dji Tello User manual

2018.09
v1.4
User Manual

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©2018 Ryze Tech. All Rights Reserved.
Using This Manual
Legend
Warning Important Hints and Tips Reference
Read Before the First Flight
Read the following documents before using the TELLOTM:
1. Tello User Manual*
2. Tello Quick Start Guide
3. Tello Disclaimer and Safety Guidelines
We recommend that you watch all tutorial videos on the ofcial RYZE Tech website https://www.
ryzerobotics.com/tello and read the Tello Disclaimer and Safety Guidelines before you y. Prepare
for your rst ight by reviewing the Tello Quick Start Guide and refer to this Tello User Manual for
more details.
Download the Tello App
Search for “Tello” on the App Store or Google Play or scan the QR code on the right
to download the latest version of the app. The Android version of the Tello app is
compatible with Android v4.4 and later. The iOS version of the Tello app is compatible
with iOS v9.0 and later.
Searching for Keywords
Search for keywords such as “battery” and “install” to find a topic. If you are using Adobe
Acrobat Reader to read this document, press Ctrl+F on Windows or Command+F on Mac to
begin a search.
Navigating to a Topic
View a complete list of topics in the table of contents. Click on a topic to navigate to that
section.
Printing this Document
This document supports high resolution printing.
Units of Measurement
This product is designed and tested using metric units. For user convenience US units are also
provided in this manual. Figures quoted in US units are conversions from metric units. In some
cases they are approximate and they are sometimes rounded to make it easier for users to comply
with safety guidelines. All gures quoted in US units should be taken for reference only.
* Tello user manual applies to all Tello aircrafts, including Tello and Tello Edu aircraft.

©2018 Ryze Tech. All Rights Reserved.
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Contents
Using This Manual 2
Legend 2
Read Before the First Flight 2
Download the Tello App 2
Units of Measurement 2
Product Prole 4
Introduction 4
Aircraft Diagram 4
Aircraft 5
Flight Modes 5
Aircraft Status Indicator 6
Vision Positioning System 7
Intelligent Flight Modes 8
Propellers 12
Propeller Guards 13
Flight Battery 14
Camera 15
Tello App 16
Connecting to the Aircraft 16
Camera View 16
Controlling the Aircraft 17
Flight 20
Flight Environment Requirements 20
Compliance with Regulations 20
Test Flight 20
Firmware Updates 21
Specications 21
After-Sales Information 21

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©2018 Ryze Tech. All Rights Reserved.
Product Prole
Introduction
Tello is a small quadcopter that features a Vision Positioning System and an onboard camera. Using
its Vision Positioning System and advanced ight controller, it can hover in place and is suitable for
ying indoors. Advanced features like Bounce mode, 8D Flips, and EZ Shots make using Tello fun.
Tello captures 5 megapixel photos and streams 720p live video to the Tello app on a mobile device.
Its maximum ight time is approximately 13 minutes*, and its maximum ight distance is 328 ft (100 m).
Failsafe Protection enables Tello to land safely even if you lose connection and its propeller guards
can be used to enhance safety.
Aircraft Diagram
1. Propellers
2. Motors
3. Aircraft Status Indicator
4. Camera
5. Power Button
6. Antennas
7. Vision Positioning System
8. Flight Battery
9. Micro USB Port
10. Propeller Guards
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2
3
4
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7
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* Maximum ight time was tested in windless conditions ying at a consistent 9 mph (15 kph). This value
should be taken for reference only.

©2018 Ryze Tech. All Rights Reserved.
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Aircraft
The Tello contains a ight controller, video downlink system, Vision Positioning System, propulsion
system, and a Flight Battery. Refer to the aircraft diagram in the Product Prole section.
Flight Modes
The Tello can be controlled manually using the virtual joysticks in the Tello app or using a compatible
remote controller. It also has various Intelligent Flight Modes that be used to make Tello perform
maneuvers automatically. In addition, the Tello has a flight mode that it falls back to in certain
circumstances.
The Intelligent Flight Modes are described in detail in the separate Intelligent Flight Modes section.
The Aircraft Status Indicator section describes how the Aircraft Status Indicator provides an
indication of which mode the aircraft is in.
Flying the Tello Manually
The Tello has two ight speeds that you can select when ying the aircraft manually:
• Slow (default): The maximum ight attitude angle is 9° and the maximum ight speed is 6.7 mph
(10.8 kph).
• Fast: The maximum ight attitude angle is 25° and the maximum ight speed is 17.8 mph (28.8 kph).
When flying the Tello manually the aircraft utilizes its Vision Positioning System to automatically
stabilize itself. If the conditions are such that the Vision Positioning System is unavailable the aircraft
automatically changes to Attitude mode.
• To switch from Slow to Fast you must read and agree to the disclaimers and warnings
that appear in the Tello app. Make sure you understand the differences between the two
ight speeds.
• Failsafe Protection automatically initiates landing if the mobile device's signal is weak or
is lost for 50 seconds, or the Tello app crashes.
In the Tello app the ight speed is selected in the settings screen.
Attitude Mode
The aircraft automatically changes to Attitude mode (ATTI mode) when the Vision Positioning
System is unavailable. In Attitude mode the aircraft is not able to position itself and so is easily
affected by its surroundings. Environmental factors such as wind can result in horizontal shifting,
which may present hazards, especially when ying in conned spaces. When the aircraft enters
Attitude mode, land in a safe place as soon as possible to avoid hazards.
The Aircraft Status Indicator blinks yellow slowly when the aircraft is in Attitude mode.

