UDI R/C VOYAGER U845Wifi User manual

Operations Guide
U31W
NAVIGATOR
Equipped with 120°wide-angle 720P HD WIFI Camera

2
Catalog
Important Statement 3
Safety Precautions 3
Safe Notice for Drone Battery 4
Charging Instruction for Drone Battery 5
Check List Before Flight 5
Instruction for Drone and Transmitter 6
Pre-flight Operation Instruction 10
Functions Introduction 13
Spare Parts Installation Instruction 22
To know your APP 16
Spare Parts 24
Troubleshooting Guide 26

3
Important Statement
Thank you for buying UDIRC's product. Children under the age of 14 years old must
not use this product. Please read this brochure carefully before using the product.The
contents of the manual is deemed to be accepted once the user has flown the drone.
This product is not an ordinary toy but a piece of complicated equipment which is
integrated with professional knowledge of mechanic, electronic, air mechanics,
high-frequency emission etc. The user must behave responsibly when using this
product and relevant APP. The drone and relevant APP must only be used for legal
purposes. With the purchase of this drone, the user has agreed to obey the above rules
and act within the constraints of local laws and regulations.
We do not undertake any liability for the accidents caused by environment, illegal
behavior, improper operation or refitting of the drone after product sale.
We have entrusted the distributor to provide technology support and after-sale
service. If you have any questions about use, operation, repair etc., please
contact the local distributor.
This drone is only suitable for experienced RC drone users aged 14 years and above.
This product contains small parts, therefore, please keep out of children’s reach.
The flying field must be legally approved by your local government. Do not fly the
drone in the vicinity of the airport. Keep far away from the airport of distance more than
5km when flying a RC drone. Flying fields must be spacious and it is recommended for
them to be at least 8M (length)*8M (width)*5M (height).
(1) Flying Area
* Please only use the provided spare parts or purchase original UDIRC accessories for
replacement. If users have done otherwise, we, UDIRC do not assume any responsibility.
* Keep the packing and user manual for future reference.
Safety Precautions
(3) Keep away from obstacles and crowds
The speed and status of a flying RC drone at times can be unpredictable and may pose
a potential danger. Therefore, the user must keep away from crowds, tall buildings, power
lines etc. when operating a flying RC drone. Do not fly the RC drone in rainy, storm,
thunder and lighting weather conditions for the safety of user, people and their properties.
(2) Use correctly
Improper assembly, broken main frame, defective electronic equipment or unskilled
operations may all cause unpredictable accidents such as drone damageor human injury.
Please pay special attention to safety operations and be knowledgeable of user
responsibilities so as to prevent accidents.

4
(4) Keep away from humid environment
The drone consists of precise electronic components. Humidity or
water vapor may damage the electronic components and cause accident.
(5) Safe operation
Please operate the RC drone in accordance with your physical status and flying
skills. Fatigue, listlessness and improper operation may increase the rate of accident.
(6) Keep away from rotating parts
Rotating parts like propellers or motors may cause serious injury and damage.
Keep the face and body away from rotating parts.
(7) Keep away from heat
(8) The drone should be controlled within max control distance. Do not fly the drone
near tall buildings, high voltage cables or other places with signal interference. These
places may cause signal interruption causing the drone to get out of control, which may
result into accidents.
(9) Do not touch the hot motor with your bare hands in order to avoid being burnt.
(10) Please use the recommended charger only. Power off the drone before cleaning
the RC drone. Check the USB cable, charging plug etc. regularly to ensure they are
working properly. If there is any damage, stop using immediately until repair or replacement
has taken place.
The RC drone is made of metal, fiber, plastic, electronic components etc.
Keep away from heat and sunshine to avoid distortion and damage.
Safe Notice for Drone Battery
* Do not expose the battery to high temperatures, such as fire or heating device
so as to avoid damage or explosion.
* Do not use the battery to hit hard surface.
* Do not put the battery in water and keep it in dry place.
* Do not open the battery.
* Do not leave the battery without supervision when charging.
* Make sure that there is no short circuit of the power wire.
* Please use the recommended charger only.
* Check the surfaces of the charger wire and plug regularly. Do not use any broken charger.
* If the drone will be flown for more than a week, maintain the drone battery with
about 50% power to keep its performance and working life.

