EV3 is the current generation of LEGO MINDSTORMS, released in 2013.

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Is there a changelog for any firmware updates on an EV3 brick?

When a firmware update is released for the Mindstorms EV3 brick, are there usually any changelogs for them explaining what's been added or changed? If so, where can they be found?
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1answer
52 views

EV3 won't connect through bluetooth anymore

I was using VS2015 (C#) to write simple programs for my EV3 using a bluetooth connection. This was working fine for several days and then suddenly stopped. I can't for the life of me figure out why. ...
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2answers
311 views

Issues connecting the EV3 on Windows 8.1 64bit

I have got a computer with Windows 8.1 64 bit and I have installed LEGO Mindstorms EV3 software Home edition and tried to connect the EV3 brick to the computer, but the brick didn´t connect to the ...
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1answer
37 views

Understanding the makeup of an XML .ev3p file

When you unzip an .ev3 program, there are many txt and xml files that are inside. In particular, there is an xml file produced with the filename extension .ev3p, which seems to contain program ...
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3answers
866 views

IDE recommendations for EV3 programming

Does anybody have any recommendations for non-GUI programming of the EV3 unit? I'm impressed by the LabVIEW software, but as a professional C# and VB.Net programmer (with C, C++ experience), I find ...
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1answer
48 views

Controlling EV3 motors within VC++

I've got an application within some VC++ software (BCI2000). This is running on Windows 7. Although BCI2000 can run elsewhere, I'd like to stay on Windows. I've got an EV3 whose motors I'd like to ...
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2answers
404 views

Programming with Lego Mindstorms EV3

I know this question was asked in the past, but I want an up-to-date answer. What is the best way to program with the NXT with a oriented object programming language? Ideally C#, C++ or Java (maybe ...
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4answers
3k views

Direct control of EV3

I need to control a car with an EV3 brick. I want to control it remotely. The trouble is, I'm using an education set so I don't have the remote. What means of controlling it remotely could I use? I ...
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3answers
2k views

Programming Mindstorms on a chromebook

I know there is no official way to program NXT/EV3 on a Chromebook. But a Chromebook can have Ubuntu installed via Crouton in developer mode. So, is there a relatively painless way to program NXT/...
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3answers
1k views

What is known of the capacities of the MINDSTORMS EV3 when it comes to interconnection with a network (WiFi, bluetooth)

What is known of the new MINDSTORMS EV3 capabilities when it comes to netwoked functions. What type of interface can be plugged to interact with a PC or portable device (smartphone/tablet)? In term ...
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2answers
205 views

EV3 brick freeze during run big program

EV3 brick sometimes freezes while executing huge programs and do not react on buttons and bluetooth (connect, start/stop program). Only way to continue work is hard reset. We discovered that freeze ...
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3answers
3k views

Is there a free EV3 simulator (virtual machine) for the Mac OS?

I recently saw this question on a virtual EV3 machine. From the video, I felt that this software will be great. However, I don't have the budget needed to buy a licence. Is there any alternative to ...
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3answers
141 views

Made a big program in EV3's programming software for AI creation and it went from slow to not loading

Made a big program in EV3's programming software for AI creation and it went from slow to not loading. It just displays the loading bar in the middle of the page. Even my lenovo windows 10 8GB RAM ...
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0answers
30 views

How do you get LEGO Education EV3 Software? [duplicate]

Does anyone know how to get it? I have a rough feeling that you get it by purchasing the product? Please help.
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0answers
28 views

Lego Mindstorms EV3 Software

I have come across a bug where my computer just wont accept the software I tried using a usb after the first THREE tries to download it but that didnt even work. Does anyone have the same problem or ...
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2answers
72 views

EV3 screen stuck at “Starting…”

After I turn the device on, its screen is stuck at "starting..." for a long time. It hasn't change into the regular screen, and the light behind the button was still red (didn't become green). Is ...
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0answers
53 views

Sending Gcode to Lego mindstorms x/y plotter?

I am building an x/y plotter out of LEGO Mindstorms. I would like it to read an SVG file on the EV3 brick, convert it to gcode, and draw the coordinates. How would I go about doing this?
4
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1answer
56 views

System files deleted somehow

I think my son accidentally deleted all the system sound/image files, etc. I have tried loading the firmware but that does NOT restore the files. Is there not a way to just upload the system sound and ...
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3answers
3k views

EV3 Education Edition software license

I got a new EV3 education kit. Can I install it on a several computers or does the license work on one computer only?
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2answers
549 views
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2answers
87 views

Is it possible to access the RGB values of the EV3 Light Sensor?

I'm following a line with the LEGO EV3 Color Sensor in Reflected-light mode, I need to stop the robot when it detects a green tile in the ground, but I didn't succeeded in differentiating Green and ...
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1answer
49 views

How to parameter the ports in move tank block EV3?

How do I parameter the ports at Move Tank block (in My Block)?
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1answer
626 views

Pass sensor or motor port number as a parameter

I want to create a block for one light sensor or one motor separately. Is it possible to give the number of the port as a parameter to a sensor or motor block via data wire? In NXT-G it was possible.
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1answer
53 views

EV3 software crashes on Windows 8 laptop

My cousin has Windows 8 x64 netbook laptop. When he tries to start the application he gets .NET framework error and I can see following text in the log file: +000,016 >> MINDSTORMS EV3 launched ...
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1answer
57 views

EV3 Installation failure on OSX El Capitan 10.11.3

Hi This is the first time I've tried to use EV3 software since upgrading to El Capitan. Before then, it worked perfectly. When I tried to launch the application a message pops up saying it has ...
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4answers
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What is different between the EV3 Home and Educational sets?