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©2018 Ryze Tech. All Rights Reserved.
Aircraft Status Indicator
The Tello’s Aircraft Status Indicator communicates the statuses of the aircraft’s ight control system
and Flight Battery. The Aircraft Status Indicator is located on the aircraft’s nose, next to the camera,
as shown in the gure below. Refer to the table below for more information about the aircraft states
indicated by the Aircraft Status Indicator.
Aircraft Status Indicator States
Color Pattern Aircraft State
Normal States
Alternating red,
green, and yellow Blinking Turning on and performing self- diagnostic tests
Green Periodically blinks
twice Vision Positioning System active
Yellow Blinking slowly
Vision Positioning System
unavailable, aircraft is in Attitude
mode
Charging States
Blue Solid Charging is complete
Blue Blinking slowly Charging
Blue Blinking quickly Charging error
Warning States
Yellow Blinking quickly Remote control signal lost
Red Blinking slowly Low battery
Red Blinking quickly Critically low battery
Red Solid Critical error

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©2018 Ryze Tech. All Rights Reserved.
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Vision Positioning System
The Vision Positioning System helps the aircraft maintain its current position. With the help of the
Vision Positioning System, the Tello can hover in place more precisely and y indoors or outdoors in
windless conditions. The main components of the Vision Positioning System are a camera and a 3D
infrared module located on the underside of the aircraft.
Vision
Positioning
System
Using the Vision Positioning System
The Vision Positioning System is activated automatically when the aircraft is turned on. No further
action is required. The Vision Positioning System is only effective when the aircraft is at altitudes of
1.0 to 98.4 ft (0.3 to 30 m) and works best at altitudes of 1.0 to 19.7 ft (0.3 to 6 m). If the aircraft is
beyond this range, the Vision Positioning function may be affected, so extra caution is required.
• The performance of the Vision Positioning System is affected by the surface being own
over. The aircraft automatically changes to Attitude mode when the Vision Positioning
System is unavailable. In Attitude mode the aircraft is not able to position itself. Operate
the aircraft with great caution in the following situations, which may cause the aircraft to
enter Attitude mode:
a. Flying at high speed below 2 ft (0.5 m).
b. Flying over monochrome surfaces (e.g. pure black, pure white, pure red, pure green).
c. Flying over highly reective surfaces.
d.Flying over water or transparent surfaces.
e. Flying over moving surfaces or objects.

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©2018 Ryze Tech. All Rights Reserved.
f. Flying in an area where the lighting changes frequently or drastically.
g. Flying over extremely dark (< 10 lux) or bright (> 100,000 lux) surfaces or towards
bright sources of light (e.g. towards sunlight).
h. Flying over surfaces without clear patterns or texture.
i. Flying over surfaces with identical repeating patterns or textures (e.g. tiling).
j. Flying over small and ne objects (e.g. tree branches or power lines).
k. Flying at speeds of over 11 mph (18 kph) at 3.5 ft (1 m) or lower.
• If the aircraft's Vision Positioning system fails for 3 seconds when its ying altitude is
above 20 ft (6 m), Failsafe Protection will automatically initiate landing. If the Vision
Positioning system recovers during landing, Failsafe Protection will shut off and the
aircraft will hover.
• The Vision Positioning System may not be able to recognize patterns on the ground in
very dark (< 100 lux) environments. DO NOT take off if there is a warning prompt in the
Tello app telling you that the environment is too dark.
• Keep the cameras and sensors clean at all times. Dirt or other debris may adversely
affect their effectiveness.
Intelligent Flight Modes
The Tello features Bounce mode, 8D Flips, Throw & Go, Up & Away, and EZ Shots. To use an
intelligent ight mode, ensure that the aircraft’s battery level is at least 50%, tap in the Tello app,
then select a mode.
Bounce Mode
In Bounce mode the aircraft automatically ies up and down between 1.6 and 3.9 ft
(0.5 and 1.2 m) above a at surface. If the aircraft detects an object below it (such
as your hand) it increases its altitude then continues ying up and down.
Using Bounce Mode
1. Press the power button once to turn the aircraft on. Launch the Tello app and
tap to take off.
2. Tap and then select Bounce mode. Read the information prompt and then select Start. The
aircraft will start ying up and down.
3. Extend your arm and place your palm 1 ft (30 cm) or more below the aircraft, keeping your palm
open. The aircraft will increase its altitude then continue ying up and down.
4. Tap in the Tello app any time to exit Bounce mode.
• Ensure there is sufcient space when using Bounce mode. Allow a radius of at least 7 ft (2 m)
horizontally around the aircraft and allow at least 10 ft (3 m) above the aircraft.
• Before using Bounce mode ensure that the Aircraft Status Indicator is periodically blinking
green twice, indicating that the Vision Positioning System is available.
• In Bounce mode, ensure your arm is extended and your palm is at. DO NOT try to
catch the aircraft. The distance between your palm and the aircraft should be at least 1
ft (30 cm).
• Watch out for potential obstacles in your surrounding area (especially on the rear, left, and
right sides of the aircraft) and stay clear of them to avoid accidents.