5
Checklist Before Flight
1. Make sure the drone battery and transmitter battery are fully charged.
2. Make sure the left stick of the transmitter is in the middle position.
3. Please strictly obey the order of turning on and off before operation. Firstly,
turn on the transmitter and then the drone before flying. When switching off,
power off the drone at first and then the transmitter. Improper power on or off operation
may cause the drone to get out of control and threaten people’s safety. Please
cultivate the correct habit.
4. Make sure the connection is secure between battery and motor etc. Persistent
vibration may cause bad connection between the power terminals and make the
drone control be erratic.
5. Improper operation may cause frequent drone crashes, which may arouse motor
defects and noises, affect the drone flying capabilites or even cause the drone to
stop flying. Please go to the local distributor to buy new parts for replacement so
that the drone will return to its optimum working condition.
Charging Instruction for Drone Battery
* For faster charging, it is recommended to use an adapter with 5V 2A output current
(not included) to charge the battery.
Drone Battery
1. Connect the drone battery with USB cable firstly and then choose one of the
methods as shown in the pictures below to connect with USB plug.
2. The red USB indicator light keeps bright when charging and the light becomes
green when fully charged.
Power BankPhone Charger
Computer Charging Car Charger
Li-Po Battery Disposal & Recycling
Wasted Lithium-Polymer batteries must not be placed with household trash.
Please contact local environmental or waste agency or the supplier of your
model or your nearest Li-Po battery recycling center.

6
Instruction for Drone and Transmitter
Drone
Propeller A
Left Right
Front
Rear
Power Switch
Propeller B
Left guard
Propeller B
Propeller A
Right guard
Camera
Battery holder
LED strip
（Green）
Cushion
LED strip
（Green）
LED strip
（Red）
LED strip
（Red）
Cushion
Drone cover
housing
Specification
Drone size
Fly Weight
Propeller Diameter
Flying Time
198.5x183.2x42.8mm
85g
66mm
5.5~6.5mins
Max Flying Distance/Radius 80m
60mins
3.7x2 350mAh
Streaming video Range 30m
Frequency 2.4Ghz Camera Resolution
Main Motor 8520x4
1280x720P
Drone Battery
Charging Time for Drone Battery

7
Expanded View
11 Right front LED hood
No. Name No. Name
Cushion
1Drone cover housing
122Propeller A (Clockwise)
13 Receiver board 3Right guard
14 Battery upper holder 4. Clockwise Motor (Red connector)
15 Drone battery 5Propeller B(Counterclockwise)
16 Battery lower holder
6Counterclockwise Motor
( White connector) 17
7Drone bottom housing 18
Camera board
8Camera head cover 19
Left guard
9Lens 20
Left rear LED hood
10 Right Rear LED hood
Left front LED hood
1
2
3
4
5
6
8
9
10
11
4
7
12
12
1212
20
19
18
6
2
17
16
5
15
14
13

8
Brief Introduction to Button Functions
Left Stick
Right Stick
Power Switch
Headless Mode
High / Medium/Low
Speed button
Move the stick forward / backward / left / right to fly the drone
up / down / turn left / turn right, respectively.
Move the stick to forward / backward / left / right to fly the drone
forward / backward / left / right, respectively.
Push up the power switch to turn on the transmitter, and pull down to turn off.
Press the button to enter heading hold mode, and press again to exit
from headless mode.
Press down this button to switch to High /Medium/ Low Speed.
Take Off / Landing /
Emergency
Stop Button
Press the button and the drone will fly up automatically. Press the button
again and the drone will land on the ground automatically. Press and hold the
button more than 1s, the propellers will stop and the drone fall immediately.
Trimmer
mode Button
Press down this button and move the right stick to the required trimmer
direction, then it will adjust the direction accordingly, when loose the stick,
then ESC from the trimmer mode.
Transmitter
Phone holder
Power Switch
Left Stick
(Throttle / Rudder)
One button Take Off /
Landing / Emergency Stop
Button
Headless Mode
Right Stick
(Forward / Backward )
Trimmer mode button
Battery cover
High / Medium/Low
Speed button

