calibration is needed before 

flying. 

• A2 flight control system users can use the A2 Assistant to set Intelligent gear on the "Advanced" 

page. Refer to the "A2 user manual" for details. 

LED Control Board Indicator 

System normal 

Calibration required 

Recalibration required 

Calibration failed 

Enter calibration mode 

System calibrating 

Motor stalled 

Unsafe startup alert 

Input signal abnormal 

Landing Gear Specifications 

Parameter Range 

Working Voltage 3S-6S (UPo) 

Working Current Max1A@6S 

Working Temperature -20-70° c 

Total Weight 875g 

:f/f{•·- Solid green. 

:f/j): ...... Blinks rapid green. 

oifJ;: ······Blinks slow green. 

:('{): - Solid yellow. 

f/f ...... Blinks rapid yellow. 

o&.J.· · .. ··.Blinks slow yellow. 

f/J!:- Solid red. 

·f/J!: ...... Blinks rapid red. 

oiffi.: ······Blinks slow green. 

Parameter Range 

Input Signal PWM (High-Pulse Width 800us-2200us) 

Output Signal PWM (Mid Position is 1520us) in 90Hz 

Output Voltage 6V 

Servo Travel 150° (Minimum 120°) 

©2014 DJI. All Rights neserved 19 
Mounting the Gimbal 

Before assembling the gimbal, Install the GCU as shown below. Be sure to install on the side as shown below. 

A DJI Z15-GH4 (HD) gimbal has been used as an example In the following diagrams. 

The connectors on gimbal should be removed for better performance, then the gimbal can be mounted to 

the lower connection points. Users of DJI Z15-5N I 7N gimbal, refer to the DJI Z15-5N /7N Gimbal Mounting 

Notes (Page 21) for details. 

20 © 2014 OJ I. All Rights Reserved 
Spreading Wings S900 User Manual 

Check that the system's center of gravity is on the line as shown in the diagram below. 

DJI Z15-5N /7N Gimbal Mounting Notes 

& • Due to the size restriclion of the Z15-5N I 7N gimbal, users should purchase extended landing gear 

legs (used with Z15-5N I 7N gimbal) to avoid damage and/or failure during the self-test. Refer to the 

Part List Package No.34 (Page 31) for details. 

• Follow the Mounting the Landing Gear (Page 6) instructions to mount extended landing gear legs. 

Then the gimbal can be mounted as shown below. 

:\j: Package No.34 is for users whose landing gear legs are 300mm. Users whose landing gear legs are 

350mm have no need to purchase this part. 

© 2014 DJJ. All Rights Reserved 21 
Appendix 

ESC State 

Ready 

Throttle stick is not at bottom 

Input signal abnormal 

Input voltage abnormal 

ESC State 

Standby 

Motor rotating 

Motor rotating at full throttle position 

Sound 

.1'1234567 --B--B 

BBBBBB .. . 

B ...... ·· B ........ B ... 

BB ... BB .. ·BB .. ·BB ... 

LED 

Off 

Solid Red or Green On 

Solid Yellow On 

Lt, DJI ESCs are specifically designed for multi-rotors. When used with DJI autopilot systems 

fl parameters and travel ranges do not have to be calibrated. 

"0 

(I) 

:J 

0. 

x· 

Diagonal Wheelbase 

Frame Arm Length 

Frame Arm Weight 

(with Motor, ESC, Propeller ) 

Center Frame Diameter 

900mm 

358mm 

316g 

272mm 

Center Frame Weight (with Landing Gear 1185g 

Mounting Base, Servos) 

Landing Gear Size 

[Motor 

l 

Stator Size 

I<V 

Max Power 

22 © 2014 OJ I. All Rights Reserved 

460mm(Length)x450mm(Width)x360mm(Height) 

41x14mm 

400rpmN 

500W 
Weight (with Cooling Fan) 

Working Current 

Working Voltage 

Signal Frequency 

Drive PWM Frequency 

Weight (with Radiators) 

