LEGO Mindstorms EV3 User manual

User Guide

Table of
ConTenTs
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Useful Information
+Sound File List ........................................................................................................ 46
+Image File List ........................................................................................................ 51
+Brick Program App—Assets List ............................................................. 55
+Element List .............................................................................................................. 56
Introduction
+Welcome ...................................................................................................................... 3
EV3 Technology
+Overview ..................................................................................................................... 4
+EV3 Brick ..................................................................................................................... 5
Overview ...................................................................................................................... 5
Installing Batteries ............................................................................................... 8
Turning On the EV3 Brick ................................................................................ 9
+EV3 Motors ................................................................................................................. 10
Large Motor ............................................................................................................... 10
Medium Motor ......................................................................................................... 10
+EV3 Sensors ............................................................................................................. 11
Color Sensor ............................................................................................................. 11
Touch Sensor ........................................................................................................... 12
Infrared Sensor ....................................................................................................... 13
Remote Infrared Beacon ................................................................................. 13
+Connecting the EV3 Technology .............................................................. 15
Connecting Sensors and Motors ............................................................. 15
Connecting the EV3 Brick to Your Computer .................................. 16
+EV3 Brick Interface ............................................................................................. 21
Run Recent ................................................................................................................ 21
File Navigation ......................................................................................................... 21
Brick Apps .................................................................................................................. 22
Settings ......................................................................................................................... 26
EV3 Software
+Minimum System Requirements ............................................................. 30
+Installing the Software ..................................................................................... 30
+Lobby ............................................................................................................................. 31
+Project Properties and Structure ............................................................ 32
+Robot Missions ....................................................................................................... 34
+Programming ........................................................................................................... 35
+Hardware Page ...................................................................................................... 38
+Content Editor ......................................................................................................... 40
+Tools ................................................................................................................................ 41
Troubleshooting
+EV3 Software Help .............................................................................................. 43
+Software Updates ................................................................................................ 43
+Firmware Update .................................................................................................. 44
+Resetting the EV3 Brick .................................................................................. 45

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IntroductIon
Welcome to the world of LEGO®MINDSTORMS®
In this LEGO®MINDSTORMS®EV3 robotics set you have all
theelements you need to create and command thousands of LEGO
robots.
If you have never built a LEGO MINDSTORMS robot before, we
recommend that you start by building one of the five cool robot
characters pictured on the EV3 packaging. In the Robot Missions
inside the EV3 programming software, you’ll find building instructions
and examples of how to program these robots. The robots have been
created by LEGO MINDSTORMS designers to demonstrate some of
the ways you can build and program with the LEGO MINDSTORMS
EV3 robotics system. Before you know it, you’ll turn your own LEGO
creations into live robots of every type and with many different kinds
of behavior!
With LEGO MINDSTORMS EV3, building and programming your
own robot has never been easier. Think of a robot and then build
it. Use the motors and sensors to add behavior and movement.
Thesoftware will guide you in bringing your robot to life.
Create: Build your robot using the LEGO elements, motors, and
intelligent sensors included in the set.
Command: Program your robot in the intuitive icon-based
programming interface. Drag and drop the actions that you want
into the programming window and adjust them to suit your robot’s
behavior.
Go! Once you have built and programmed your robot, it’s time to
play!
Visit LEGO.com/mindstorms to see what’s new and what others are
doing with their LEGO MINDSTORMS set. When you and other LEGO
MINDSTORMS fans share your creations and your experiences, we
all benefit.
See you there!
Welcome

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EV3
TEchnology
Overview
Touch Sensor
+Recognizes three
conditions: touched,
bumped, and released.
EV3 Brick
+Serves as the control center
and power station for your
robot.
Remote Infrared Beacon
+Remote controls your robot
from a distance.
Large Motor
+Lets you program
precise and powerful
robotic action.
Medium Motor
+Maintains precision, while
trading some power for
compact size and faster
response.
Color Sensor
+Recognizes seven different
colors and measures light
intensity.
Infrared Sensor
+Detects objects and can
track and find the Remote
Infrared Beacon.