9
Battery installation
Open the battery cover on the back side of the transmitter and put 4 alkaline
batteries (AA, not included) into the cavity in accordance with the electrode instructions
as shown in pictures 1 and 2
Picture 2Picture 1
1. Make sure the electrodes are correct.
2. Do not mix new with old batteries.
3. Do not mix different kinds of batteries.
4. Do not charge the non-rechargeable battery.
Notice:
Battery Cover
4*1.5V
Alkaline Batteries
Phone Installation Instruction:
1. Pull up the phone holder( Picture 3), open the lower clamp, then pull the
upper holder until the phone can be held firmly in place(Picture 4).
2. Put the phone into the holder, then release the clamp where the phone
be held tightly( Picture 5/6).
Picture 3 Picture 4 Picture 5 Picture 6

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Picture 7 Picture 8 Picture 9
1. Turn on the transmitter switch (Picture 7) and the power indicator light will start
to flash rapidly. Pull the left stick all the way down to its lowest position and then
release. The left stick will return to the middle position automatically.
(Picture 8 / 9) The power indicator light will start to flash slowly, indicating that the
transmitter is ready for frequency pairing.
2. Install the Lipo battery into the drone(Picture 10), power on the drone
(Picture 11). ( Press for about 2 seconds)
3. Put the drone on a flat surface, the drone body lights will stop flashing and become
solid bright, indicating that the frequency pairing was successful.
Important Notice: Please make sure the drone is placed in the horizontal position after
powering on the drone, so that the drone can work well.
Pre-flight Operation Instruction
Frequency Pairing
3. Activate(unlock) motors: Move the left and right sticks at the same time as Picture
16 demonstrates(45 degree inward) to start the motors and repeat the process
to lock the motors.
Checklist before Flight
1. The camera is at the front. Keep the front of the drone pointing away from you.
2. Power on the drone and check the direction of the rotating propellers. The left
front and right rear propellers A rotate clockwise while the right front and left
rear propellers B rotate counterclockwise.
Picture 11
Battery Sticker
in the upper side
Picture 10
Drone power switch

11
Calibration Instruction
Please follow the below steps to calibrate the drone if its flight becomes unstable
after a crash and it cannot be adjusted by using the trimmer button.
1. Power off the drone, then turn off the transmitter switch.
2. Turn on the transmitter switch, push the left stick all the way down to the
lowest position (Picture 13) and then release it. The left stick will return to the
middle position automatically (Picture 14). At that time, the transmitter will be
ready for frequency pairing mode.
3. Power on the drone and put it on a flat surface in a horizontal position. The
drone bodylights will change from flashing to solid bright, indicating a successful
frequency pairing.
4. Do not move the left stick before successful calibration. Push the right stick
as picture 15 below shows and then release it. The drone bodylights will start
flashing, indicating that the drone is calibrating. When the drone bodylights become
solid, it means that calibration has been successful.
Notice: When the drone has experienced a severe crash, and the gyro recovery is impossible
causing control difficulties; the drone should be switched off and the calibration
process repeated
4. After activating the motors, push up the left stick slowly to fly the drone, and
pull down the left stick slowly to its lowest position to land the drone smoothly.
5. It is recommended to repeat Step 4 for practice.
6. Adjust relative transmitter trimmer button to adjust the rudder if the drone tilts
to one side when flying.
Picture 12
Picture 13 Picture 14
Picture 15

