UDI R/C VOYAGER U845Wifi User manual

User Manual
U36W
Altitude Hold Mode
Aerial Photography / Real-time FPV / WiFi Control
Heading Hold Mode / Low Battery Alarm
Out of Range Alarm / One Button Take Off/Landing
High/Low Speed Mode / Custom Route Mode
Piglet

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Catalog
Important Statement 3
Safety Precautions 3
Safe Notice for Drone Battery 6
Charging Instruction for Drone Battery 6
Check List Before Flight 7
Instruction for Drone and Transmitter 8
Pre-flight Operation Instruction 13
Functions Introduction 19
Spare Parts Installation Instruction 24
To know your APP 25
Spare Parts 35
Troubleshooting Guide 37

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Important Statement
Thank you for buying UDIRC's product. People who under 14
years old must not use the product. Please read this brochure
carefully before using the product. You are regarded as
accepting all content in this user manual when using this drone.
This product is not an ordinary toy but a piece of complicated
equipment which is integrated with professional knowledge by
mechanic, electronic, air mechanics, high-frequency emission
etc. The users promise to be responsible for their behavior
when using this product and relevant APP. The users promise
to use the drone and relevant APP for legal purpose, and
agree to obey above rules and local laws and regulations.
We undertake no liability for those accidents caused by
environment, illegal behavior, improper operation and refitting
of the drone after sale of the product.
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.
* Keep the packing and user manual so as to refer to the
important information whenever.
This drone is suitable for experienced RC drone user aged 14
years or above. This product contains small parts, please put
it out of child’s reach.
Safety Precautions

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The flying field must be legally approved by your local
government. Do not fly the drone near in the airport. Keep far
away from the airport more than 5km when flying a RC drone.
Flying field must spacious enough and we suggest at least
8M (length)*8M (width)*5M (height).
(1) Flying Area
(3) Keep away from obstacles and crowd
The speed and status of a flying RC drone is uncertain and it
may cause potential danger. So the user must keep away from
crowd, tall building, power lines etc. when operating a flying
RC drone. Do not fly a RC drone in rainy, storm, thunder and
lighting weather for the safety of user, around people and their
property.
(2) Use correctly
For safety elements, please only use UDIRC’s spare parts to
replace the damaged parts. Improper assembly, broken main
frame, defective electronic equipment or unskilled operation
all may cause unpredictable accidents such as drone damage
or human injury. Please pay special attention to safety
operation and have good knowledge of accident responsibility
that the user may cause.
(4) Keep away from humid environment
The drone inside is consisted of precise electronic
components. Humidity or water vapor may damage electronic
components and cause accident.

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(5) Safe operation
Please operate the RC drone in accordance with your physical
status and flying skill. 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 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 building, high voltage cable or
other place with signal interference. Or may cause signal
interruption and the drone will out of control, which may result
of accident.
(9) Do not touch the hot motor 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 can work well. If
there is any damage, stop using it immediately till it’s fixed well.
The RC drone is made of metal, fiber, plastic, electronic
components etc. Keep away from heat and sunshine to avoid
distortion and damage.

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Safe Notice for Drone Battery
* Do not put the battery on high temperature place, such as
fire or heating device to avoid damage or explode.
* Do not use the battery to crash or 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 charger’s wire, plug, surface regularly. Do not
use any broken charger.
* If do not fly the drone more than one week, maintain the
drone battery with about 50% power to keep its performance
and working life.
* For faster charging, it is recommended to use an adapter
with 5V 2A output current (not included) to charge the battery
Charging Instruction for Drone Battery
1. Connect the drone battery with USB cable first and then
choose one of the method as below picture shown to
connect with USB plug.
2. The red USB indicator light keeps bright when charging and
the light turns green when fully charged( The switch must
be powered off when charging).