 
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EV3
TEchnology
EV3 Brick
Overview
The Display shows you what is going on inside the EV3 Brick and
enables you to use the Brick Interface. It also allows you to add
text and numerical or graphic responses into your programming or
experiments. For example, you might want to program the Display
to show a happy face (or a sad face) for a comparison response or
to display a number that is the result of a mathematical calculation
(learn more about using the Display Block in the EV3 Software Help).
The Brick Buttons allow you to navigate inside the EV3 Brick
Interface. They can also be used as programmable activators. For
example, you might program a robot to raise its arms if the Up button
is pressed or to lower them if the Down button is pressed (for more
information, see Using the Brick Buttons in the EV3 Software Help).
Wireless Connection
Status Icons
(from the left):
Bluetooth enabled but not
connected or visible to other
Bluetooth devices
Bluetooth enabled and visible
to other Bluetooth devices
Bluetooth enabled and your
EV3 Brick is connected to
another Bluetooth device
Bluetooth enabled and visible
and your EV3 Brick is connected
to another Bluetooth device
Wi-Fi enabled but not connected
to a network
Wi-Fi enabled and connected
to a network
Battery level
USB connection established
to another device
Brick Buttons
 Back
This button is used to reverse
actions, to abort a running
program, and to shut down
theEV3 Brick.
 Center
Pressing the Center button says
“OK” to various questions—to shut
down, to select desired settings,
or to select blocks in theBrick
Program App. You would, for
example, press this button to
select a checkbox.
 Left, Right, Up, Down
These four buttons are used to
navigate through the contents of
the EV3 Brick.
Brick Name

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EV3
TEchnology
The Brick Status Light that surrounds the Brick Buttons tells you
the current status of the EV3 Brick. It can be green, orange, or red,
and can pulse. Brick Status Light codes are the following:
+Red = Startup, Updating, Shutdown
+Red pulsing = Busy
+Orange = Alert, Ready
+Orange pulsing = Alert, Running
+Green = Ready
+Green pulsing = Running program
You can also program the Brick Status Light to show different colors
and to pulse when different conditions are met (learn more about
using the Brick Status Light Block in the EV3 Software Help).
EV3 Brick
Technical
Specifications
for the EV3 Brick
+Operating System—LINUX
+300 MHz ARM9 Controller
+Flash Memory—16 MB
+RAM—64 MB
+Brick Screen Resolution—178x128/Black & White
+USB 2.0 Communication to Host PC—Up to 480 Mbit/sec
+USB 1.1 Host Communication—Up to 12 Mbit/sec
+Micro SD Card—Supports SDHC, Version 2.0, Max
32 GB
+Motor and Sensor Ports
+Connectors—RJ12
+Support Auto ID
+Power—6 AA batteries
Brick Status Light – Red Brick Status Light – Orange Brick Status Light – Green

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EV3
TEchnology
Input Ports
Input Ports 1, 2, 3, and 4 are
used to connect sensors to
theEV3 Brick.
PC Port
The Mini-USB PC Port, located
next to the D port, is used
to connect theEV3 Brick to
acomputer.
Output Ports
Output Ports A, B, C, and D
are used to connect motors to
the EV3 Brick.
Speaker
All sounds from the EV3 Brick
come through this speaker—
including any sound effects used
in programming your robots.
When the quality of the sound
is important to you, try to leave
the speaker uncovered while
designing your robot.
Check out the cool sound files
that can be programmed with
in the EV3 Software (learn more
about using the Sound Block in
the EV3 Software Help).
SD Card Port
The SD Card Port increases
theavailable memory for your
EV3 Brick with an SD card
(maximum 32 GB—not included).
USB Host Port
The USB Host Port can be used
to add a USB Wi-Fi dongle for
connecting to a wireless network,
or to connect up to four EV3
Bricks together (daisy chain).
EV3 Brick

AA, 1.5V x 6




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EV3
TEchnology
EV3 Brick
Installing Batteries
in the EV3 Brick
The EV3 Brick requires six AA/LR6 batteries. Alkaline or rechargeable
Lithium Ion AA batteries are recommended.
To install the AA batteries, remove the battery cover on the back of
the EV3 Brick by pressing the two plastic tabs on the side. After you
have inserted the six AA batteries, attach the battery cover again.
Some important information about batteries:
+Never use different kinds of batteries together
(including mixing old and new).
+Remove batteries from the EV3 Brick when not in use.
+Never use damaged batteries.
+Use the correct battery charger under the supervision of
an adult.
+Never attempt to recharge batteries that are not rechargeable.
Note: If your batteries are weak, the Brick Status Light may stay red
after you press the Start button, while the Display continues to say
“Starting.”
Power-Saving Practices
+Remove the batteries between use.
Remember to keep each set of batteries in its own storage
container so they can be used together.
+Reduce the volume.
+Adjust the Sleep Setting.
+Turn off Bluetooth and Wi-Fi when not in use.
+Avoid unnecessary wear on the motors.
Low Battery Power Indicator