I ,,;c <,<' , > '. , <>, < ,,,,,,.,', ., 

1 F'()Wgi:Jie I?r()PE!)I~r(15o2f1 ~52f'l}, 

Material 

Size 

Weight 

! F'h~nt Pgrahl~te!rs ••• 

Takeoff Weight 

Total Weight 

Power Battery 

Max Power Consumption 

Hovering Power Consumption 

Hovering Time 

Working Environment Temperature 

Flight Control 

Pitch 

A2 110% 

WooKong-M 160% 

Basic 

Roll 

110% 

160% 

Spreading Wings 8900 User Manual 

158g 

40A 

6S LiPo 

30Hz~ 450Hz 

8KHz 

35g 

High strength performance engineered plastics 

15x5.2 inch 

13g 

4.7Kg ~ 8.2Kg 

3.3Kg 

LiPo (6S, 10000mAh~15000mAh, 15C(Min)) 

3000W 

1000W (@6.8Kg Takeoff Weight) 

18min (@12000mAh & 6.8Kg Takeoff Weight) 

-10'C ~ 40" C 

Attitude 

Yaw Pitch Roll 

120% 220% 220% 

160% 190% 190% 

Vertical 

120% 

100% 

© 2014 DJI. All Rights Reserved 23 
FAQ 

Be sure to solder the thick wires and fine wires correctly when soldering an ESC to the frame arm. 

Clockwise (CW) and counter clockwise (CCW) motors have a different arrangement of the colored wires. 

II@ 

CCWarms CWarms 

Instructions 

1. Use two M3x12.3 screws and four washers to remount propellers. 

2. Apply thread locker to the thread of the propellers mount first. 

3. Affix screws with 4Kg · em (0.4N · m) torque. 

;\): Refer to original screw tensions if you are unfamiliar with torque measurements. Applying thread 

locker to the propeller mount first avoids getting thread locker into the holes of the plastic propeller. 

& Loose screws cannot be securely locked with thread locker. 

Torque markers on the screws and propeller covers will give you a visual cue to check whether the propellers 

are loose. Check the torque markers before every flight. 

24 © 2014 DJI. All Rigl1ts Reserved 
Spreading Wings S900 User Manual 

~X 

Instructions 

1. Insert the propeller blades into the propeller holder. 2. Attach the propeller holder to the frame arm. 

A soft damper is part of the vibration absorber. Assemble soft dampers as shown below. Assembly is the 

same for CCW and CW propellers. 

Lt, • Ensure all soft dampers and vibration absorbers are in good condition before every flight. If not, 

replace immediately. Otherwise, the flight performance of your aircraft will be adversely affected. 

• Before installing the soft dampers, put the copper gaskets onto the four mounting holes on the 

carbon plate. Then put the soft dampers into the mounting holes. 

• After tightening the screws, the vibration absorbers may be twisted. If this is the case, hold the 

motor with your thumbs under the base plate and fingers on the top carbon plate, and squeeze the 

plates together to make the vibration absorbers flat and parallel with the plates. 

© 2014 OJ I. All Rights Reser .'ed 25 
Spreading Wings S900 User Manual 

Remounting servos is not recommended as they are pre-installed. 

Instructions 

1. Connect the left servo cable to the "L" port of the landing gear control board. 

2. Connect the right servo cable to the "R" port of the landing gear control board. 

3. Press and hold the SET button using a pin then power on. You will see a yellow LED beside the SET button 

flashing quickly. Wait as servos complete position initialization. 

4. Make sure the arm connecting to the servo is parallel to the link as shown in the following diagram. 

5. Assemble the left and right servos to the left (between M3, M4) and the right (between M5, M6) parts of the 

landing gear. Power off. 

