Questions tagged [mindstorms]

Please use this tag only for general Mindstorms questions and compatibility. If the question refers specifically to the EV3, NXT, or RCX, then use those tags instead.

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6
votes
1answer
140 views

Mindstorm 51515 If then else alternative - like a switch statement

Is there a way to act on multiple values for a variable? For example, x may be 1, 2, or 3. If then else allows for 2 conditions. Multiple "ifs" work, but is cumbersome. Ideally I'd like a ...
4
votes
1answer
60 views

EV3 Classroom: Project, Programs and MyBlocks

There are two useful features in the EV3 MINDSTORMS (LabView-based) software, that do not appear to be in the EV3 Classroom (Scratch-based) software. We could create a project and write multiple ...
1
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0answers
51 views

"Heads up! Could not open project" error message in EV3 software

Whenever we try to edit one of our old projects our EV3 Mindstorms Home software shows us the "Heads up! Could not open project" screen. What should we do? I am on the Mac OS Big Sur 11.2.3 ...
6
votes
1answer
4k views

Dimensions of Mindstorms NXT pieces

I don't have access to my NXT boxes at the moment (they're stuck behind a wardrobe that won't get moved for a week or so) and I'm working on this project where I need to know the dimensions of the NXT,...
5
votes
2answers
781 views

Chromebook Lego Mindstorms EV3 trouble

I want to make a crane in LEGO Mindstorms EV3 and I've already downloaded the software but as you can see below some coding pieces here are not in the Chromebook version. Should I download the ...
0
votes
0answers
54 views

NXT clicking brick syndrome

I have reviewed the other questions as well as I can and I am not seeing what is wrong with my NXT brick. Purchased second hand. Turned it on, seemed fine then started exhibiting dead brick/clicking ...
3
votes
2answers
93 views

EV3 software with large blocks

I can't seem to find a download for home or education version of EV3 software that has the large white blocks for either macos 10.13 or 10.15 on my imac. Can someone help? I currently have that ...
4
votes
2answers
409 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 ...
9
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3answers
9k views

How to install Firmware 1.10E on an EV3 home/retail edition brick

If and how can you install firmware 1.10E on an EV3 brick from an home/retail edition set (instead of an education set)? Updates 1.0E9 are only recognized from the Mindstorm software, also with ...
5
votes
1answer
62 views

How can I restore a .lms file created on Mindstorms Inventor to another device?

I have Mindstorms Inventor. I have been able to send my .lms files to my computer as backup. Now I would like to be able to load those programs on another device. How can I accomplish this?
37
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8answers
28k views

What are the best options for building a LEGO RC car?

I would like to build a remote controlled car. And if someone already has a good solution for that I would be glad to try it. It's been a while since I had the time and material to build some LEGO ...
2
votes
1answer
31 views

LEGO EV3 Brick Type Data File not found

So this morning, I was going to build something with my EV3 kit, when I turned on the brick, the brick said 'Type data File not found'. Then I plugged in my touch sensor and all the motors in their ...
5
votes
2answers
837 views

Mindstorms Vision Command - what shall I do with it?

I have a Vision Command camera, bricks and book, still boxed with instructions and a W98 coaster, er I mean CD, and was about to donate it to a charity shop but it seems there's no 64 bit driver for ...
6
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3answers
7k views

LEGO Mindstorms 9797 (NXT Education base set) Software Download

Where I can download the Software for the LEGO Mindstorms 9797 (NXT Education base set)
12
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2answers
2k views

Where can one find the documentation for the LEGO Mindstorms Robot Inventor software?

Is the documentation (either official or unofficial) of the programming "language" for the LEGO Mindstorms Robot Inventor software available somewhere? Preferably online, without requiring ...
4
votes
1answer
104 views

MINDSTORMS 51515 exporting code

I have created a MOC that I am going to put on Rebrickable. But the code is so complex I can’t do what I normally do and take a screen shot of the code and they replicate it. Does anyone know how if ...
7
votes
3answers
3k views

Does LEGO no longer support NXT 2.0 at all?

I am running Mac OS X 10.15 (Catalina) and the EV3 software can't detect my NXT 2.0 using USB.
17
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2answers
13k views

Export LEGO MINDSTORMS EV3 Lab 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 ...
1
vote
2answers
129 views

What is the max current for the LEGO EV3 motors (pin 1-2)?

The LEGO EV3 Hardware developer kit says that the first and second pin of output port provides a current of max of 700 mA with 1 A but the motors appendixes don't have the maximum current that can I (...
5
votes
1answer
154 views

Are there any existing (or upcoming) aftermarket PoweredUp hubs?

I bought the Mindstorms v4 / advanced hub (in set 51515). It's a good set, and the Hub has some great features - notably a rechargeable battery, the ability to run "live" off of USB power, ...
2
votes
1answer
79 views

How can I use the LEGO distance and color sensor from Power Up with the LEGO Mindstorms EV3?

I am asking how I can use the distance and color sensor from the LEGO Power Up series with my LEGO Mindstorms EV3. I know that they have different plugs but I am wondering if there is a solution to ...
3
votes
1answer
459 views

Control two Lego NXTs with an Arduino

I'm new here and also very noob with the Arduino. I have a basic knowledge in Java and some more in C# so code isn't a problem. I can learn it easily. I have a project assigned. I would like to know ...
23
votes
3answers
7k views

What are the differences between the NXT and the RCX?

