Zerotech DOBBY User manual

User Manual V1.4
2016.8

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Contents
Legend......................................................................................................................................................... 1
Symbols ................................................................................................................................................1
Reading Suggestions............................................................................................................................ 1
Downloading the App............................................................................................................................ 1
Product Profile............................................................................................................................................ 2
Introduction ...........................................................................................................................................2
Features Highlights............................................................................................................................... 2
Aircraft Diagram.................................................................................................................................... 3
Aircraft......................................................................................................................................................... 5
Aircraft Profile........................................................................................................................................5
On/Off Switch and Power Indicator.......................................................................................................5
Aircraft Status Indicator......................................................................................................................... 5
GPS Positioning....................................................................................................................................6
Optic Flow and Ultrasonic Positioning..................................................................................................6
Flight Data.............................................................................................................................................7
Propeller................................................................................................................................................7
Battery................................................................................................................................................... 9
Using the Battery........................................................................................................................... 9
Checking the Battery Level.......................................................................................................... 10
Charging the Battery.................................................................................................................... 10
Camera................................................................................................................................................12
Micro-USB Port...................................................................................................................................12
Reset Button .......................................................................................................................................12
App............................................................................................................................................................. 14
App Profile...........................................................................................................................................14
App Main Interface.............................................................................................................................. 14
App Settings........................................................................................................................................ 18
Media Library ......................................................................................................................................20
Photos.......................................................................................................................................... 20
Video............................................................................................................................................22
Flying/Shooting........................................................................................................................................ 23
Flight Environment Requirements......................................................................................................23

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Flight Restrictions................................................................................................................................ 24
Preflight Checklist............................................................................................................................... 24
Calibrating the Compass.....................................................................................................................24
Flight Protection..................................................................................................................................25
Connecting theAircraft to Do.Fun.......................................................................................................26
Takeoff/Landing...................................................................................................................................27
Flight Control....................................................................................................................................... 27
Motion Sensing Method............................................................................................................... 27
Swipe Screen Method..................................................................................................................29
Free Sticks Method......................................................................................................................30
Safe Sticks Method...................................................................................................................... 32
Taking Photos/Video Recording.......................................................................................................... 32
Taking Photos.............................................................................................................................. 32
EIS............................................................................................................................................... 33
Conventional Video Recording.................................................................................................... 33
“More Features” .................................................................................................................................. 34
Short Video (Only under Outdoor GPS Positioning)...................................................................34
Target Tracking (Only under Outdoor GPS Positioning)............................................................. 35
Return to Home (Only under Outdoor GPS Positioning) ............................................................36
Somersault................................................................................................................................... 37
Orbit.............................................................................................................................................37
Face Tracking.............................................................................................................................. 37
Voice Control....................................................................................................................................... 37
Appendix Specifications ......................................................................................................................... 39

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Legend
Symbols
Warning
Tips
Reading Suggestions
ZEROTECH has provided the following manuals for DOBBY users:
In the Box
Battery Safety Instructions
Disclaimer
DOBBY Quick Start Guide
DOBBY User Manual
To learn how to use DOBBY, we suggest you read the provided manuals in this order: In the Box,Battery
Safety Instructions, Disclaimer and then DOBBY Quick Start Guide. If you want to learn more, please
read DOBBY User Manual.
Downloading the App
Before using this product, you need to download and install the Do.Fun app. You can scan the following
QR codes, or search for Do.Fun in App Store or Google Play.
Do.Fun supports Android 4.3 and higher versions, iOS 8.0 and higher versions.
iOS
Android

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Product Profile
This section will cover DOBBY’s functional characteristics and the names of DOBBY’s structural
components.
Introduction
DOBBY is a portable and easy-to-use drone for selfie. It consists of the aircraft itself and an
accompanying app.
Through using the app, you can control DOBBY’s flight, take photos and record videos. The app also
allows you to control DOBBY by voice commands, earphones and other methods simply and easily.
Features Highlights
In order to give you a quick and safe selfie experience, DOBBY is equipped with a variety of great
features:
Accompanying App
The app is specifically developed for DOBBY and is really simple to use. It can be used as a remote
controller for flight control and photo & video shooting.
Indoor Flight
DOBBY uses the optic flow and ultrasonic positioning system to support indoor flight. You can also enjoy it
indoor, free of the no-fly zone restrictions
High Definition Photo & Video Shooting
DOBBY is equipped with a professional high definition camera that supports 4208×3120 photo shooting
and 1920×1080 video shooting.
10s Auto-Track Short Video Shooting (“Short Video”for short)
Allowing you to zoom in and out just like in films, the 10s auto-track video shooting turns you into a
director for 10 seconds.
Target Tracking
DOBBY can automatically follow and record video on the target you’ve chosen.
EIS (Electronic Image Stabilisation)

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After EIS, your 4K video footages become 1080p high definition videos. The videos won’t be blurry even if
you’re flying during recording.
Palm Takeoff, Palm Landing
DOBBY can take off from and land safely in the palm of your hand.
Voice Control
You can give voice commands through the app to control DOBBY’s flight and photo & video shooting.
One-Key Sharing
Share your photos & Videos directly with your friends on WeChat, Weibo, Facebook and other social
media websites.
Aircraft Diagram
1. Camera
2. Propeller
3.Arm
4. On/Off Switch, Power Indicator