12
Flying Control
Notice: Every time before the drone is flown, move the left and right stick at the same
time as Picture 16 shows below(45 degree inward) to start the motors. Push up the Left
stick slowly to fly the drone or press down the one button take off .
Left Stick
Move the stick to the left,
then the drone turns to the left.
Move the stick to the right,
then the drone turns to the right.
Push up the stick,
then the drone flies up.
Pull down the stick, then
the drone goes down.
Right Stick
Push up the stick, then
the drone flies forward.
Pull down the stick,
then the drone
goes backward.
Move the stick to the left,
then the drone turns to left.
Move the stick to the right,
then the drone turns to right.
Left and right turning trimmer
When flying, if the drone head rotates to left, press down the
trimmer button and push the left stick to right. If otherwise, push to the left.
Forward and backward trimmer
When flying, if the drone tilts forward, press down the trimmer button,
and push the right stick backwards. If otherwise, push forward.
Left and right side flying trimmer
When flying, if the drone tilts to left, press down the trimmer button and
push the right stick backwards to the right. If otherwise, push it to the left.
Trimmer mode

13
2. Method 2 (One Button Landing): When flying, press the Take Off / Landing /
Emergency Stop Button once (picture 16), and the drone will land on
the ground automatically. (When using this function, the left stick SHOULD
not be used or the function will fail).
Take off/ One button take off/Landing modes
Functions Introduction
2. Method 2 (One Button Take Off): After frequency
pairing is successful or the motors activated, press the
Take Off / Landing / Emergency Stop Button
(Picture 16) , the drone will fly up automatically and
keep flying at an altitude of approximately1.2 meters .
1. Method 1 (Take off): After frequency pairing is successful,
push down the left and right sticks as picture 12 illustrates
to start the motor and then release them. To fly the drone to
a certain altitude, push up the left stick and then release it.
▲Emergency Stop: In an emergency situation, such as the drone being in
danger of colliding with a person or obstacle etc., press the Take Off / Landing /
Emergency Stop button immediately and hold it for more than 1s( picture 16) and
the propellers will stop immediately.
Tip: Do not use the emergency stop function unless an emergency situation arises. The drone will
fall down suddenly after all propellers are stopped.
Landing Methods
1. Method 1 (Landing): When flying, push the left stick all the way down to the
lowest position(Picture 13) and hold it until the motors have stopped and the
drone landed slowly to the ground.
Altitude Hold Mode
Push the left stick up (down) to fly the drone up (down)
at a certain altitude and then release the stick. The stick
will return to the center position (Altitude Hold Center) as
shown in picture 17. The drone will continue to fly at
the specified altitude until the above steps are repeated, so
as to change to another altitude( Default mode).
Altitude hold mode allows the drone to maintain a consistent altitude while
the roll, pitch, and yaw can be controlled normally. It makes drone control
much easier for beginners and stabler for aerial
photography.
Altitude Hold Center
Picture 17
Take Off / Landing /
Emergency Stop Button
Picture 16

