MJX MEW4-1 User manual

Farther.Faster.Clearer
User Manual
MEW4-1

Contents
Product Profile
Introduction
Prepare Your MEW4-1
Prepare the Remote Controller
Major Parts & Functional Switch
Flight Modes
Aircraft Status Indicator Lights
Return to Home (RTH)
Vision System
Aircraft Power Switch
Aircraft Battery
Attach and Detach the Propellers
Remote Controller Functions and Status
Throttle Control Stick Mode
Install Mobile Phone Holder
FPV Real-time Image Transmission Software “X-DRONE”
Flight Environment Requirements
Pre-flight Checklist
Aircraft Operations
Test Flight
Product Parameters
Packing Detail
Important Statement
Flight Safety Guidelines
1
1
2
3
5
6
7
8
10
10
11
13
17
18
19
21
21
22
26
27
30
31
31
Aircraft
Remote Controller
App Download & Installation
Flight
Appendix

Unfold the aircraft
The aircraft is folded inside the package. Please unfold the aircraft before use.
● Equipped with Vision System and GPS System, your MEW4-1 can precisely position, hover and automatically return. It is also capable of
flying in the intelligent flight modes like Point of Interest, Follow Me and Waypoint Flight. Features a single-axis gimbal, your MEW4-1 can
shoot 2K, 2-megapixel photos and adjust camera angle 90 degrees in flight.
● The aircraft and camera can easily be controlled using the onboard buttons. Real-time images and aircraft data information can be shown
on the “X-DRONE” APP. Foldable hand sticks and pull-out holder design make the remote controller easier to operate and carry.
Prepare Your MEW4-1
Introduction
Product Profile
This section mainly introduces
functions and installation guidelines
of MEW4-1 and lists the components
of the aircraft and remote controller.
-1-

Install the battery of remote controller
Prepare the Remote Controller
!● Insert batteries with correct polarity.
● Non rechargeable batteries are not to be charged; the transmitter need 2*AA batteries for work.
● Do not mix old and new batteries.
● Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel-cadmium) batteries.
● Rechargeable batteries are to be removed from the aircraft before being charged.
● Rechargeable batteries are only to be charged under adult supervision.
● Exhausted batteries are to be removed from the aircraft.
● The supply terminals are not to be short-circuited.
Step 1: Unfold the hand sticks and open the battery door (Pic. 1);
Step 2: Install 2*AA batteries into the battery compartment according to the given polarity (Pic. 2);
Step 3: Close the battery compartment (Pic. 3).
Pic. 1 Pic. 2
MEW4-1 User Manual
Battery installation
!
Step 1. Insert the battery into socket at the top of the aircraft (Pic. 1);
Step 2. Slide the battery into the compartment by pushing with appropriate force. Make sure that you hear a click sound indicating the
battery is firmly installed (Pic. 2).
Attention: The battery should be installed firmly, failure to do so may affect the flight safety of your aircraft. The aircraft
may crash due to power-cut during the flight.
Pic. 1 Pic. 2 Pic. 3
-2-

MEW4-1 User Manual
[1]
[2]
[3]
[4]
[6]
[7]
[5]
[1] Photo/Video
[2] Left stick
[3] One-key unlock/lock
[4] One-key RTH
[5] Right stick
[6] Power switch
[7] LCD display
[9]
[7] Ultrasonic sensor
[8] Bottom lights
[9] Vision positioning
lens
[7]
[8]
[1] Power switch
[2] Brushless motor
[3] Undercarriage
[4] Battery
[5] Propeller
[6] Camera
[1]
[2]
[3]
[5]
Major Parts & Functional Switch
[6]
[4]
-3-

MEW4-1 User Manual
[11]
[11] GPS/Gesture
mode switch
[8] One-key takeoff/
one-key landing
[9] Gimbal trimmer
[10] Light switch
(short-press);
High/Low speed
switch (long-press)
[8] [10]
[9]
-4-