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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.
Power BankPhone Charger
Computer Charging Car Charger
Check List Before Flight
1. Make sure the drone battery and transmitter battery are fully
charged.
2. Make sure the Left Stick of the transmitter in the middle
position.
3. Please strictly obey the order of turn on and turn off before
operation. Turn on the transmitter power first and then turn
on the drone power before flying; turn off the drone power
first and then turn off the transmitter power when finish
flying. Improper turn on and turn off order may cause the
drone out of control and threaten people’s safety. Please
cultivate a correct habit of turn on and turn off.
4. Make sure the connection is solid between battery and
motor etc. The ongoing vibration may cause bad connection
of power terminal and make the drone out of control.

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5. Improper operation may cause drone crash, which may
arouse motor defective and noise, and then effect the flying
status or even stop flying. Please go to the local distributor
to buy new parts for replacement so that the drone will
return to its best status.
Instruction for Drone and Transmitter
Drone
Propeller Guard
Propeller Guard
Propeller Guard
Propeller Guard
Switch
Rear
RightLeft
Camera
Front
Drone Cover
Housing

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Specification
Drone Size
Drone Weight
Propeller Diameter
Drone Battery
Flying Time
66x66x37mm
23g
Ø32mm
3.7Vx180mAh
25~30 minsCharging Time for Drone Battery
640*480
0614*4
5~7 mins 2.4Ghz
10~15 m
Camera Resolution
Frequency
Max Flying Distance/Radius
Main Motor
B Propeller
A Propeller
Drone Bottom
Housing
A Propeller
B Propeller
Rear LED (Red)
Front LED (Green)

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No.
1
Name
Drone Cover Housing
2Propeller Guards
3Camera PCB
4Clockwise Motor (Red and Blue Wire)
5B Propeller (Counterclockwise)
6Counterclockwise Motor (Black and White Wire)
7A Propeller (Clockwise)
Camera Lens
Camera Head Cover
Lipo Battery
Switch Board
Receiver Board
Drone Bottom Housing
Name
8
9
10
11
12
13
No.
Exploded View
1
2
3
2
4
5
6
7
8
95
4
7
2
6
13
2
12
11
10

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Trimmer mode button ( Press Down)
Transmitter
Left Stick
(Throttle / Rudder) Right Stick
(Forward /
Backward / Left /
Right)
High / Medium /
Low Speed Mode
Heading Hold
Mode
Take Off /
Landing /
Emergency Stop
Button Power Switch
Power Indicator Light
UA20UA20UA20

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Brief Introduction for Button Functions
High / Medium/Low
Speed Mode
Left Stick
Right Stick
Power Switch
Press down the Left Stick to switch to High /Medium/ Low Speed
Move the Stick to forward / backward / left / right to fly the drone
to up / down / turn left / turn right.
Move the Stick to forward / backward / left / right to fly the drone
to forward / backward / left / right.
Push up the power switch to turn on the transmitter, and pull
down to turn off.
Heading Hold Mode Press the button to enter heading hold mode, and press again to
exit from heading hold mode.
Trimmer mode
Button
Press down this button,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.
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 drone propellers will
stop and fall down immediately.
Open the battery cover on the back side of the transmitter and
put 3 alkaline batteries (AAA, not included) into the box in
accordance with electrode instructions, as picture shown.
Battery installation:
3X1.5V
Alkaline Batteries
Battery Cover

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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:
Pre-flight Operation Instruction
Frequency Pairing
1. Turn on the transmitter switch (Picture 1) and the power
indicator light flashes rapidly. Push the Left Stick all the
way down to the lowest position and then release. The Left
Stick will back to the middle position automatically.
(Picture 2 / 3) The power indicator light flashes slowly,
which indicates the transmitter is ready for frequency pairing.
2. Power on the drone. (Picture 4）
3. Put the drone on the flat surface, the drone body lights turn
from flashing to solid bright, which indicates successful
frequency pairing.
Picture 2Picture 1 Picture 3
Picture 4