The newly announced LEGO Mindstorms EV3 sets for home and education have some differences, but it isn't clear to me what they are, specifically. It seems that have different sensors, perhaps ...
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5answers
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Does the Mindstorms EV3 software run on OS X El Capitan?

El Capitan was released a few days ago, and I want to upgrade. Will there be issues with the software, or will it run nicely on El Capitan? My Mac: Retina MacBook Pro 13", Early 2015
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1answer
95 views

Lego Color Sensor - EV3

My son is using his EV3 with a color sensor. He is using the sensor to test the reflectivity of different materials. Can you please tell me what the letters "PCT" stand for?
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183 views

EV3 IR, ultrasonic senosor datasheets

I want to connect EV3 IR and ultrasonic sensors to my Arduino. Unfortunately could not find any good documents describing how to use/control them. Could you please help? Thank you very much.
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1answer
159 views

Tufts MAZE LabView Program Will Not Run on EV3

Through the 2012 LabVIEW for LEGO software package, I found an example of a maze from Tufts. I cannot get it to run on an EV3. It appears to just constantly execute the initialization. How can I ...
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1answer
100 views

How to fix the Gyro

Currently the gyro sensor connected to the EV3 brick doesn't really work. whenever the gyro is attempted to be used the robot will just sit and spin once it gets to where it needs to use the gyro. Any ...
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1answer
60 views

Why does display output affects motors?

I'm making a simple program with LEGO EV3 Education. It makes a little tank to follow a black line over a white-ish floor. Here it is: [] This works very smooth: it makes the tank follow the EDGE ...
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3answers
3k views

Is it possible to edit a my block input parameter value?

I have created my blocks but want to change the input parameter to a negative. Is this possible or must all the myblocks be re-written?
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3answers
1k views

Mindstorms crashes when connecting to EV3 with Bluetooth

I am using OS X 10.10 (Yosemite) on a 2011 MacBook Air, LEGO Mindstorms EV3 Home Edition v1.0 and the latest firmware on the EV3 (v1.06H) When I attempt to pair the EV3 with my Mac over Bluetooth, ...
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58 views

How to determine orientation of a EV3 gripper?

I have built the EV3 Gripper using the manual. I am programming an ev3 brick using ev3dev. I need to determine the angle/direction/orientation of the robot programmatically, before I can issue a ...
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3answers
2k views

EV3 Brick Error Symbols?

I am currently developing an EV3 robot that sorts colored technic beams. However, the brick will only run part of the program and then generate a strange error code on the brick's screen. The error ...
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1answer
1k views

Lego Mindstorms EV3 crashes on OS X El Capitan

I get the following problem details, can anyone help me? Process: MindstormsEV3 [595] Path: /Applications/LEGO MINDSTORMS EV3 Home Edition.app/Contents/MacOS/...
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1answer
85 views

Loop not work, always enter in the same condition

I have a loop but always enter in the same condition, please see the picture.
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0answers
30 views

HiTechnic Color Sensor analog

HiTechnic sales support said that HiTechnic color sensor hasn't been manifactured yet. Currently it's out of stock in HiTechnic shop. Is there any analog of this sensor except NXT/EV3 color sensors?
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55 views

Infrared sensor behavior

I'm developing a small program with the LEGO's Ev3 development tool. I'm trying to make the robot rotate, 30° at time, and check if the infrared sensor detect something than make something and stop. ...
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2answers
116 views

How to store a matrix of values and pick out certain elements and compute the difference?

I at the moment am trying to make an EV3 robot which is capable of following a gradient decent method. The idea was to store a discretized function in a 2D matrix, and make several lookups in that 2D ...
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5answers
10k views

Where can I download the EV3 education edition software for free?

I have a site license but I'm not able to find the download for the software anywhere. Any help would be greatly appreciated.
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1answer
39 views

Can I change the spec of a MyBlock [duplicate]

If I create my own block (MyBlock) with one param and later discover that I should have used 2 params or different icon or something like that, what do I do? Is it possible to change the existing ...
1
vote
1answer
109 views

Education EV3 Software Site Licence - installation on teachers computers?

WE've recently purchased some mindstorms ev3 education sets plus the site licence of the Software. in Switzerland many teachers do their preparations at home, so my question is, am I allowed to ...
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3answers
352 views

Reading current motor speed, opOutput_Read

I'm trying to read current motor speed using direct command: Instruction opOutput_Read (LAYER, NO, *SPEED, *TACHO) Opcode 0xA8 Arguments (Data8) LAYER – Specify chain ...
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1answer
45 views

DNX on Lego Mindstorms

I am not familiar with ARM development but I am wondering would it be possible to compile DNX against Lego Mindstorms EV3 processor. I know there is some ARM support and even there are some builds ...
2
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1answer
749 views

EV3 Block problems?

I don't see what is wrong with the way i made my program. It looks like this. The idea is that in the while loop [01] shall the robot move forward until it see something brown. If it see ...
3
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1answer
103 views

No power to Mindstorm EV3 Brain

My 11 year old just spent her entire Christmas Day assembling the Mindstorm EV3 Reptar, but when we put batteries in the brain nothing happened. It didn't turn on, no lights, no sign of power at all. ...
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1answer
89 views

Direct/system command for reading the display buffer of EV3 bricks?

I recall being able to read in the display buffer of NXT 2.0 bricks over Bluetooth/USB by issuing Read IO Map system commands. I've looked through the bytecodes and communication documentation for the ...
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1answer
61 views

How do I add the lms2012 library as a dependency within Visual Studio

I'm following this question and am curious how I go about actually importing the following the necessary dependencies. I see this line: #include "ev3sources/lms2012/c_com/source/c_com.h" and have ...