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

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Programming EV3 with NXC

I'm trying to run NXC programs (all run well on NXT) but when trying run it on EV3 I find an error. The download from computer to EV3, runs well but trying to run the program with RUN EV3, I have an ...
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Free EV3 simulator(virtual machine) for mac

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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1answer
108 views

Can Mindstorms EV3 communicate using protocol 802.15.4?

My aim is to make the robot communicate using protocol 802.15.4 through a USB dongle 802.15.4 over 6LoWPAN. The robot has to be able to get information from TelosB. I wonder whether this possibility ...
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2answers
1k views

Where can I download the EV3 education edition software?

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
89 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 = ...
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3answers
982 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 ...
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1answer
105 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 ...
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Not detecting motor port D

We are trying to program in LabVIEW, using all 4 motor ports. On the port selector, port D is not even showing up.
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68 views

EV3 T Rex problems

I am new to this and I need some help with the moveabsolute block which is descirbed in chapter 16 of Daniele Benedetelli's book. In figure 16 - 2 he describes the block and here is my problem: I ...
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1answer
164 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 ...
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49 views

Light on color sensor is blue

We had the sensor color on red and it was working with our remote. We changed the batteries in the 'brain' and now the light sensor is blue and won't work with the remote. Any suggestions? It's a ...
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64 views

Align with a Line using Color Sensor

How can I align on a line using a NXT Color Sensor and a EV3 color sensor? When I programmed it, the EV3 color sensor detects black first! Please help!
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2answers
431 views

Creating a native EV3B block

I'm trying to create a native block for a hardware sensor. I've got it working pretty well, but can't get it to show up in the "port view" as anything but a sound sensor. I really need the live view ...
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2answers
596 views

Should I buy the retail or education version of Mindstroms EV3?

There are other questions that list the differences in the retail and educational version but I cannot judge which one I should buy (educational or retail). I am buying Mindstorms for the first time, ...
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2answers
407 views

Ultrasonic sensor option missing in Wait block in Labview

I have hooked up the EV3 brick and the Ultrasonic sensor (on port 4) from the older mindstorms set 8527, and using the most recent Labview software on windows 7. I am trying to test the model for ...
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1answer
216 views

EV3 bluetooth controller for mac

Is there a suitable EV3 controller for mac? It should be a compatible alternative from the official EV3 controller in the iOS app store or google play.
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0answers
75 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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99 views

Execute program programmatically

I want to program our Ev3 for FLL (class assignment), and I want to use an object oriented approach in a very procedural environment. Is there a programmatic way to execute another program inside the ...
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2answers
303 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 ...
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2answers
106 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
126 views

Why I get this “message unable to compile some documents for deployment ev3”?

I have a LEGO Mindstorms EV3 program that I was working on for a long time but recently and suddenly when I try to download the program the software displays the following message: "unable to ...
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1answer
135 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 ...
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3answers
157 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
422 views

Are NXT Light sensors compatible with EV3?

I would like to use the NXT light sensors my EV3 brick. I don't have enough light sensors as I need 2 for each robot (per set) and it only comes with one. However, I have a lot of NXT sensors. Will ...
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1answer
58 views

Can additional MyBlock icons be added to the EV3 palette of icons available in the MyBlock builder?

I'm a big believer in using MyBlocks when using EV3. For FLL teams, every robot needs to move forward, backward, turn right, turn left, arm up, arm down. Even before a robot is built, those MyBlocks ...
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1answer
83 views

Trying to get a modified traffic signal challenge worked out

The challenge is for a robot to go around the perimeter of a rectangular field and execute 90 degree turns when it gets within 4.5 inches of a wall. Simultaneously, if the bot encounters a red flag, ...
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42 views

Trouble with Commander app: Using buttons to control motors

I'm having trouble with the Commander app for Android. I've put an EV3 into set 8448. I'm using one of the large motors for propulsion and a medium motor for rack and pinion steering. I don't have the ...
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75 views

Lego EV3 - Get output device type, opOUTPUT_GET_TYPE

I would like to know what kind of motor (XL, L) is connected to EV3 output port (A|B|C|D). I need to use direct command: Instruction opOutput_Get_Type (LAYER, NO, *TYPE) Opcode ...
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1k views

EV3 brick cannot connect my to computer

I can't connect my brick to my computer. It keeps saying it can't communicate with the brick. My brick has no firmware. My friend said to change the USB cable but it still doesn't work. I can't ...
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3answers
848 views

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)
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2answers
282 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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2answers
635 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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93 views

Lego EV3 - sending direct commands over RFCOMM Channel (Objective-C, Xcode)

I successfully open RFCOMM Channel to Lego EV3 brick with code: IOBluetoothDevice *device = [IOBluetoothDevice deviceWithAddressString:@"xxxxxxxxxxxx"]; IOBluetoothRFCOMMChannel *rfCommChannel; ...
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1answer
373 views

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 ...
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2answers
243 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?
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2answers
228 views

Can't get EV3 to work with touch sensors

My FLL team just got a couple of EV3 sets and the kids were trying to program a simple switch that has the robot drive into a wall, back up, and turn right once the touch sensor in the front is ...
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1answer
81 views

Lego EV3 doesn't respond to direct command

I tried to execute command (via bt) play tone: play_tone = '\x0F\x00\x00\x00\x80\x00\x00\x94\x01\x81\x02\x82\xE8\x03\x82\xE8\x03' # send commands to EV3 via bluetooth with ...
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1answer
148 views

Is the LEGO Mindstorms EV3 brick waterproof?

I am trying to build a ROV (Remotely operated underwater vehicle) with Lego Mindstorms Ev3. Is it waterproof?
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299 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
281 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> ...
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2answers
1k views

Is there a fix for an NXT reporting “File error!” when running an EV3 program?

I downloaded the new EV3 software from Lego and installed it on Windows 7. The EV3 software runs. I plugged in an NXT using a USB cable. EV3 can edit the memory on the NXT and remove ...
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1answer
81 views

Teleoperated arm trouble

I have built a robotic arm with the lego Mindstorms ev3. My goal is to control its motion via teleoperation, that is , to have a gyro sensor strapped onto my arm and have the robot mimick the up and ...
2
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1answer
115 views

How can I use the EV3 educational firmware instead of the retail version?

I have an EV3 brick from the retail kit, which is currently running the retail firmware. I would like to replace the EV3's firmware with the educational version. How can I do this?
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1answer
160 views

EV3 Rapt3r's head cable interfering with slithering

My Rapt3r is working great, except that the cable that goes from the head to the "Intelligent Brick" physically interferes with the slithering on the side on which it is plugged (port 4). Physically ...
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1answer
184 views

Is it possible to connect EV3 and NXT bricks like master/slave configuration via bluetooth?

Can I make a Bluetooth connection between LEGO EV3 bricks and LEGO NXT bricks? and If it is possible how to handle the software to make a chain between them?
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1answer
238 views

Direct command lego ev3 [closed]

Is there any documentation about direct command bluetooth of EV3? Thanks, regards!
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1answer
764 views

Code for PID for EV3-g

I want to use PID for my Ev3. I used PID for NXT-G before, but I have never used EV3-G before and don't know how to get PID. Could someone please post a screen shot of the code or upload the file?
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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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161 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.
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243 views

Does NXC work with EV3? [duplicate]

Is it possible to create and run NXC programs on the EV3 brick? I installed BrixcCC, created a simple Hello World NXC program and selected "Download and Run" in the Compile menu. The EV3 brick made ...