Hubsan X4 DESIRE H502S User manual

®
ITEM NO: H502S
FOLLW ME FUNCTION AND RTH FUNCTION SEE PAGE 17-19
ARM/DISARM MOTORS SEE
COMPASS CALIBRATION SEE
TRANSMITTER CALIBRATION SEE
THE HUBSAN FPV
X4 DESIRE
READ THE INSTRUCTION MANUAL CAREFULLY
Ages 14+
PLEASE VISIT WWW.HUBSAN.COM FOR UPGRADE.

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IMPORTANT SAFETY NOTES
OPERATION:
Flight:
Take responsiblity for the safety to yourself and others when fly the X4 !
Do not fly the X4 in crowded places. It needs enough space to operate.
Do not fly in bad weather.
Never try to catch the X4 while it is in flight.
This model is intended for experienced pilots age 14+.
Power off the X4 after flight to prevent the propellers from causing injuries.
Always remove the battery after you stop flying to avoid injuries from accidentally powering
on the motors.
Always take great caution to protect yourself when nearing the propellers. The flight system
will start after power on regardless of the transmitter signal. The high speed propellers are
very dangerous.
Power off the X4 after every flight, otherwise the propellers may still rotate and cause injury.
Hubsan FPV X4 Desire
2015.01
Please read the instruction manual carefully!
V1.0
Be extremely careful and responsible when using the drone. Small electronic components can
be damaged by crashing or by dropping the X4 into water. To avoid further damages, please
replace the broken spare parts in time.

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INTRODUCTION
1. ITEMS INCLUDED IN THE BOX
Check all the items in the box before use.
S/N Part Name Photos Q'ty Remarks
1 Quad copter 1PC Equipped with smart flight
controller,GPS and compass
Propeller A 4pcs, Propeller
B 4pcs
2 Propellers 8PCS
FPV: First Person View Function enables you to experience every live moment of the flight
from the drone's view.
FPV Transmitter, equipped
with 4 X AA battery (Not included)
3 Transmitter 1PC
Thank you for buying the HUBSAN product. It is designed as an easy-to-use,
multi-functional RC model, capable of hovering, fast forward and aerobatic flight
maneuvers. Please read the manual carefully and follow all the instructions. Be
sure to keep the manual for future reference.
6 Screw-driver 1PC For removing propellers
47.4V LiPo battery 1PC For quad copter
72PCS Disclaimer
Hubsan X4 Instruction Manual
User Manual
610mAh / 7.4V / 15C / 4.5Wh
5 1PCUSB Charger For Li-Po battery charging

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3. QUAD COPTER BATTERY
3.1 INTRODUCTION
The quad copter battery is a rechargeable lipo battery with 610mAh capacity and 7.4V voltage.
The battery should only be charged with the HUBSAN charger.
3.2 INSTALL THE BATTERY
Push the battery into the battery compartment
correctly and connect the battery plugs in
correct polarity. Close the battery compartment
cover.
Please fully charge the batteries to avoid disconnection due to the low voltage.
3.3 CHARGING
Connect the battery to the USB charger, then
connect the USB charger to the USB devices,
such as computer or mobile power.
It takes around 40 to 50 minutes to fully charge
the battery by 500mA current. The USB
LED indicator is in red when charging and will
lights off when the battery is fully charged.
Please unplug the charger and battery when
the charging is completed.
Please make sure the battery being fully charged before the first time use.
7.4V 610mAh 10C
2. QUAD COPTER MOTOR LED INDICATOR
Indicator Status:
Front LED: in blue; Back LED: in red.
1. Power on: 4 LED indicators blink simultaneously every 1.5 seconds.
2. GPS Flight: 4 LED indicators keep lighting.
3. GPS Return : 2 front LED keep lighting, and 2 back LED explosion-flashing every 2
seconds.
4. Headless Flight: 2 front LED explosion-flashing every 2 seconds., and 2 back LED keep
lighting.
5. Low Power Return: 2 front LED keep lighting, and 2 back LED explosion-flashing every 5
seconds.
6. Photo: 2 front LED keep lighting, 2 back LED blink once.
7. Video: 2 front LED keep lighting, 2 back LED blink alternately.
8 . LED indicators can be turned off when taking pictures and videos.