== L IN 

To left servo 

To receiver channel 

(To Fl port if use A2) 

SET Button 

Instructions 

LED 

1. Keep your hands away from all moving parts. 

2. Ensure the "R", "L" and "IN" connections are correct. 

Servo --l--10 

Connecting arm ---1--~~~""''/Jj 

Link -----11---+.~'( 

After Installation 

3. Keep the whole aircraft off of the ground during calibration, as landing gear will move. 

4. Press and hold the SET button using a pin while powering on, then release. An LED will flash yellow 

quickly. Press the SET button again. Auto calibration will begin and the LED will flash yellow slowly. DO 

NOT obstruct any moving parts during auto calibration. 

5. During calibration, the left landing gear will raise and lower, followed by the right landing gear. 

6. After calibration, both the left and right landing gears will be lowered and the LED will display a solid green 

light. This indicates that the landing gear is working properly. 

Lh • If the LED is solid yellow after calibration, a problem has occurred. Carry out the instructions in 

"Remounting the Landing Gear Servo" then try again. 

• Avoid obstructions during calibration. If the landing gear was obstructed, recalibration will be 

required, per the above steps. 

• If t11e "R" and "L" servo cables are reversed, travel will not be measured correctly. Fix the 

connections and recalibrate the landing gear using the above steps. 

• Landing gear travel has been pre-calibrated. Mechanical adjustment of the gear travel is not 

recommended. 

26 © 2014 OJ I. All Rights Reserved 
Part list 

If you require a replacement part, locate the part that you wish to replace in the following tables. Then order 

the package that comes with the specified part. The numbering of the part is defined as follow: 

~020101~ cw,dock"''e' ccwa,oouotecdock 

S900 __::r T T T --c wise; Bas Balck: R as Red: Gas Green 

Ol-Frame Arm: 02-Center Frame; _) L_Package Part No. 

03-Landing Gear Package No. 

Frame Arm 

M3x12.3 (hexagan) 