Flight Modes
Pic. 1 Pic. 2
GPS mode: ON
Your MEW4-1 has 3 flights modes:
Gesture mode: OFF
Slide the button down to “OFF” (Pic. 2), the aircraft is in Gesture mode that GPS is not used for positioning, and the aircraft only uses the
barometer to maintain altitude. The aircraft will not fly with precise positioning and hovering. Gesture mode requests pilot with good skill.
In Gesture Mode, the aircraft cannot position itself or brake automatically, which increases the risk of potential flight hazards. The aircraft
will be also more easily affected by its surroundings. Environmental factors such as wind can result in horizontal shifting, which may present
hazards, especially when flying in confined spaces.
Aircraft
This section introduces functions and
features of the MEW4-1.
Vision positioning mode:
Once the GPS signal is weak or unavailable and the flying altitude is less than 3 meters, the aircraft will automatically enter into vision
positioning mode. Assisted by the vision system, the aircraft could perform precise positioning.
Slide the button up at the right side to position “ON” (Pic.1), the aircraft is in GPS mode and can precisely position and hover by the
assistance of the GPS module.
Warm tips: When the GPS signal is weak, the aircraft will automatically enter into Gesture mode (flying altitude ≥ 3 meters) or vision
positioning mode (flying altitude 3 meters).
-5-

MEW4-1 User Manual
Aircraft status indicator
Rear light flashes red once, stop for 1.5 second. Something wrong with the gyroscope.
12
11
Rear light flashes red five times rapidly. Something wrong with ultrasonic altitude hold data and the
aircraft is in barometer altitude hold.
10
Rear light flashes red twice, stop for 1.5 second. Something wrong with the barometer.
No.
1 Rear light flashes yellow rapidly. Aircraft 2.4GHz disconnected.
2Rear light flashes red, green and yellow alternatively. Aircraft is in initialization detection status.
3 Rear light glows solid yellow. No GPS signal, aircraft is in gesture mode.
Indicator status Meanings
4 Rear light glows solid green. Good GPS signal, aircraft is preparing for GPS mode.
5 Rear light flashes green rapidly. Aircraft is in gyroscope calibration status.
6 Rear light flashes yellow slowly. Aircraft is in compass horizontal calibration.
7 Rear light flashes green slowly. Aircraft is in compass vertical calibration.
8 Rear light flashes red slowly. Aircraft is nearly low voltage, 1/6 battery level left.
9 Rear light flashes red rapidly. Aircraft is in low voltage, only 1/8 voltage left.
Aircraft Status Indicator Lights
Rear light
-6-

13 Rear light flashes red three times, stop for 1.5 second. Something wrong with the compass.
14 Rear light flashes red four times, stop for 1.5 second. Something wrong with the GPS module.
15 Rear light flashes red five times, stop for 1.5 second. Something wrong with the ultrasonic module.
16 Rear light flashes red six times, stop for 1.5 second. Something wrong with the vision positioning module.
No. Indicator status Meanings
Smart RTH
MEW4-1 User Manual
!● Aircraft can not avoid obstacles when it is flying back with the RTH function initiated.
● Aircraft can not return to the Home Point when the GPS signal is weak or unavailable.
● Aircraft will stop ascending and immediately return to the Home Point if user moves the throttle stick in the
aircraft reaches 15 meters altitudes or beyond during Smart RTH.
● If there is no GPS signal and the remote controller signal lost for more than 6 seconds, the aircraft can not
Return-to-Home but descend slowly until land to the ground and lock the aircraft.
The Return-to-Home (RTH) function brings the aircraft back to the last recorded Home Point. There are 3 types of RTH: smart RTH, low
battery RTH and failsafe RTH. This section describes these 3 scenarios in detail.
Return to Home (RTH)
Home Point
GPS Description
If a strong GPS signal (satellites over 7) was acquired before takeoff, the Home Point is the location from
which the aircraft launched. The GPS signal strength is indicated by the GPS icon ( ). The aircraft rear
indicator lights will blink rapidly from yellow color to green color when the home point is recorded.
When the GPS signal is available (more than 7 satellites is presented), use the RTH button on the remote controller (Pic. 1) or tap the
RTH button in the “X-DRONE” APP (Pic. 2) and then follow the on-screen instructions to initiate Smart RTH. During the smart RTH, you can
use the remote controller to guide the aircraft around obstacles. You can press the RTH button again to exit RTH procedure and regain
control of the aircraft.
Pic. 1 Pic. 2
-7-