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5. Reset Key
6. Micro-USB Port
7. Battery
8. Battery Level Switch
9. Battery Level Indicators
10. Optic Flow and Ultrasonic Positioning Module
11. Aircraft Status Indicator

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Aircraft
Aircraft Profile
DOBBY mainly consists of the flight system, the positioning system, the communication system, the
power supply system and the camera system.
This section will explain the functions of each of the parts.
On/Off Switch and Power Indicator
The On/Off Switch has an inbuilt Power Indicator.
Hold the On/Off Switch for 3 seconds. Wait until the Power Indicator starts flashing blue, then remove
your finger and DOBBY will switch on. After a few seconds, DOBBYwill make a noise alerting you that the
ESC has turned on.
After connecting to the app, the Power Indicator will turn solid blue.
Hold the On/Off Switch for 3 seconds. Wait until the blue light of the Power Indicator goes out, then
remove your finger and DOBBY will switch off.
Aircraft Status Indicator
On the tail of the aircraft, there’s an RGB indicator that shows the status of DOBBY. The Aircraft Status
Indicator’s status and the corresponding meanings are as follows:
Indicator
Colour
Meaning
Normal Status
Solid Blue
GPS Positioning
Slow Blue Flashing
Optic Flow and Ultrasonic Positioning
Warning and Abnormal Status
Fast Green Flashing
GPS Failure
Fast Yellow and Green Flashing
Ultrasonic Failure
Fast Yellow and Red Flashing
Optic Flow Failure
Slow Yellow Flashing
No-Fly Zone Warning
Fast Red Flashing
Low Battery Warning

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Solid Red
Critical Battery Warning
Fast Purple Flashing
Compass Failure
Assistant Prompts
Solid Green
Horizontal Compass Calibration
Solid White
Vertical Compass Calibration
GPS Positioning
DOBBY uses a GPS&GLONASS dual-mode satellite positioning system. The satellite positioning system is
GPS based, with GLONASS acting as a supplementary system.
During outdoor flight, DOBBY uses GPS positioning when the number of searched-out GPS satellites≥8.
Optic Flow and Ultrasonic Positioning
DOBBY will use the optic flow and ultrasonic positioning during indoor flight. If the GPS signal is weak (the
number of searched-out GPS satellites<8) during outdoor flight, the aircraft will automatically use optic
flow and ultrasonic positioning for supplement.
The optic flow and ultrasonic positioning system combines dynamic image analysis to horizontally
position the aircraft during flight and ultrasonic distance measurement to determine the distance from the
ground. It positions the aircraft during indoor flight and assists the GPS positioning system during outdoor
flight.
The optic flow and ultrasonic positioning module is located on the base of the aircraft. It consists of an
optic flow camera and an ultrasonic sensor.
Usage Conditions and Restrictions
The optic flow and ultrasonic positioning system is used for indoor flight. It is also used for outdoor flight if
the GPS signal is weak. The operating height range for this positioning system is 0.5-3m.
When using this positioning system, after the aircraft has taken off and ascended to 0.5m, it will determine
if the requirements for using this system have been met. If they have not, it will initiate landing. If the
requirements are not met for this system during flight, the aircraft will also initiate landing.
Requirements for the optic flow and ultrasonic positioning system: When using this system, the area
underneath the aircraft needs to have a clear textured surface that is not too sparse or too dense. Users
can put a textured carpet or cloth on the ground, table or any large, horizontal surface to provide the
required textured surface.

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The optic flow and ultrasonic positioning system may not work under these circumstances,
please use with caution:
Above highly reflective surfaces;
Above water or transparent objects;
Above people or moving objects;
In areas with rapidly changing/flashing lights;
Above very bright or very dark surfaces;
Above objects that easily absorb ultrasonic waves;
Above surfaces without clear textures or with too sparse or too dense textures;
During fast flight at low levels (0.5m or less), the optic flow and ultrasonic positioning
system may not work.
Ensure that the lens of the optic flow camera is clear.
Because the ultrasonic positioning system may be disturbed by ultrasonic waves
emitted by other ultrasonic equipment, please do not use DOBBY near other ultrasonic
equipment, including other drones.
The Ultrasonic Sensor will emit ultrasonic waves that are inaudible to humans but may
make some animals nervous. Please do not use DOBBY close to animals.
Flight Data
DOBBY will begin to record flight data from the moment you turn it on. It will stop recording the data once
the power source is turned off. The name of the file will be the time when the data was recorded.
When you use the fault report function in the app, flight data will be automatically uploaded to the server,
so as to help with fault diagnosis.
Propeller
DOBBY has 4 sets of 3-inch foldable Propellers. The propeller blades are already mounted; users only
need to expand the Arms before flight. When you’re done flying, fold the Arms and the blades into the
base of the aircraft to prevent damaging them.
The blades have either “A”or “B”on the top to indicate in which direction they spin, as shown in the
following figure: