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

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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 ...
17
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4answers
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Is Mindstorms EV3 backwards compatible?

LEGO Group announced the next Mindstorms version, the EV3 which will be available in the Fall, 2013. Does anyone know if the new version, specifically the controller, will be backwards compatible ...
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1answer
757 views

What does EV3 stand for?

I was wondering what the official reason behind the name of LEGO's latest MINDSTORMS robotics platform. What does "EV3" stand for?
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2answers
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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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3answers
2k views

How to remember initial position of a robot and return to it

I have an EV3 robot with motors, like a car, that can move forward/backward and left/right and have some sensors attached. I want it to remember its initial position by remembering all the movements ...
6
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4answers
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No software with the EV3 robot?

We bought EV3 robot but it looks like there is no software and we have to pay an additional $99 for the EV3 software. Is this true?
6
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2answers
2k views

What are the known software tools for the EV3?

The EV3 is coming in Fall/Summer of 2013 and we tons of unknowns that will come in EV3. I am curious what software EV3 will run and will older generation software run on EV3 (NXT 1.0). And my final ...
6
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2answers
125 views

Making an ATM with an EV3

I am building an ATM using my LEGO Mindstorms EV3, but I ran across a problem. The problem is that I want to be able to input the amount of money that I want to get out of the ATM but I can only have ...
6
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1answer
520 views

How to get good color readings from the color sensor?

What type of setup is needed to get good color readings from the Mindstorms EV3 color sensor: Shape of object? Size of object? Distance to object? Color of background?
6
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1answer
468 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.
6
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1answer
879 views

EV3 as master and NXT2 as slave?

Will it be possible to daisy chain a NXT brick as a slave of a new EV3 brick ?
6
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1answer
742 views

How can I rotate an EV3 motor an exact number of degrees using RobotC?

I'm trying to rotate the motor of an EV3 by an angle of 50°. I can't. How I can rotate a NXT/EV3 motor by a given angle using RobotC?
6
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2answers
547 views

Communication between two Ev-3 bricks

How the communication between two Ev-3 bricks is done over Bluetooth? What is the nature of data that can be communicated?
5
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3answers
640 views

Is there a microphone that works with Mindstorms EV3?

I'm planning to program my EV3 robot to do voice chat over VOIP using ev3dev and a Debian program. Is this possible? Are there microphones known to work with EV3, and has anyone had experience using ...
5
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1answer
690 views

Export Lego Mindstorms Code

I was wondering if it was possible in any way to see the actual code that is generated by the Lego Mindstorms IDE. I know there isn't a direct 'export to code' option within the tool but I wondered ...
5
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2answers
2k 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?
5
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2answers
142 views

Mindstorms Software Versions

Here is what I have: Site licences for Mindstorms Software 1.0 (NXT) and EV3. An upgrade to Version 2.0 for the NXT 9 NXT kits 4 EV3 kits 2 Renewable Energy Kits and Temperature sensors My ...
5
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2answers
2k views

Can I change the firmware on a Retail EV3 Intelligent brick to the Educational version?

The LEGO Mindstorms EV3 comes in both educational and retail versions. The educational version differs in bricks, sensors, a rechargable battery and datalogging capability. I would like to know can I ...
5
votes
1answer
506 views

Is it safe to try different firmwares on EV3?

I have prepared a SD card to run Lejos on EV3, as said on Lejos Sourceforge page and I'm about to test it. What worries me - will I still be able to go back to original Firmware if something goes ...
5
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2answers
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Compatibility EV3 software with NXT brick - known limits?

Lego says I can I use the new software to program old NXT bricks: Q: Is EV3 backwards compatible with NXT hardware? A: Yes. You can program your NXT intelligent brick using the new EV3 ...
5
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1answer
2k views

On Lego Mindstorms EV3, is there a way to change the input parameters of a My Block? [duplicate]

I am writing a program for which I did a My Block. I later realize that I need to add a new input parameter and I can't find a way of doing this without creating a new My Block. This seems it should ...
5
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1answer
3k views

How do I update my NXT firmware using EV3 software

The new EV3 software tells me to update my firmware on the NXT. When I go to the tools menu and select update firmware it tells me the NXT brick can not support this function.
5
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1answer
418 views

Is it possible to use Bluetooth to connect two EV3 bricks using RobotC?

For example to send a numeric value from one to the other?
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2answers
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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 ...
5
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1answer
583 views

Is there a way to program the EV3 brick with NXC?

I tried to program the EV3 brick with NXC so i used BricxCC. The download of the program to the EV3 was successful but when i tried to start the program (which actually didn't show up on the program ...
5
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1answer
202 views

EV3 RMIregulatedMotor Regulation Problems

I have problem with regulation of the motor when I control EV3 with Bluetooth. Here is the code: RemoteEV3 ev3 = new RemoteEV3("10.0.1.1"); ev3.setDefault(); RMIRegulatedMotor leftMotor = ...
5
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1answer
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How do I get the Mindstorm EV3 software to recognize an NXT brick via Bluetooth?