Low Battery RTH
The low battery level failsafe is triggered when the intelligent battery is depleted to a point that may affect the safe return of the aircraft.
Users are advised to return home or land the aircraft immediately when prompted.
1. When the aircraft rear lights flash slowly, battery icon “ ” is shown on the remote controller or on the “X-DRONE” APP. And steady
“beep beep beep... beep beep beep” sound is heard. At this moment, the aircraft will automatically return to the Home Point if the flying
altitude is beyond 50 meters or the flying distance against the home point is beyond 100 meters.
Vision System
②
①
MEW4-1 User Manual
Failsafe RTH
If the Home Point was successfully recorded and the compass is functioning normally, Failsafe RTH will be automatically activated if the
remote controller signal is lost beyond 6 seconds. Return-to-Home can be cancelled by the pilot, allowing them to regain control when the
remote controller signal connection is re-established.
!Attention: When the aircraft is automatically return home with Low Battery RTH function activated, you can not cancel
the RTH procedure by pressing the RTH button to regain control of the aircraft.
2. When the aircraft rear lights flash slowly, battery icon “ ” is shown on the remote controller or on the “X-DRONE” APP. And steady
“beep..beep...beep” sound is heard. At this moment, the aircraft will automatically return to the Home Point if the flying altitude is beyond
15 meters or the flying distance against the home point is beyond 15 meters. If the aircraft flying altitude is less than 15 meters or the
flying distance is less than 15 meters, the aircraft will automatically land to the ground.
Consisted by camera ①and ultrasonic sensor ②, the Vision System locates at front bottom of your MEW4-1. It is a positioning system
that is composed by image sensor and ultrasonic sensor. Your MEW4-1 acquires its location through using the camera sensor to detect the
ground texture and visible features. Meanwhile, assisted by the ultrasonic sensor, your MEW4-1 could determine the altitude where it stays,
which could better insure the fly safety and gain precise positioning.
-8-

!Attention: Keep animals away from the aircraft when the vision system is activated. The ultrasonic sensor emits high
frequency sounds that are audible to some animals.
● Keep sensors clean at all times.
● The vision system is only effective when the aircraft is within the altitude range of 3 meters.
● Make sure that the light is bright enough and the surfaces is with clear textures so that the vision system can acquire
the movement information through recognizing the ground textures.
● The vision system may not function properly when the aircraft is flying over water, low light ground and surfaces
without clear patterns or textures.
● Do not use other ultrasonic device with a frequency of 40KHz when the vision system is in operation.
!The precision of the vision system is easily affected by the light strength and features of the surface textures. It would
happen that the ultrasonic sensor could work normally to detect the altitude when it is flying over objects that is made
by sound-absorbing materials. Once the image sensor and ultrasonic sensor are both not available, your aircraft will
switch to Gesture mode automatically. Be cautious to operate the aircraft in the following situation:
1. Fly fast at an altitude below 0.5m.
2. Fly over monochrome surfaces (like pure black, pure red, pure red and pure green).
3. Fly over strong light reflective surfaces or surfaces prone to reflection.
4. Fly over water or transparent object surfaces.
5. Fly over moving object surfaces (such as crowds, swaying juggles and glass).
6. Fly over an area where light changes dramatically and rapidly.
7. Fly over surfaces extremely dark (lux<10) or extremely bright (lux>10,000).
8. Fly over material surfaces that is good at absorbing ultrasonic waves (like thick carpet).
9. Fly over surfaces without clear textures.
10. Fly over surfaces with highly repeating textures (small grid brick in the same color).
11. Fly over surfaces that are tilting over 30 degrees (could not receive the echo of the ultrasonic wave).
12. Flying speed should be controlled not to be too fast. When the aircraft is 1 meter against the ground, the flying speed
should not be over 5m/s; When the aircraft is 2 meter against the ground, the flying speed should not be over 14m/s.
MEW4-1 User Manual
Vision Positioning System function
The Vision Positioning System is typically used in indoor environment when GPS is weak or unavailable. It works best when the aircraft
altitude is less than 3 meters.
3m
-9-