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EV3
TEchnology
Turning On the EV3 Brick
To turn on the EV3 Brick, press the Center button. After you press
thebutton, the Brick Status Light will turn red and the Starting screen
will be displayed.
When the light changes to green, your EV3 Brick is ready.
To turn the EV3 Brick off, press the Back button until you see theShut
Down screen.
The Abort X will already be selected. Use the Right button to select
the Accept check mark, then press the Center button for OK. Your
EV3 Brick is now turned off. If you press OK while the X is selected,
you will return to the Run Recent screen.
EV3 Brick
Starting screen
Shut Down screen

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EV3
TEchnology
EV3 Motors
Large Motor
The Large Motor is a powerful“smart” motor. It has a built-in Rotation
Sensor with 1-degree resolution for precise control. The Large Motor
is optimized to be the driving base on your robots.
By using the Move Steering or Move Tank programming block
in theEV3 Software, the Large Motors will coordinate the action
simultaneously.
Medium Motor
The Medium Motor also includes a built-in Rotation Sensor (with
1-degree resolution), but it is smaller and lighter than the Large
Motor. That means it is able to respond more quickly than the Large
Motor.
The Medium Motor can be programmed to turn on or off, control its
power level, or to run for a specified amount of time or rotations.
Compare the Two Motors:
+The Large Motor runs at 160–170 rpm, with a running torque of
20 Ncm and a stall torque of 40 Ncm (slower, but stronger).
+The Medium Motor runs at 240–250 rpm, with a running torque
of 8 Ncm and a stall torque of 12 Ncm (faster, but less powerful).
+Both motors are Auto ID supported.
For more information on using the Rotation Sensor in your
programming, see Using the Motor Rotation Sensor in the EV3
Software Help.
Large Motor
Medium Motor

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EV3
TEchnology
Color Sensor
The Color Sensor is a digital sensor that can detect the color
or intensity of light that enters the small window on the face of
thesensor.This sensor can be used in three different modes: Color
Mode, Reflected Light Intensity Mode, and Ambient Light Intensity
Mode.
In Color Mode, the Color Sensor recognizes seven colors—black,
blue, green, yellow, red, white, and brown—plus No Color. This
ability to differentiate between colors means your robot might be
programmed to sort colored balls or blocks, speak the names of
colors as they are detected, or stop action when it sees red.
In Reflected Light Intensity Mode, the Color Sensor measures
theintensity of light reflected back from a red light–emitting lamp.
The sensor uses a scale of 0 (very dark) to 100 (very light). This
means your robot might be programmed to move around on a white
surface until a black line is detected, or to interpret a color-coded
identification card.
In Ambient Light Intensity Mode, the Color Sensor measures
thestrength of light that enters the window from its environment,
such as sunlight or the beam of a flashlight. The sensor uses a scale
of 0 (very dark) to 100 (very light). This means your robot might be
programmed to set off an alarm when the sun rises in the morning,
or stop action if the lights go out.
The sample rate of the Color Sensor is 1 kHz/sec.
For the best accuracy, when in Color Mode or Reflected Light
Intensity Mode, the sensor must be held at a right angle, close
to—but not touching—the surface it is examining.
For more information, see Using the Color Sensor in the EV3
Software Help.
EV3 Sensors
Color Mode
Reflected Light Intensity Mode
Ambient Light Intensity Mode
Color Sensor

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EV3
TEchnology
Touch Sensor
The Touch Sensor is an analog sensor that can detect when
thesensor’s red button has been pressed and when it is released.
That means the Touch Sensor can be programmed to action using
three conditions—pressed, released, or bumped (both pressed and
released).
Using input from the Touch Sensor, a robot can be programmed
to see the world as a blind person might, reaching a hand out and
responding when it touches something (pressed).
You might build a robot with a Touch Sensor pressed against
thesurface beneath it. You might then program the robot to respond
(Stop!) when it is about to drive off the edge of a table (when
thesensor is released).
A fighting robot might be programmed to keep pushing forward
against its challenger until the challenger retreats. That pair of
actions—pressed, then released—would constitute bumped.
For more information, see Using the Touch Sensor in the EV3
Software Help.
EV3 Sensors
Touch Sensor
Released
Bumped
Pressed

