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

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2answers
319 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 ...
4
votes
1answer
43 views

What files are required to run an ev3 program?

I'm working on a project that aims to help beginning Lego Mindstorms programmers. I'm developing certain "modules" (moving straight, making a turn) for students to try, and I want to develop a program ...
2
votes
1answer
173 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 ...
1
vote
1answer
76 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. ...
6
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0answers
69 views

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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0answers
65 views

Where does the EV3 software store its crash reports?

I cannot find where the crash reports generated by my EV3 software are stored. I have looked where it tells me to, but I can't find any.
2
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0answers
59 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. ...
2
votes
0answers
280 views

Can I use EV3 with a TETRIX motor?

What program can I use to control a TETRIX motor through the LEGO EV3? I've heard that RobotC currently cannot be used for this. Has NI released a Labview version which I can use to control TETRIX ...
2
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0answers
251 views

Daisy chaining EV3 with RobotC

I'm trying to run EV3 programs with RobotC and trying run on EV3 Daisy Chaining. I have three independent EV3 bricks labelled A,B,C. I want, according to the color reading by the color sensor on ...
1
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0answers
34 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?
1
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0answers
90 views

What are the steps in installing the EV3 block developer Kit?

I've downloaded the block developer kit. How do I incorporated into my Mindstorms software?
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0answers
36 views

Unable to turn on the EV3

I just can not turn on the EV3 with SD card.I only turned on it twice. The EV3 stops at [-leJOS EV3] UI,and don not go to the next step. I charged the battery,reinstalled the software inside of SD ...
1
vote
0answers
175 views

How do I control one EV3 using another through bluetooth and LabVIEW?

I have LabVIEW 2014 and I'd like to control make one EV3 move forward using another through bluetooth using LabVIEW, and I don't want to have to use the computer as a relay. How do I do this?
1
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0answers
85 views

After adding a MyBlock icon to the EV3 palette of MyBlock icons, how can the new icon be associated to an existing MyBlock?

After following the advice given in adding a MyBlock icon to the EV3 palette, can the icon be associated to an existing MyBlock? Something better than copy/paste the contents of the existing MyBlock ...
0
votes
0answers
33 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 ...
0
votes
0answers
63 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?
0
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0answers
60 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 ...
0
votes
0answers
64 views

How to receive response from direct_command_reply from EV3 using Python?

I've established and tested a Bluetooth connection (by playing a tone) between EV3 and Mac running Yosemite with Python 2.7.11. I used file write as in bt.write(tone) in Python to play the tone with ...
0
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0answers
69 views

LEGO EV3 T-Rex movement fix

I tried to make T-Rex with instructions from the LEGO Mindstorms EV3 Laboratory by Daniele Benedettelli. I see that the T-Rex is not able to move forward due to heaviness of the brick. Also the feet ...
0
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0answers
105 views

Lego EV3 running LEJOS with RESTful services

Am running LEJOS OS on my EV3 and trying to add REST APIs so that it can connect to a web application on cloud/containers. The main goal is that, Java web application( REST Client) should send ...
0
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0answers
66 views

Why is Bluetooth is so temperamental?

I had a program that would use the Ultrasonic sensor to detect when it was 6 inches from another robot and then would stop send a bluetooth message to the other and would send the other one off. Like ...
0
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0answers
54 views

Firmware problem or EV3 problem

I've gotten EV3 recently. Sometimes after I download the program it doesn't run and it's not possible to stop it, so I have to reset EV3 to update and download firmware! It occurs many times! I don't ...