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4. PROPELLERS
● Make sure that the A and B propellers installed correctly. The X4 will not fly if
propellers were improperly installed.
Please match the “I” mark on propellers to the “D” gap on
motor shafts when assembling as figure 1 shows.
“I” Mark
“D”Gap
Attach the propellers to the corresponding motors that
marked by A and B,tighten the propellers and keep the
motors deadlocked with the screw-driver.
<Figure 1>

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5.1 THE FLIGHT ENVIRONMENT
(1) The flying area should be open and without tall buildings or other obstacles; the steel
structure within building would interfere with the compass and the GPS signal.
(2) DO NOT fly in bad weather such as strong wind, heavy snow, rain or foggy day.
(3) Keep away from barriers, people, power cables, trees, and other obstructions.
(4) Do not fly near radio towers or airports.
(5) The X4 control system wil not work properly at the South or North Pole
(6) DO NOT fly in restricted areas and please obey your country's laws and regulations.
5. START TO FLY
High Tension Line RainMagneticAirport
5.2 ARM/ DISARM THE MOTORS
Arm the motors
Method : Pull the left stick to the left lowest corner and the right
stick to the right lowest corner as the picture shows. Release
both sticks after the motors armed.
Disarmed the motors
Method : Pull the left stick to the left lowest corner and the right
stick to the right lowest corner again, and release both sticks after the motors disarmed.
Do not stop the motors during the flight to avoid any crash.
Push the sticks as slightly as you can. Release the sticks after the motors armed or disarmed.

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5.3 BASIC FLIGHT
Transmitter (Model 2) X4 Control Ways
The operation mode for the transmitter including Mode 1 or Mode 2. The manual will use Mode 2 as an
example to illustrate the transmitter’s operation.
The throttle stick controls the ascent and
descent .
Push up the stick and the X4 will ascend.
Pull down the stick and the X4 will descend.
When the stick in center, the X4 will hover and
hold its alititude automatically .
UP
DOWN
Forward
Backward
Right
Left
The Elevator stick moves the X4 forward and
backward.
Push the stick up the and the X4 will fly
forward.
Pull the stick down and the X4 will fly
backward.
When the stick is in center, the X4 will hold its
position.
The angle of stick movement corresponds to
the angle of tilt and flight speed.
The Aileron stick controls left and right flight.
Push the stick to the left and the X4 will fly to
left.
Push the stick to the right and the X4 will fly to
right.
The X4 will keep the current status when the
stick in center.
The flight speed and tilt angle have connection
with the angle when push the sticks.
The Rudder stick controls the rotate direction
Push the stick to the left and the X4 will rotate
counter-clockwise
Push the stick to the right and the X4 will rotate
clockwise.
When the stick is in center,the X4 will keep the
current direction and not rotate.
Any harder push will cause the X4 to rotate
faster in the corresponding directions.
Right rotation
Left rotation

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Press the Photo/Video button for 0.5 second to take photos.
Press the Photo/Video button for 1.5 second to take videos and press again to save the videos.
5.4 PHOTO/VIDEO
Please stop recording before the SD card removed.
PHOTO VIDEO
1. The video will stop when the transmitter battery runs low.
2. When the memory of SD card is full, he screen will display “SD Full”.
3. It is best to use a class 4+ SD card, and the capacity should no less than 4GB.
4. Format the SD card in the transmitter before use.
position 1 (upward)position 2 (downward)
GPS Switch
Photo Button Video Button
RTH Switch
Important Note: The GPS and RTH functions are only available
outdoor.Please make sure the two switches keep downward when
indoor.
The GPS Switch controls the position-hold
function.
In position 1 (up), the GPS function works.
In position 2 (down), the GPS function is
inactive.
For the Photo/Video function, please
always power off the quadcopter and
the transmitter when inserting or
removing the SD card
The RTH Switch controls the automatic return
home function.
In position 1 (up), the RTH function works.
In position 2 (down), the RTH function is
inactive.