70cm / 27inch
200cm / 79inch
70cm / 27inch
200cm / 79inch
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EV3
TEchnology
Infrared Sensor and
Remote Infrared Beacon
The Infrared Sensor is a digital sensor that can detect infrared light
reflected from solid objects. It can also detect infrared light signals
sent from the Remote Infrared Beacon.
The Infrared Sensor can be used in three different modes: Proximity
Mode, Beacon Mode, and Remote Mode.
Proximity Mode
In Proximity Mode, the Infrared Sensor uses the light waves reflected
back from an object to estimate the distance between the sensor
and that object. It reports the distance using values between 0 (very
close) to 100 (far away), not as a specific number of centimeters or
inches.The sensor can detect objects up to 70 cm away, depending
on the size and shape of the object.
For more information, see Using the Infrared Sensor Proximity Mode
in the EV3 Help files.
Beacon Mode
Choose one of the Remote Infrared Beacon’s four channels from
the red Channel Selector. The Infrared Sensor will detect a beacon
signal matching the channel that you specify in your program up
to a distance of approximately 200 cm in the direction it is facing.
Once detected, the sensor can estimate the general direction
(heading) of and the distance (proximity) to the beacon. With this
information, you can program a robot to play hide-and-seek, using
the Remote Infrared Beacon as the target of its search.Theheading
will be a value of between -25 and 25, with 0 indicating that
thebeacon is directly in front of the Infrared Sensor. The proximity
will be values between 0 and 100.
For more information, see Using the Infrared Sensor Beacon Mode
in the EV3 Help files.
EV3 Sensors
Proximity Mode
Beacon Mode
Infrared Sensor

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EV3
TEchnology
The Remote Infrared Beacon is a separate device that can be
handheld or built into another LEGO
®
model. It requires two AAA
alkaline batteries. To turn the Remote Infrared Beacon on, press
the big Beacon Mode button on the top of the device. A green LED
Indicator will turn on, indicating the device is active and transmitting
continuously. Another press on the Beacon Mode button will turn
it off (after one hour of inactivity, the beacon will automatically turn
itself off).
Remote Mode
You can also use the Remote Infrared Beacon as a remote control
for your robot. When in Remote Mode, the Infrared Sensor can detect
which button (or combination of buttons) on the beacon is pressed.
There are a total of eleven possible button combinations:
 = No button (and Beacon Mode is off)
 = Button 1
 = Button 2
 = Button 3
 = Button 4
 = Both Button 1 and Button 3
 = Both Button 1 and Button 4
 = Both Button 2 and Button 3
 = Both Button 2 and Button 4
 = Beacon Mode is on
 = Both Button 1 and Button 2
 = Both Button 3 and Button 4
For more information, see Using the Infrared Sensor Remote Mode
in the EV3 Help files.
EV3 Sensors
Remote Mode
Remote Infrared
Beacon

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EV3
TEchnology
Connecting Sensors and Motors
In order to function, motors and sensors must be connected to
theEV3 Brick.
Using the flat black Connector Cables, link sensors to the EV3 Brick
using Input Ports 1, 2, 3, and 4.
If you create programs while the EV3 Brick is not connected to your
computer, the software will assign sensors to default ports. Those
default port assignments are:
+Port 1: Touch Sensor
+Port 2: No sensor
+Port 3: Color Sensor
+Port 4: Infrared Sensor
If the EV3 Brick is connected to your computer while you program,
the software will automatically identify which port is being used for
each sensor or motor.
Using the flat black Connector Cables, link motors to the EV3 Brick
using Output Ports A, B, C, and D.
As with the sensors, if the EV3 Brick is not connected when you are
writing a program, each motor will be assigned to a default port.
Default port assignments are:
+Port A: Medium Motor
+Port B and C: Two Large Motors
+Port D: Large Motor
If the EV3 Brick is connected to the computer when you are
programming, the software will automatically assign the correct
port in your programs.
Connecting the EV3 Technology
Connecting Sensors
Connecting Motors
NOTE:
The software cannot
distinguish between two or
more identical sensors
or motors.

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EV3
TEchnology
Connecting the EV3 Brick to
Your Computer
Connect the EV3 Brick to your computer by USB Cable or wirelessly
using either Bluetooth or Wi-Fi.
USB Cable
Using the USB Cable, plug the Mini-USB end into the EV3 Brick’s PC
Port (located next to Port D). Plug the USB end into your computer.
USB Cable connection
Connecting the EV3 Technology