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• Be prepared to take control of the aircraft by tapping in the Tello app to exit Bounce
mode in case of an emergency.
• Be extra cautious when ying in dark (< 300 lux) or bright (> 10,000 lux) environments.
8D Flips
In 8D Flips the aircraft automatically ips in one of eight different directions.
Using 8D Flips
1. Press the power button once to turn the aircraft on. Launch the Tello app and tap to take off.
2. Tap and then select 8D Flips. Read the information prompt and then select Start.
3. Swipe within the box shown in the app. The aircraft will ip in the direction you swipe.
4. Tap in the Tello app any time to exit 8D Flips.
• Ensure there is sufcient space when using 8D Flips. Allow a radius of at least 7 ft (2 m)
horizontally around the aircraft and allow at least 10 ft (3 m) above the aircraft.
• Before using 8D Flips ensure that the Aircraft Status Indicator is periodically blinking green
twice, indicating that the Vision Positioning System is available.
• When using 8D Flips, the distance between you and the aircraft should be at least 3.5 ft (1 m).
• Watch out for potential obstacles in your surrounding area (especially on the rear, left,
and right sides of the aircraft) and stay clear of them to avoid accidents.
• Be prepared to take control of the aircraft by tapping in the Tello app to exit 8D Flips
in case of an emergency.
• Be extra cautious when ying in dark (< 300 lux) or bright (> 10,000 lux) environments.
Throw & Go
Throw & Go lets you launch the aircraft by gently throwing it into the air.
Using Throw & Go
1. Press the power button once to turn the aircraft on.
2. Tap and then select Throw & Go.

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©2018 Ryze Tech. All Rights Reserved.
3. Place the aircraft in your palm.
4. Read the warning prompt and then tap to start. The propellers will start spinning slowly.
Gently throw the aircraft upward and horizontally away from you, keeping the aircraft horizontal
as you throw it. The propellers will start spinning more quickly and the aircraft will automatically
hover in place. The propellers will stop if you do not throw the aircraft within 5 seconds of the
propellers starting to spin slowly.
• Only use Throw & Go in an open area and make sure that your flight path is clear of
people, animals, and obstacles.
• Throw & Go cannot be used after the aircraft has taken off.
• Be careful when using Throw & Go and make sure you keep your ngers away from the
propellers even when they are spinning slowly.
• Hold the aircraft horizontally, and gently throw the aircraft upward and horizontally away
from you. DO NOT throw the aircraft at a speed that exceeds 6 ft/s (2 m/s). DO NOT throw
the aircraft at an angle to the horizontal greater than 20° and DO NOT ip the aircraft as
you throw it.
• Before using Throw & Go ensure that the Aircraft Status Indicator is periodically blinking
green twice, indicating that the Vision Positioning System is available.
• Watch out for potential obstacles in your surrounding area (especially on the rear, left,
and right sides of the aircraft) and stay clear of them to avoid accidents.
• Be extra cautious when ying in dark (< 300 lux) or bright (> 10,000 lux) environments.
EZ Shots
Using 360
In 360, the aircraft records a short video while rotating 360 degrees.
1. Press the power button once to turn the aircraft on. Launch the Tello app and tap to take off.
2. Tap and then select 360. Read the information prompt and then select Start.
3. The aircraft will rotate 360 degrees and record a video automatically. Tap to access the
video.
4. The aircraft will exit 360 once it has nished recording. You can also tap in the Tello app any
time to exit 360.
• Ensure there is sufcient space when using 360. Allow at least 2 ft (0.5 m) around the
aircraft in all directions.
• Before using 360 ensure that the Aircraft Status Indicator is periodically blinking green
twice, indicating that the Vision Positioning System is available.
• Watch out for potential obstacles in your surrounding area (especially on the rear, left,
and right sides of the aircraft) and stay clear of them to avoid accidents.
• Be prepared to take control of the aircraft by tapping in the Tello app to exit in case of
an emergency.
• Be extra cautious when ying in dark (< 300 lux) or bright (> 10,000 lux) environments.