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00:23:59
Altitute
GPS 6 N22.7914931 E:114.0479740
GPS 6 N:22.7914650 E:114.0479983
7.3V7.3V
00:00:00
S: 0.1m/s
H: 0.0m
D: 0.0m
R 0
P 0
H 247
The Home Point is recorded when armed the motors with no less than 6 GPS satellites.
!The RTH MODE only works when the GPS mode is activated with no less than 6 satellites.
6.2 RTH MODE (RETURN TO HOME)
ENTER INTO RTH MODE
Push the GPS Switch and the RTH Switch up, and the quad copter will enters into RTH mode.
The flight control system will control the quad copter fly back to the home point and landing
automatically.
6.1 GPS POSITIONING/ HOME POINT SETTING
1.) GPS Positioning works ONLY when the GPS signal has no less than 6 satellites.
2.) Home Point is recorded when armed the motors with no less than 6 GPS satellites.
3.) It should be in an open place to search for the GPS satellites, it’ll take 3 mins to finish the
searching, and the GPS signal strength depends on the flying environment.
Pull up the GPS switch to activate the GPS positioning.
Pull down the GPS switch to exit the GPS positioning and only altitude hold works.
6. ADVANCED PERFORMANCE SETUP
GPS 6
GPS 6
00:23:59
Altitute
N22.7914931 E:114.0479740
N:22.7914650 E:114.0479983
7.3V7.3V
00:00:00
S: 0.1m/s
H: 0.0m
D: 0.0m
R 0
P 0
H 247

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Pull down the RTH Switch, the X4 will exit the RTH Mode.
EXIT RTH MODE
Headless mode means the X4
will default its nose direction
as the up ahead when the mode
is activated.
Follow me mode means the
drone follows the transmitter
automatically due to the
built-in GPS system.
Press the Throttle stick 0.5 second to switch on/ off headless mode.
Press the stick to enter into the headless Mode, indicated by two "beeps" sounds and the
“Headless On” displays on the LCD.
Press the stick again to exit headless Mode, indicated by one "beep" sound and the
”Headless Off” displays on the LCD.
MODE 2 MODE 1
MODE 2 MODE 1
6.3 HEADLESS MODE
6.4 FOLLOW ME MODE

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Press the Elevator stick for 0.5 second to switch on/ off follow me mode.
Press the stick to enter into the follow me Mode, indicated by two "beeps" sounds, the
“ Follow On” displays on the LCD and the drone will turn and face to the
transmitter.
Press the stick again to exit follow me Mode, indicated by one "beep" sound and the
“ Follow Off” displays on the LCD .
!The follow me mode only works when the GPS both on transmitter and on drone with
no less than 6 satellites.
The follow me mode will be exited when you push/press any keys on transmitter
except the throttle.
CONDITIONS WHICH ACTIVATE THE FAILSAFE MODE
(1) Transmitter is power off.
(2) The flight distance is beyond the effective distance of the transmitter’s signal transmission.
(3) The transmitter’s signal was interrupted by some other strong electronic interference.
To ensure that the X4 can return safely to its home point when signal is lost, fly the
X4 in the safe flight area.
If the quantity of GPS satellites drops below six for more than 20 seconds while the
X4 is returning to home, the X4 will descend automatically.
The X4 will not avoid obstacles automatically while in failsafe mode. You must set the
height value to avoid obstacles in the flight path.
6.5 FAILSAFE MODE
The quad copter will enter into failsafe mode when the connection is lost from the transmitter.
The flight control system will control the quad copter to return to the HOME POINT and landing
automatically. The failsafe mode help to aviod injuries or damages.

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LCD
8 Photo
(MODE 1)
4 Elevator Trim
(2) Elevator/Rudder Stick
5 Rudder Trim
6 Throttle Trim
9 Video
(1) Throttle /Aileron Stick
7 Power SW
13 RTH SW12 GPS SW
13 RTH SW12 GPS SW
3 Aileron Trim
LCD
8 Photo
(MODE 2)
4 Elevator Trim
2 Elevator/Aileron Stick
5 Rudder Trim
6 Throttle Trim 8 Video
1 Throttle /Rudder Stick 7 Power SW
3 Aileron Trim
10 Video glasses socket
No function 11 TF card plug
14 USB Plug
HOME
Voltage
Quad copter’s
battery capacity
Recording time
SD Card Transmitter’s
battery capacity
Trimming
The display keep updating according to different functions
(eg:GPS Hold,Return Home,Follow me, Expert）
longitude &latitude
Record/Camera
status
Flight time
Speed
Altitude
Distance
GPS Signal
Quad copter’s GPS
Transmitter’s GPS
00:23:59
Altitute
GPS 6 N22.7914931 E:114.0479740
GPS 6 N:22.7914650 E:114.0479983
7.3V7.3V
00:00:00
S: 0.1m/s
H: 0.0m
D: 0.0m
R 0
P 0
H 247
HOME
7. TRANSMITTER