14
High / Medium/
Low Speed
Mode Switch
(Press Down)
Press down the button indicated below, and a “ di” tone will be sounded signifying that the
low speed mode is activated. In the event that a “ di.di” or a “di.di.di” tone is sounded,
this means that the medium or high speed mode has been activated, respectively.
High / Medium/Low Speed Mode Switch
Low Speed Mode(Mode 1)
1. Low Speed Mode is suitable for beginner.
Medium speed Mode(Mode 2)
2. Medium Speed Mode is suitable for skillful
pilots to play in gentle breeze.
High Speed Mode(Mode 3)
3. High Speed Mode is suitable for experts to
perform aerial stunts outdoor.
The front and rear positions of a drone are generally indicated by LED lights or colored
propellers. By default, the users are readily able to identify the front and the rear of the
drone when flying. However,under headless mode, the users can operate the drone
without worrying about the orientation (left is left and right is right at all times,
regardless of the direction to which the drone head is pointing ). This mode is designed
for beginners and also the users, who fly the drone in daylight or at a far distance when it
is difficult to identify the drone orientation.
The default setting is NOT Headless Mode.
Headless Mode
You are allowed to activate the headless mode function before taking off or in
flight. To fly under headless mode, you are required to ensure that the drone front
direction is aligned to your front direction, DO NOT change the orientation of your
transmitter and keep it in front of you at all times.(See below picture)
WARNING: DO NOT USE HEADLESS MODE BEFORE YOU ARE SURE THAT THE DRONE'S
FRONT IS YOUR FRONT. OTHERWISE, CONTROL MAY BE LOST AND THE DRONE FLIES AWAY.
Front
Rear
Left Right
Front
Rear
Left Right

15
Low Battery Alarm
When the drone is in low battery mode, the transmitter will send out a constant beeping
sound to remind the user to land the drone as soon as possible.
When the transmitter goes into low battery mode, the transmitter will continuously beep
to remind the user to land the drone and replace the batteries as soon as possible or the
drone may go out of control.
Motors Stuck Protection
1. When the propellers is jammed/stuck, then the drone LED will flash quickly and
the stuck protection function activated where the motors will stop running.
2. To deactivate the stuck protection, pull down the left stick to the lowest position, the
drone LED will become solid and the drone can be flown again.
Out of Range Alarm
When the drone is going to surpass the max remote control distance, the transmitter
will beep “didi...didi...didi...” continuously so as to alarm the user to return the drone
within the control range immediately or the user stands the risk of the drone being flown
away
* Press down the headless mode button, the drone’s left and right LED will start
flashing alternately, signifying that the drone has entered headless mode, press the
button again, then the LED will become solid as the drone exits headless mode.
Headless Mode

16
Frequency Pairing between Mobile Phone and Drone WiFi:
2. Enter the settings of the mobile phone, turn on WiFi (WLAN) and choose udirc-***,
return to desktop after successful connection.
1. Install the Lipo battery into the drone and power on the drone. Put the drone on
a flat surface in a horizontal position.
3. Click on the icon Flyingsee and click on to enter remote control interface
to experience the real time transmission.
100%
EMERGENCY
Click on the icon Home Page Real time Transmission Interface
Flyingsee
Learn the operation
of drone
Remote control interface
Media
Help
Explore UDIRC Drone
HOME
4. Click on to enter the Virtual Control interface. At this moment, the drone
LED lights will stop flashing and become solid bright, indicating successful
frequency pairing, where the drone will be ready to be controlled via APP.
Download and Install the APP: Flyingsee
The APP is suitable for mobile phone with iOS and Android systems, please
download from the mobile phone software stores:
1. For mobile phone with iOS system, please search Flyingsee in APP Store.
2. For mobile phone with Android system, please search Flyingsee in Google Play.
3. Scan the below QR code to download Flyingsee App.
To know your APP

17
Remote Control Interface
Important Tip: Ensure that the drone is put on a flat surface in a horizontal position so that the
drone can work properly or the user may experience difficulty in drone control.
Virtual Control Interface
H:100m 100%00:00
EMERGENCY
Introduction for APP Icons
Home Page Icons
Home Page Icon
Click on the icon and return to the home page.
L R
Click on the icon to enter the virtual reality mode to experience first person view
(only available when using with a VR headset). Click on the icon again to exit
the virtual reality mode.
Virtual Reality Mode
Click on this icon and it will become red. Draw a flight route in the right area. The drone
will fly according to the flight route drawn. Click on the icon again to exit the Flight
Route Setting Mode. The icon turns white.
Flight Route Setting Mode
Explore UDIRC Drone
Learn the operation of Drone
Remote control interface
Help
Media