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LEGOtheLEGOlogoMINDSTORMSandtheMINDSTORMSlogoaretrademarksofthe/
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EV3
TEchnology
Wireless—Bluetooth
If your computer is not Bluetooth enabled, you will need a Bluetooth
USB dongle for your computer.
Making a Bluetooth Connection to the Computer
Before you can make a Bluetooth connection between the EV3
Brick and the computer running the EV3 Software, you will need to
enable Bluetooth on the EV3 Brick. Directions for this can be found
on page 27.
Once you have enabled Bluetooth on the EV3 Brick, it can now be
connected to the computer and EV3 Software.
 First, confirm that the EV3 Brick is turned on.
 Open a new or existing program in the EV3 Software
(see theEV3 Software chapter on page 31 for directions
on how to do this).
 Go to the Hardware Page at the lower right of the screen—
expand thewindow if collapsed (learn more about
theHardware Page on page 38).
 Click on the Available Bricks tab. If your EV3 Brick is not
already listed, click the Refresh button to locate the EV3 Brick
and check the Bluetooth box that will appear.
 Accept the connection on your EV3 Brick manually,
then enter the passkey and press the Center button for OK.
The default is 1234. Repeat this in the EV3 Software.
 The connection is now established and a “<>” symbol
is shown on the top left of the EV3 Brick Display
(next to the Bluetooth icon) to confirm the connection.
To disconnect the EV3 Brick from the computer, click on
theDisconnect button next to the Refresh button in the Hardware
Page.
More information about Bluetooth settings on the EV3 Brick can be
found on page 27.
Wireless connection
Connecting the EV3 Technology

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LEGOtheLEGOlogoMINDSTORMSandtheMINDSTORMSlogoaretrademarksofthe/
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EV3
TEchnology
NOTE:
The EV3 Brick only
supports the following
network encryption
modes: None and
WPA2.
Wireless—Wi-Fi
Your first step in connecting to Wi-Fi is to acquire a Wi-Fi USB
dongle. For a list of compatible dongles, go to the official LEGO
®
MINDSTORMS®website (www. LEGO.com/mindstorms).
To begin the setup, you must have access to a wireless network,
and know the network’s name and its password.
If the EV3 Software is open, close it and insert your Wi-Fi dongle
into the EV3 Brick using the USB Host Port.
Before you can connect the EV3 Brick to a network, you will need
to enable Wi-Fi on the EV3 Brick. Directions for this can be found
on page 29.
Settings screen
Connecting the EV3 Technology
NOTE:
Because of keyboard
limitations, the password for
the network must be made up
of numbers, capital letters, and
lowercase letters. You will not be
able to use some symbols, such
as the # sign, or letters and
symbols from non-Latin
alphabets.

p. 19
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LEGOtheLEGOlogoMINDSTORMSandtheMINDSTORMSlogoaretrademarksofthe/
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EV3
TEchnology
Connecting the EV3 Brick to a network
After selecting Wi-Fi on the Settings screen, use the Up and Down
buttons to select Connections and press the Center button for OK.
The EV3 Brick will now search for and list available Wi-Fi networks.
Using the Up and Down buttons for navigation, find your network on
the list. If the EV3 Brick is not already connected to your network
(indicated by a check mark), select your network using the Center
button.
In the Network dialog box that appears, select Connect and press OK
with the Center button.You will now be asked to enter the encryption
type and the network password using the Left, Right, Up, and Down
buttons to navigate (upper and lower cases do matter here).
Once you have entered the correct password, press the check mark
for OK. You will now be connected to the network.
If the EV3 Brick does not find your network in its search, the network
may be hidden.To connect to a hidden network, select “Add hidden.”
You will then be asked to enter the name, encryption type, and
password for the hidden network you wish to add (upper and
lower cases do matter here). Once done, the EV3 Brick will be
connected to the hidden network and the network will be included
in thenetwork list.
NOTE:
Once you have
connected to a network
using its password, the EV3
Brick will remember the password
for future connections. Known
networks are indicated in
the list with an asterisk
“*” symbol.
Network list Connect to network
Network password Add hidden network
Connecting the EV3 Technology

p. 20
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LEGOtheLEGOlogoMINDSTORMSandtheMINDSTORMSlogoaretrademarksofthe/
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EV3
TEchnology
Making a Wi-Fi Connection from the Computer to the EV3 Brick
Using the USB Cable, connect the EV3 Brick to the computer.
Open an EV3 Software program. Access the Wireless Setup tool in
the Hardware Window (at the bottom right of the screen), or select
Wireless Setup from the Tools Menu.
The computer will display which networks it detects.
Select the network you want to connect to and click on “Connect” to
configure the connection.To add a network that is not broadcasting
its Network Name (SSID), click “Add.”
To edit the settings of a previously configured network, click Edit.
Click OK to establish a Wi-Fi connection. Once the connection is
established, you can unplug the USB Cable.
Wireless Setup tool
Connecting the EV3 Technology