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7.1 INPUT KEY FUNCTION
MODE 2
S/N Mode/ Control Function
MODE 1
(1)
Throttle/Aileron Stick
Push the stick forward or backward and the quadcopter will
ascend or decend; Push the stick left or right and the quadcopter
will fly to left or to right.
Push the stick forward or backward and the quadcopter will
ascend or decend; Push the stick left or right and the quadcopter
will rotate in counter clockwise or in clockwise
MODE 1
(2)
Elevator/Rudder Stick
Push the stick forward or backward and the quadcopter will fly
forward or backward;Push the stick left or right and the quadcopter
will rotate in counter clockwise or in clockwise.
Push the stick forward or backward and the quadcopter will fly
forward or backward;Push the stick left or right and the quadcopter
will fly to left or to right
3 Aileron Trim Aileron trim adjusts for left and right drift.
4 Elevator Trim Elevator trim adjusts for forward and backward drift.
5 Rudder Trim Rudder trim adjusts for drift of left and right rotation or yaw.
6
Throttle Trim Throttle trim normally left at neutral. The lower trim turns LEDs
on and off.
7 Power Switch Push to ON to turn on the transmitter. Push to OFF to turn off.
MODE 2
2
Elevator /Aileron Stick
1
Throttle/ Rudder Stick
8
14
10
11
Photo
9
Video
USB plug
Video glasses socket
TF card plug
Press the photo button to shoot photos;
Press video button and start the record and press again to stop
Only for engineer to upgrade the software, please do not use it to
connect computer
Connect Hubsan video glasses (The video glass is excluded)
The TF card can be inserted into the card plug on theTX or the
quad copter.
(Recommend on the quad copter )
12
GPS SW Push the switch up, the bulit-in GPS will calculate the quad
copter’s position and height and help to keep the quad copter in a
stable hover (ONLY FOR OUT DOOR)
13
RTH SW Push the switch up, the quad copter will return to the home
point automatically ( ONLY FOR OUT FOOR)

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● Do not mix old and new batteries ● Do not mix different types of batteries
● Do not charge non-rechargeable battery.
7.2 INSTALL THE TX BATTERY
Close the cover
Remove the cover Install 4 x AA batteries
according to the correct polarities
PUSH PUSH
7.3 REVERSING CHANNEL SETUP
If you would like to reverse any of the stick functions due to personal preference then follow
the instructions below. Be aware that it will change the controls back to front.
Pull the throttle stick to the lowest position and long press the Pitch stick simultaneously to
enter into MAIN MENU interface. Push the Elevator stick up/down to select “Set Reverse”.
Select the “Exit” to exit.
7.4 SENSITIVITY SETUP
If you would like to change the sensitivity of any of the stick functions then follow the
instructions below.
Pull the throttle stick to the lowest position and long press the Elevator stick to enter into the
MAIN MENU interface. Push the Elevator stick up/down to select “Set Sensitive”, push the
stick right to enter into the “ set sensitive” interface, select “Expert mode” or “ Normal mode”.
Select” Exit” to exit.
0:08:49
SET REVERSE
NormalRudder
Aileron Normal
Normal
M2
Exit
Elevator
0:08:49
MAIN MENU
Set Reverse
Set Sensitivity
5.8G Frequency
Set Manual
Exit
M2

15
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1. When the power on the transmitter runs low, the red LED will blink quickly and the LCD
screen will turn black, also the transmitter and X4 may disconnect. Please replace with new
batteries.
2. If the batteries in the transmitter runs low while flying the X4, you can still control the X4,
please land the X4 and then replace batteries.
3. The Transmitter can only use 2S Lipo batteries, 4XAA batteries or NI-MH AA batteries,
other batteries will damage the Transmitter.
Notice：
7.5 MANUAL MODE SETUP
If you would like to make acrobatic flights, such as throwing, please switch off the GPS
function and follow the instruction below to enter into the Manual mode
Pull the throttle stick to the lowest position and long press the Elevator stick to enter into the
MAIN MENU interface. Push the Elevator stick up/down to select “Set Manual”, push the
stick right to enter into the “ SET MANUAL” interface, select “ON” (without altitude function)
or “OFF” (with altitude function).Select” Exit” to exit.
Sensitivity default setting is in Expert Mode.
0:08:49
SET SENSITIVE
Elevator :
Aileron :
Rudder :
100
100
100
M2
Exit
Expert mode
0:08:49
MAIN MENU
Set Reverse
Set Sensitivity
5.8G Frequency
Set Manual
Exit
M2
Manual Mode default setting is OFF.
0:08:49
SET MANUAL
M2
Exit
OFF
0:08:49
MAIN MENU
Set Reverse
Set Sensitivity
5.8G Frequency
Set Manual
Exit
M2