USB
MEW4-1 User Manual
Turn on the aircraft
Turn off the aircraft
Charge the aircraft battery
Aircraft Battery
● Made by high-energy battery cells;
● Standard battery capacity is 7.6V 2050mAh.
Aircraft battery
Power adaptor
(not included)
USB cable Charger Battery
Charger
● The aircraft’s battery needs to be fully charged before every flight;
● Please use the original default charging device for this aircraft;
● Full Charging time takes about 3-5 hours.
Once battery is installed firmly, press on the power switch for 3 seconds, the aircraft makes beep sounds and the rear light keeps flashing.
Press on the power switch for 3 seconds, the aircraft light goes off and the MEW4-1 turns off.
Aircraft Power Switch
-10-

MEW4-1 User Manual
Attach the propellers
Install propeller A and propeller B on the corresponding motor shaft and fix the propellers screws tightly by rotating clockwise. (A/B mark
are at the bottom of the propeller.)
Attach and Detach the Propellers
!● Need adult supervision when this aircraft is being played by children.
● Only batteries of the same or equivalent type as recommended are to be used.
● Insert batteries with correct polarity.
● Rechargeable batteries are to be removed from the aircraft before being charged.
● Rechargeable batteries are only to be charged under adult supervision.
● Exhausted batteries are to be removed from the aircraft.
● The supply terminals are not to be short-circuited.
● The charging line to be used with the product should be regularly examined for potential hazard, such as damage to
the cable or cord, plug, enclosure of other parts and that in the event of such damage, the product must not be used
until that damage had been properly removed.
A B
B A
-11-

MEW4-1 User Manual
Detach the propellers
Take out the screws by rotating counter-clockwise and then remove the propellers.
!● Please make sure that the clockwise and the counter-clockwise propellers are installed on the correct motors, because
the aircraft will not fly normally for wrong propellers installation.
● Be aware of the sharp edges of the propellers. Handle with care.
● Use only original default propellers. DO NOT mix propeller types.
● Stand clear of the motors and DO NOT touch the propellers when they are spinning.
● Check that the propellers and motors are installed correctly and firmly before every flight.
● Ensure that all propellers are in good condition before each flight. DO NOT use aged, chipped, or broken propellers.
● To avoid injury, STAND CLEAR of and DO NOT touch propellers or motors when they are spinning.
● ONLY use original default propellers for a better and safe flight experience.
A B
B A
-12-

Flight mode switch
Remote Controller Functions and Status
Remote Controller
This section describes the features
of the remote controller, including the
instruction on controlling the MEW4-1.
GPS mode
Gesture mode
Choose the flight mode by switching the GPS button to ON/OFF position. The on-working flight mode “ ” is shown on the LCD display.
-13-

MEW4-1 User Manual
Aircraft status indicator
Battery is low “ ” ; the aircraft will return when the
altitude is over 15m or the distance is over 15m; if either
the flying altitude or flying distance is less than 15m, the
aircraft will land to the spot.
Battery is running out “ ”; the aircraft will return when
the altitude is over 50m or the distance is over 100m.
Battery legend “ ” on LCD display is as shown, with steady long beep
sound.
Battery legend “ ” on LCD display is as shown, with steady “beep beep
beep...beep beep beep” sound.
No.
1
2
3
4
5
Remote controller status
Signal strength indicator changes circularly from weak to strong.
Signal strength on LCD display is less than two grids or no displaying,
with steady long beep sound.
The remote controller is under signal connection status.
The remote controller is in low voltage status. Please
change a full charged battery.
1. The distance between aircraft and remote controller
is so long that the signal is weak.
2. The battery is removed after the aircraft connects to
the remote controller.
Description
Indicator lights flash slowly with steady “beep beep... beep beep” sound
and the battery legend “ ” on LCD display flashing.
LCD Screen display
Remote controller
battery level
GPS mode
Satellite
amount
Altitude against
Home Point
Photo/Video
Return to Home
(RTH) icon
Aircraft battery
level
Remote controller
throttle mode
Distance against
Home Point
Signal strength
High/Low speed
mode
-14-