I'm trying to program my NXT brick via the EV3 software over a Bluetooth connection. I can connect it via USB (although that too failed initially but has since resolved; not sure why) but I'd really ...
5
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0answers
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Which move block to use with Gyro?

We would like to make a series Gyro drive blocks. As a general rule what would be the benefits and drawbacks from using the move tank and move steer blocks? My basic design is to read the gyro and ...
4
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5answers
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Will 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
4
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1answer
271 views

What are the differences between NiMH and Alkaline batteries for the EV3?

Currently I am using six rechargeable batteries for my Lego Mindstorms EV3. A few seconds after I start a motor the EV3 gives a notification that that the battery is low. I know that good batteries ...
4
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3answers
2k views

API for Android or iOS connecting to EV3 by bluetooth

There is official API for Windows, WindowsPhone8 and WinRT https://legoev3.codeplex.com/ it lets you connect to EV3 brick and control it remotely from your WindowsPhone. Are there any libraries ...
4
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2answers
848 views

Is it possible to change the OS in the EV3 Mindstorm Brick

I'd like to know how to change the OS embedded into the EV3 mindstorm Brick ( list of it ). For example, would it be possible to replace the existing one by a linux release without losing any ...
4
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2answers
453 views

How can I attach a Technic Linear Actuator to a EV3 Medium Motor?

I'm pretty new to serious LEGO building (never got past very blocky houses as a kid but got into Technic a couple of months ago) and need to connect a Technic large linear actuator (61927) to a ...
4
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3answers
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Is the LEGO Midstorms EV3 software compatible with OS X yosemite?

OS X Yosemite (10.10) was just released yesterday. I want to upgrade, but I am worried that the EV3 software will be incompatible. What should I do? A. Upgrade B. Stay on OS X Mavericks (10.9)
4
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3answers
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In lego mindstorm EV3, can you make the individual programs in a project into functions which can be used in the other programs?

The bit where you program what the robot does using your computer. I'm making a project and I can't fit it all onto the screen, so if you can't do functions, is there any way to zoom out of the screen ...
4
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3answers
3k views

Invert motor block in EV3

New to EV3 so this should be simple. I would like my simple wheeled robot to go backwards. So I put two invert motor blocks, one for port B the other for port C followed by a move steering block. The ...
4
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2answers
2k views

Can I change the Bluetooth identifier for an EV3 brick?

I'm coaching a number of FIRST Lego League teams and wish to set up our lab so that each computer could potentially be paired with each brick, but I want to uniquely identify the bricks (EV3-Team1, ...
4
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1answer
573 views

can't send multiple commands to EV3 using Python

I want to use Python to send commands to an EV3 brick. In C++ things work as expected - for instance, this starts the motor on port A and then stops it after a while: #include <unistd.h> ...
4
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3answers
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 ...
4
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1answer
278 views

Are there any components compatible with EV3 that are more powerful and durable?

Are there components compatible with EV3 like motors, sensors, brackets, other details that I can easily connect to an existing EV3 main block and build something to do real-life tasks? Like ...
4
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2answers
72 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 ...
4
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1answer
283 views

Slow down the mindstorms EV3 motor so target position is not overshot

I have Debian jesse installed on a mindstorms EV3 and I'm using the ev3.lego library: https://github.com/topikachu/python-ev3 I want to be able to slow down the motor as it reaches its target ...
4
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1answer
790 views

How to close color Sensor properly?

I want to get data from the color sensor with Bluetooth. I can get data but when the program terminates, the color sensor dose not close even though I call function close() on the color sensor. The ...
4
votes
1answer
235 views

How can i use my iPhone to scan a barcode and send it to my EV3 brick?

I'm trying to build a sorter that scans the barcode on the brick using an iPhone and sorts it accordingly to the barcode. I cannot use colours due to amount of things to sort.
4
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1answer
455 views

How can I order an Ev3 gyro in Europe

I just bought the Ev3 kit, knowing that the gyro sensor is not included. I obviously want a gyro sensor, perhaps also the ultrasonic sensor. Is there any official channel to order them in Europe? All ...
4
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1answer
1k views

Can I open my old NXT program files in the new EV3 software so I don't have to rewrite the entire program?

I would like to use or convert NXT-G 2.0 programs for use with the new EV3 software. Is there an easy way to convert them besides just building them from scratch in the EV3 environment?
4
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1answer
1k views

Can I buy an add on educational kit for my retail EV3?

We ordered the retail version of Lego EV3, and my son loves it and wants to do more. Are there any add on kits we can buy to expand upon what we have, ie add on motors or special tech pieces, or an ...
4
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1answer
201 views

Custom EV3 Block: “Unable to compile…” (“string subsection”)

I am attempting to make a custom block according to the EV3 Block Developer kit (found here). I was able to create a simple block that returns the length of a string. This is what it looks like: (The ...
4
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2answers
350 views

How can I find the analog output of a color sensor?

Could anyone provide me with an image of the voltage output of an NXT or EV3 colorsensor. I would like to have the analog output if it's possible, and not the digital output.
4
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1answer
43 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 ...