890121028/ 

~ 

89012202RI 

89013701RI """"5!"'"" 890138018 

c 

89012501CCW/ _':::::::::-:::::::=::::::--:::~- ~--- 89012503 

-----------~---l!'!r~ 89012502CW 

890121018/ 

89012201R 

'!)' '!)' '!)' '!)'--- M3x10.3 

89010801/ ------------;~ 89012903/ 

89013501 c; ;I c::l 89013003/ 

8"----- 89013103/ 

89010802 -----------~ 89013203 

89011001 ------------.~-=':F> - - S9010401CCW8/ 89010402/ 

S9010501CCWRI 89010502/ 

------------~ o.- S9010601CW8/ 89010602/ S9010503/ 

89010403/ 

M3x4.5 

89012902/ 

89013002/ 

89013102/ 

89013202 

89012901/ 

89013001/ 

890131011 

89013201 

89012301RI 

890124018 

4 

5 

6 

7 

8 

10 

0 S9010701CWR 89010702 89010603/ 

~~~:r----...::-o" ____ ~~~ . 890110703 

@~ [ """ ~:-.- . -----------~~ ~ 

~ S9012302/ ,.,.__89010404/ 

--------~/ 6 ~ S9012402 89010504/ 

~ 

.Fl.oFl. 89010604/ 

89010704 

/aaft [L___ M3x12.3 (cheese) 

-------~ 

8900 Frame Arm CCW- Black 

8900 Frame Arm CCW- Red 

8900 Frame Arm CW - Black 

8900 Frame Arm CW- Red 

8900 Motor Damping Unit 

8900 Motor Mount Carbon Board 

Part No.·· 

89010401CCWB, 89010402,89010403, 

89010404, M3x12.3 (cheese) 

89010501CCWR, 89010502,89010503, 

89010504, M3x12.3 (cheese) 

89010601CWB,89010602,89010603, 

89010604, M3x12.3 (cheese) 

89010701CWR,89010702,89010703, 

89010704, M3x12.3 (cheese) 

89010801, 89010802, M3x10.3 

89011001, M3x4.5 

©2014 DJ!. All Rights Reserved 27 
;,? 

:4 

c 

~ 

Spreading Wings 8900 User Manual 

21 S900 4114 Motor with black Prop cover S9012101B, S9012102B, M3x4.5 

22 S900 4114 Motor with red Prop cover S9012201R, S9012202R, M3x4.5 

23 S900 ESC with Red LED S9012301R, S9012302, M3x12.3 

(cheese) 

24 S900 ESC with Green LED S9012401G, S9012402, M3x12.3 

(cheese) 

25 S900 Propeller Pack S9012501CCW, S9012502CW, 

S9012503, M3x12.3 (hexagan) 

Center Frame 

89020301 

if 

M2.5x8 (cheese) ---------1! 

if if 

if if 

89021502 -------==~~~~ -:z:=~~ ~ 

M3x6.5 

89021501 

- 89020901 

ll 

89021201L-------I 

89021203/ _______ __/ 

89021101 

89021401 

28 © 2014 DJI All Rights Reserved 

1'! 1'! 

@----------- 89021503/ 

1'! 1'! 

89032703 

~---- 89020302 

Jl-- M3x8 (self-tapping) 
[·.: ;>.·;_·--·:.··>_('>·::.---> 

!.Package 

~-;_;_·_- ____ ·::.-. \\•_-" -.-.> No. .. <. -- .Nar\l~ 

3 S900 Lock Knob 

9 S900 Center Frame Support Pillar 

1 2 S900 Arm Mounting Bracket 

14 S900 Center Frame Bottom Board 

15 S900 Center Frame Top Board 

Spreading Wings S900 User Manual 

S9020301, S9020302, M3x8 (self-tapping) 

S9020901, M2.5x8 (cheese) 

S9021201L,S9021202R,S9021203, 

M3x6.5 

S9021401, M3x4.5 (cheese), M3x8 (selftapping), M3x6.5, M3x5.5 

S9021501, S9021502, S9021503, M3x6.5, 

M2.5x8 (cheese) 

jj S900 Frame Arm Mounting Steel Shaft S9021 101 

Landing Gear 

M3x4.5------------, 

89031902---------------

S9031814---------------

S9031815---------------

M3x6.5~ $9031901 

M2.5x13B 

$9031604{ 

$9033306 ~" 

S90316021-------------.. t• 

89033303 ~ 

89033301 

$9033302 ~ 

890316031 c 01 

89033305 

$903160~1/_________/ J 1 89033304 ____/ 

$9031605/ 

$9033307 

M2.5x5 

M2.5x8 (cheese) 

89033308 __ _/ 

89033309 __ _/ 

89033310---/ 

89033311 __ _/ 

$9033312 __ __/ 

S9031713f--_/ 

89031813 

M2.5x8 (socket cap) 

$9032601 ___ / 

89032602 --~ 

89032603 ___ / 

89032608 _____ / 

M3x22 (socket cap) ____ J 

89032604 ______ _/ 

_,--------------S9031812 

~----------89031712 

-~----------89031903 

~-----------iM3x6.5 

-----------S9031904 

-----------89031905 

89030201 

89033313 

'------------89033314 

'------------89031801 