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8. COMPASS CALIBRATION
Hold down the throttle stick
Bob the GPS switch quickly, the LCD
screen displays “Calib compass 1”
Rotate the X4 in clock-wise
until the LCD screen displays
“Calib compass 2”
Put the X4 nose down and rotate
it in counter clock-wise until
the ‘Calib compass 2” disappears
START
Calibration done
COMPASS CALIBRATION PROCEDURES
Please follow the calibrating procedures before the first flight.
1.) Hold the Throttle Stick fully down, bob the GPS switch quickly until the transmitter displays "
Calib compass 1"
2.) Rotate the X4 horizontally in clock-wise until the LCD screen displays " Calib compass 2"
3.) Put the X4 nose down and rotate it vertically in counter clock-wise until the " Calib compass
2" on screen disappears.
4.) Calibration done.
Do not calibrate the compass in a strong magnetic field
Do not carry ferromagnetic materials with you while calibrating the compass,
such as keys, cell phones.
Compass calibration is required before the first time flight otherwise the system may not work
properly. The compass is very sensitive to electromagnetic interference which can cause
abnormal compass data and lead to poor flight performance or even flight failure. Regular
calibration enables the compass in optimum performance.

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The transmitter will automatically find the best frequency to ensure a live video with good
quality of transmission. Please re-select the frequency from 5730MHZ to 5845MHZ to get a
better video transmission when necessary.
Pull the throttle stick to the lowest position and press the Elevator stick for 1.5 second to enter
into the MAIN MENU interface. Push the Elevator stick up/down to select “5.8G Frequency”,
push the stick to the right to enter into the “ 5.8G frequency” interface, select a matched
frequency.
0:08:49
MAIN MENU
Set Reverse
Set Sensitivity
5.8G Frequency
Set Manual
Exit
M2
5.8G FREQUENCY
0:08:49
Exit
5730MHZ
M2
Mode 2: Push both sticks to the upper left corner and power on the transmitter
simultaneously,rotate both sticks in circles for twice, then press any trim for 1.5 second until
the LED on the transmitter turns in solid green which indicating a successful calibration.
Mode 1: Push the left stick to the upper left corner and the right stick to the upper right corner
and power on the transmitter simultaneously, rotate both sticks in circles for twice, then press
any trim for 1.5 second until the LED on the transmitter turns in solid green which indicating a
successful calibration.
The transmitter mode can be shifted according to the above operation.
!
9. TRANSMITTER CALIBRATION
10. FREQUENCY SELECTABLE 5.8GHZ

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EXPLODED VIEW

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01
02
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05
06
07
08
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13
14
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1
1
1
1
1
2
2
1
2
2
1
1
1
1
1
1
1
1
4
2
2
1
1
4
4
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4
8
12
12
4
2
4
18
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NO PART NAME QTY PART NAME QTY
Lower Boby Shell
5.8 GHz Transmission Module
Main Control Board
Compass Module
GPS Module
Blue LED
Red LED
Camera Module
Motor A
Motor B
Li-Po Battery
5.8G Attenna
2.4G Attenna
Upper Boby Shell
GPS Shielding Case
Battery Cover
Lens Holder
Eye Lampshade
Rubber Feet
Propeller A
Propeller B
Signal Isolation Membrane
Battery Compartment
Motor Holder
Rotary Gear
Motor Gear
Motor Shaft
Bearing
Screw
Screw
Screw
Screw
Screw

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H502S SPARE PART CHART
H502S-01
Body Shell Set H502-01 Battery Cover H502-02 Eye Lampshade H502S-02 Lens Holder H502-03 Lamp Base A/B H502-04
Screw Set
H502S-03
Propeller A/B H502-05 Motor A H502-06 Motor B H502-07 Motor Holder H502-08
Bearing H502-09 Motor Gear A
H502-10
Motor Gear B H502-11 Motor Shaft H502-12 LED Kit H502-13 2.4G Module H502S-06 Camera Module
720P
H502-14
GPS Module
H501S-13
Compass Module
H502S-05
Crash Pack H502-21 Battery Pack
H502-16
Battery H502-17
TX H502-18 USB Charger H502-19 Screwdriver H502S-04 Camera Module
1080P