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Important Notice: Please make sure the drone is placed on the
horizontal position after powering on the drone,
so that the drone can work well.
Checklist before Flight
1. The camera is in front of the drone. Keep the drone front
away from you.
2. Power on the drone and check the direction of the rotating
propellers. The left front and right rear A propellers rotating
clockwise while the right front and left rear B propellers
rotating counterclockwise.
5. It’s recommended to repeat above Steps 4 to practice.
6. Adjust relative transmitter Trimmer button to adjust the
rudder if the drone tilts to one side when flying.
4. After starting the motors, push up the left stick to fly up the
drone slowly, and then pull down the left stick to the lowest
position slowly, then the drone lands on the ground.
3. Move the Left Stick and Right Stick at the same time as
Picture 5 shown(45 degree inward) to start the motors and
repeat previous step again to lock the motors.
Picture 5

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Calibration Instruction
Please follow below steps to calibrate the drone if the drone
becomes imbalance after crashing during the flight, and can
not be adjusted by trimmer button and cause difficult operation.
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 6) and then
release. The Left Stick will back to the middle position
automatically (Picture 7). The transmitter is ready for
frequency pairing mode.
Picture 6 Picture 7
3. Power on the drone and put it on a flat surface in a horizontal
position. The drone body lights change from flashing to
solid bright, which indicates successful frequency pairing.
4. Do not move the Left Stick before
successful calibration. Push the
Right Stick as Picture 8 shown and
then release. The drone body lights
flash, which indicates that the drone
is calibrating. When the drone body
lights become solid, which indicates successful calibration.
Notice: When the drone is fiercely impacted or crashed, it may cause
the gyro can not recover and cause difficult control, if so, then
you need to power off and power on again to calibrate.
Picture 8

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Flying Control
Notice: Every time before the drone take off, move the Left Stick and
Right Stick at the same time as Picture 5 shown(45 degree inward) to
start the motors. Push up the Left Stick slowly to fly up the drone or
press down the one button take off .
Left Stick
Move the stick to the left,
then the drone turns to left
Move the stick to the right,
then the drone turns to right
Push up the stick,then
the drone flies up
Pull down the stick, then
the drone goes down

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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

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Forward and backward trimmer
When take off, if the drone tilts forward,
press down the left stick in the center,
and push the right stick backwards.
Otherwise push forwards.
Left and right turning trimmer
When take off, if the drone head rotates
to left,then press down the left stick in
the center and push left stick to right.
Otherwise push to left.
Left and right side flying trimmer
When take off, if the drone tilts to left,
then press down the left stick in the
center and push the right stick to right
side. Otherwise push to left.

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Take Off / Landing / Emergency Stop Button
Two Take Off Methods
Functions Introduction
2. Method 2 (One Button Take Off): Press the Take Off /
Landing / Emergency Stop Button (Picture 9) , the drone
will fly up automatically and keep flying at an altitude of 1.2
meters approximately.
1. Method 1 (Take off) : After frequency pairing successful,
then move the Left Stick and Right Stick at the same time
as Picture 5 shown(45 degree inward) to start the motors.
Push up the Left Stick to fly up the drone to certain altitude
and then release the stick.
Picture 9
2. Method 2 (One Button Landing): Press the Take Off /
Landing / Emergency Stop Button once shortly(picture 9),
and the drone will land on the ground automatically.
(When using this function, you can not touch the left stick, if not,
then the function will fail)
Landing Methods
1. Method 1 (Landing): Push the Left Stick all the way down
to the lowest position(Picture 2/6) and hold it till the motors
stop and the drone will land on the ground.

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▲Emergency Stop: When the drone in emergency situation
and going to hit the walking people or obstacle etc., press
the Take Off / Landing / Emergency Stop Button
immediately and hold it for more than 1s. The propellers
will stop immediately.
Tip: Do not use the emergency stop function unless in emergency
situation. The drone will fall down suddenly after all
propellers stop.
Altitude Hold Mode
Altitude hold mode indicates that the drone maintains a
consistent altitude while allowing roll, pitch, and yaw to be
controlled normally. It makes easier to control the drone for
beginner and more stable for aerial photography.
Push the Left Stick up (down) to fly the drone up (down) at
certain altitude and then release the Stick. The Stick will back
to the center position (Altitude Hold Center) as Picture 10
shown. And the drone will keep flying at current altitude.
Repeat above steps if you want to change the drone altitude
(Default mode).
Altitude Hold CenterPicture 10