............. _ .. _ .. _"!-' --- 1 ' •- I M3x8 

seoa2sos seoatsoa=t:sl -1---s9031S02 

1 l> • • ?1-----89031803 

$9031809 ~ ru:l-1---89031804 

M1.6x5 ~ ~· I S9031805 89031810~/ ~ ~j-M2 5x8(cheese) 89031811~ . 1 - 89031806 

.--..c--- M2.5x8 (socket cap) (

1

) 1 "\_ 1 89031807 c:===========l.= ..=~-~~"":"::i'o·ot--89~:;:;~ ~---89032002 

CautionZ(1) Parts wilhin the dotted box are mirrored against each other. 

Except for S9031814 and S9031815. 

© 2014 OJ I. All Rights Reserved 29 
Spreading Wings 8900 User Manual 

16 S900Gimbal S9031601,S9031602,S9031603,S9031604,S9031605, 

Damping Bracket M2.5x5, M2.5x13 

17 8900 Retractable S9031701,S9031702,S9031703,S9031704,S9031705, 

Module (Right) S9031706,S9031707,S9031708,S9031709,S9031710, 

89031711, 89031712, 80031713, M1.6x5, M2.5x10 (socket 

cap), M2.5x8 (cheese), M2.5x5, M3x8, M3x4.5, M3x6.8 

18 8900 Retractable S9031801,S9031802,S9031803,S9031804,S9031805, 

Module (Left) S9031806,S9031807,S9031808,S9031809,S9031810, 

S9031811,S9031812,S9031813,S9031814,S9031815, 

M1.6x5, M2.5x10 (socket cap), M2.5x8 (cheese), M2.5x5, 

M3x8, M3x4.5, M3x6.8 

19 S900Gimbal S9031901,S9031902,S9031903,S9031904,S9031905, 

Damping M2.5x5, M3x6.5 

Connecting 

Brackets 

20 8900 Landing Skid 89032001,89032002 

26 8900 Landing Gear S9032601,S9032602,S9032603,S9032604,S9032605, 

Leg 89032606, M2.5x8 (socket cap), M3x22 (socket cap) 

2 8900 Battery Tray 89030201 

'1J 33 S900Gimbal S9033301,S9033302,S9033303,S9033304,S9033305, "' ;:+ 

r Mounting S9033306,S9033307,S9033308,S9033309,S9033310, 

?a." 

Accessories S9033311, 89033312, 89033313, 89033314, M2.5x5, 

M2.5x13, M2.5x8 (cheese) 

Miscellaneous 

Y-89032701 

89013601 

89020103 89020104 

/S9033401 

Caution: This part is used with Z15-5N /7N gimbal. 

30 © 2014 DJI. All Rights ReseNed 
13 8900 Center Frame 

29 8900 Complete Arm [CW-RED] 

30 8900 Complete Arm [CW-Green] 

31 8900 Complete Arm [CCW-RED] 

32 8900 Complete Arm [CCW-Green] 

27 8900 GPS Holder 

28 8900 Screw Pack 

1 8900 Power Cord Plug 

34 S900 Extended Landing Gear Leg 

35 S900 Rubber Damper for 4114 Motor 

36 8900 Propeller Holder 

37 S900 4114 Motor-Red Prop Cover 

38 S900 4114 Motor-Black Prop Cover 

FCC Statements 

Spreading Wings 5900 User Manual 

Package 3, 9, 12, 14, 15 

Package 7, 8, 10, 11, 22, 23, 25,89012901, 

89012902,89012903 

Package 6, 8, 10, 11, 21, 24, 25,89013001, 

89013002,89013003 

PackageS, 8, 10, 11, 22, 23, 25,89013101, 

89013102,89013103 

Package 4, 8, 10, 11, 21, 24, 25,89013201, 

89013202,89013203 

89032701,89032702,89032703, M2.5x8(cheese) 

Assorted screws 

S9020101,89020102,89020103,89020104 

89033401 

89013501, M3x10.3 

89013601 

S9013701R, M3x12.3 (hexagan) 

890138018, M3x12.3 (hexagan) 

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant 

to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful 

interference when the equipment is operated in a commercial environment. This equipment generates, uses, 

and can radiate radio frequency energy and, if not installed and used in accordance with the instruction 

manual, may cause harmful interference to radio communications. Operation of this equipment in a residential 

area is likely to cause harmful interference in which case the user will be required to correct the interference 

at his own expense. 

© 2014 DJI. All Rights Reserved 31 
User manual is subject to change without prior notice. 

You may visit OJ! offical website to obtain the latest version of user manual. 

http://www.dji.com/product/spreading-wings-s900 

© 2014 DJI. All Rights Resewed.