The camera can be rotated by 180 degrees.
A
B
180°
MEW4-1 User Manual
One-key takeoff/landing
● After the MEW4-1 unlocked, short-press the “ ” button (indicated as below), the aircraft will automatically take off and hover at 1.5m
altitude.
● When the aircraft is flying, short-press the “ ” button (indicated as below), the aircraft will automatically land on the ground.
!Attention: When the aircraft is not inserted with TF card or the TF card is malfunction, photos and videos taking can not
be done by pressing the button of the remote controller, but by the icon on the APP interface.
Photo/Video
Short-press the button indicated as below, the camera icon “ ” on the LCD screen flashes once, the camera takes one photo;
Long-press the same button, the video icon “ ” on the LCD screen flashes slowly, the camera is taking video. Long-press again will exit
shooting.
Gimbal trimmer
The camera angle can be adjusted within a 180 degree range by operating the gimbal trimmer to obtain a better aerial experience. When
scroll up the gimbal trimmer (upward to direction of “A”), the camera will tilt upward to the direction of A; when scroll down the gimbal trimmer
(downward to direction of “B”), the camera will tilt downward to the direction of B.
A
B
-15-

Emergency stop
Press the “ ” button for 3 seconds to stop the flight urgently ONLY when the aircraft encounters emergency, or the aircraft will drop down
or be crashed.
MEW4-1 User Manual
Smart RTH button
● Press the button to start the RTH, the remote controller makes a beep sound and the aircraft will fly back to the recorded Home Point.
● Press the RTH button again to exit RTH procedure and regain control of the aircraft.
● For more information about RTH, please turn to Return to Home section.
Signal strength indicator
Low battery warning
Pic. 1 Pic. 2
● When the battery icon “ ” is shown on the LCD screen (Pic. 1) with steady “beep beep beep...beep beep beep” sound, it means that
the aircraft battery is nearly low voltage. At this time, the aircraft rear light flashes red slowly. The aircraft will perform smart RTH when
the altitude is over 50m or the distance is over 100m.
● When the battery icon “ ” is shown on the LCD screen (Pic. 2) with steady “beep ...beep” sound, it means that the aircraft battery is in
low voltage. At this time, the aircraft rear light flashes red rapidly. The aircraft will return when the altitude is over 15m or the distance is
over 15m; if either the flying altitude or flying distance is less than 15m, the aircraft will land to the ground.
● Signal strength bar “ ” shows the strength of the received signal. The more, the better.
● When the strength bar “ ” changes from weak to strong circularly, it means that the remote controller is under signal connection
status. -16-

● There are 2 situations that the strength bar “ ” is less than 2 grids or no displaying with steady long beep sounds.
1) The distance between the aircraft and the remote controller is too far causing a weak signal.
2) The battery is removed after the aircraft connects to the remote controller.
MEW4-1 User Manual
Optimal transmission zone
Throttle mode switch
Mode 1: The right stick serves as the throttle.
Mode 2: The left stick serves as the throttle.
● The remote controller is set at Mode 2 by default.
Mode 2Mode 1
Throttle Control Stick Mode
To obtain a satisfied flight experience, please make sure that your MEW4-1 is flying ahead of the remote controller and no obstacles
between the aircraft and the remote controller.
Optimal transmission zone
Throttle
control
Forward/
Backward
control
Leftward/
Rightward
flight control
Turn Left/
Right control
Throttle
control
Forward/
Backward
control
Turn Left/
Right control
Leftward/
Rightward
flight control
-17-

How to change throttle mode
MEW4-1 User Manual
①②
Pic. 1 Pic. 2
1. Pull out the mobile phone holder upwards completely (Pic. 1);
2. Tilt the holder 30 degrees towards you and then you will hear a click sound (Pic. 2);
3. Rotate and fix the support board in place (Pic. 3);
4. Adjust the mobile phone holder upward or downward according to the size of your mobile phone (Pic. 4).
Pic. 1 Pic. 2
Pic. 3 Pic. 4
Install the Mobile Phone Holder
!Attention: To change the stick mode of the remote controller, please make sure that the remote controller is under
signal connection status (the indicator light keep flashing). If not, the stick mode could not be changed.
Step 1. Keep pressing the red button “ ” and turn on the remote controller, the remote controller is under signal connection status (Pic. 1);
Step 2. Keep pressing the RTH button “ ” for 3 seconds to choose the throttle control mode (Pic. 2). The throttle control mode will change
according to each press. The mode number is shown on the LCD screen. The throttle control mode is set at mode 2 by default.
-18-