18
EMERGENCY
The icon is red by default. Click this icon and the propellers will stop immediately.
The drone will fall instantaneously to the ground .
Tip: Do not use the emergency stop function unless it is an emergency situation.
Emergency Stop
TF Card
When the TF card has not been inserted into the drone camera, then this icon will will
be on display. When the TF card is in, then this icon is shown. .
To show the drone WiFi signal strength.
Remote Control Signal
Click on this icon to set some parameters as indicated below, and click again to exit.
Click on “Save” to save trimming setting.
Choose “Reset” for factory reset.
Select “720P” transmission quality.
Setting
SETTING
Trimming Save Reset
Transmission quality 720P 480P
Remote Control
Virtual Control Stick
The virtual control stick is hidden by default. Click on the icon to turn on
the virtual control stick.
Gravity Induction Mode
Click on this icon to enter gravity induction control mode. (only available
for flying left / right and forward / backward). Click on the icon again to
exit from gravity induction control mode.
If the mobile phone is tilted to the left / right, the right ball
will move accordingly causing the drone to fly left / right.

19
Click on this icon to take a photo.
Photo
Click on this icon which will become red, as the drone enters Headless Mode.
Click again to exit headless mode and the icon will become white.
Headless Mode
Click on this icon to record a video. The recording time will be shown at the bottom of
the screen. Click on this icon again to finish recording.
Video
If the mobile phone is tilted to the forward / backward direction, the right ball
will roll forward / backward, causing the drone to fly forwards / backwards.
Click on this icon and it will change to red, as the drone flies down slowly and land
on the ground. All the propellers will stop running at this moment.
Click on this icon and it turns red shortly. The drone will fly up automatically and
stay flying at an altitude of 1.2 meters.
One Button Take Off
One Button Landing
H:0.1m
100%
It indicates the drone’s altitude position(As per calibration level).
When the drone battery capacity is around 15%, the phone will vibrate to alarm
the user that the battery is almost exhausted. Kindly fly back the drone for battery
change.
Altitude hold icon
Drone battery status icon
Click on this icon to view or delete the aerial videos and photos. Click on the arrow
to exit.
Media
By default, the drone is in Low Speed Mode “L”. Click on “H” to enter High
Speed Mode.
High / Low Speed Mode

20
APP Flying Control
APP Calibration Instruction
If the drone becomes difficult to operate or hover, you need to re-calibrate the drone .
2. Do not push the left ball before successful calibration. Move the right ball as
the picture on the right shows. The drone
body front light will start flashing,indicating
that the drone is calibrating. When the
drone light becomes solid, this
indicates a successful calibration and the
drone is ready for normal flight.
1. Please refer to “Frequency Pairing between Mobile Phone and Drone WiFi”.
Hold both the left and right balls and push them
inward at a 45 degree angle to activate the
motors (refer to the picture on the left) or press
one button take off to activate the motors .
Left Ball Right Ball
To fly up or down:
Move the left ball up/
down to fly the drone
upward/ downward
respectively
To fly right or left:
Move the right ball to the
left/right to fly the drone to
the left/right respectively
If the drone tilts forward or backward
Click the “-” of the Forward / Backward
Trimmer to adjust the drone for balance
if the drone tilts forward. Click the “+”
to adjust the drone for balance if the
drone tilts backward.
If the drone rotates to left or right
Click the “+” of the Rotation
Trimmer for balance if the drone
rotates to the left. Click the “-” to
adjust the drone for balance if the
drone rotates to the right.
If the drone tilts to the left or right
Click the “+” of the Left / Right
Trimmer for balance if the drone
tilts to the left. Click the “-” to
adjust the drone for balance if the
drone tilts to the right.
To fly forward or backward:
Move the right ball up/down
to fly the drone forwards /
backwards respectively.
To rotate left or right:
Move the left ball to the
left /right to rotate the drone
to the left/right, respectively.