What are the differences between the NXT and the RCX? I know that the NXT is newer, but what features does it have that the RCX doesn't have, and vice versa (if the RCX has features that the NXT doesn'...
10
votes
4answers
9k 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/...
11
votes
3answers
3k views

How can a Mindstorms robot lift something very heavy?

I have a small LEGO Mindstorms robot and it needs to lift heavy objects, but it doesn't seem possible because the motor cannot bear the load. What methods or mechanisms can I use to make the robot ...
2
votes
1answer
93 views

EV3 program runs fine when connected to PC but does not respond when copied to the brick

I am building the race car mentioned in the LEGO Mindstorms discovery book using an EV3 brick. The problem I am facing is that the driving program runs fine when the brick is connected to the PC via ...
8
votes
2answers
2k views

Capture video stream from LEGO Studio Camera (Logitech USB webcam) in ev3dev?

Once upon a time, LEGO made a digital camera for the LEGO Studios and Mindstorms line. Internally it's an old USB Logitech camera repackaged in a LEGO housing. It could also be used with the old LEGO ...
1
vote
1answer
65 views

Connecting EV3 with older motors using conversion cable

I'd like to use an EV3 brick to power an old 9V motor (74569). To do so I'm going to get one of these conversion cables (x1676) but I'm not 100% sure if it's possible to control the speed of the motor ...
6
votes
1answer
377 views

Any build instructions for vertical Technic/Lego conveyor belts?

I'm trying to figure out how to continuously lift a stream of incoming pieces up vertically, at least 10cm. This is my first real custom build attempt, so I'm very much at a loss on how to go about it....
0
votes
2answers
183 views

Mindstorms - want to perform various tasks, but never two of the same in a row (and other restrictions)

I want to make a program that does a few things in a random order: I have this so far: The problem here is... I have set the switch block with the random number block to 3 different programs to run. ...
6
votes
1answer
504 views

Robot Inventor 51515 - PIN request when connecting via Bluetooth

Just received the item 51515 Managed to connect the Mindstorms controller via Bluetooth from mobile without any problems. Great! Next step, connect from PC. When I connect from my Windows machine I ...
7
votes
2answers
1k views

How do the Infrared Towers work?

I've seen a few Mindstorms "infrared transmission towers" listed on Brick Owl, Bricklink and other sites. However, I cannot find any good documentation that how they work, how they are used ...
3
votes
1answer
200 views

Why does Pybricks on ev3dev have slow performance compared to EV3-G?

I got MINDSTORMS EV3 for my son and me. We installed Python (ev3dev) and ii seems to be running very slowly. I tried setting up the classic LEGO ev3g (block code), and that seems to run fine. Are we ...
1
vote
2answers
92 views

Who designed EV3RSTORM?

I wonder, who designed EV3RSTORM? I have searched on Google but no results.
0
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0answers
37 views

Data logging with a custom sensor like Pixy2 camera

I am trying to use data logging functionality in EV3 LabView using Pixy2 camera, but I get this error when I click on download and run … Unable to compile some documents for deployment: Experiment....
3
votes
2answers
675 views

Where do I find the program to go with the LEGO 51515?

I got a LEGO Mindstorms 51515, and I have finished building my 1st robot, and now would like to program it. However, I cannot find any companion program to use. Where can I install the companion ...
6
votes
2answers
4k views

Lego 3804, Mindstorms Robotics Invention System 2.0 on Windows 10

I gave my grandson (11 years old) the LEGO 3804 Mindstorms Robotics Invention System 2.0. He built a couple things and when he tried to install software to program what he built, the computer would ...
4
votes
1answer
229 views

Is there any cross compatibility between 51515 and 31313?

I'm thinking of buying another Mindstorms set, and I already have a 31313. I don't want to spend $370 just to learn they are completely incapable of communicating with each other, so if you could tell ...
4
votes
1answer
357 views

Spik3r wheels move but the spik3r itself doesn't

Our Spik3r's wheels move but the Spik3r itself does not move. Please see the picture of the back of the vehicle - is it somehow incorrectly built?
11
votes
2answers
786 views

What is the Mindstorms NXT Education kit?

I am considering gifting some Mindstorms NXT 2.0 to school, because I think they would get great value from it. I see that there is an "education kit", and I wondered if that's the way to go. Does ...
5
votes
1answer
103 views

Two Mindstorms touch sensors: how to determine which sensor was pressed?

I'm trying do make simple program. Two motors, two touch sensors. Sensor one increases speed, sensor two decreases. The whole program works very well but only with one sensor. When I put some logic ...
6
votes
3answers
761 views

What are some good purist rotacaster / omni wheel designs?

In robotics, rotacasters or omni wheels are often very useful. It's possible to buy LEGO-compatible ones from some third parties, here's one random example: Unfortunately, LEGO has yet to make any ...
1
vote
1answer
175 views

Mindstorms EV3 - Continuous low battery alarm

My son is facing an issue with his Mindstorms EV3. Every time he turns it on a low battery alarm is displayed and it shut downs. This happens regardless of the batteries, we have tried 12 different ...
7
votes
1answer
747 views

How do I erase all old programs using the new scratch type Education software?

I have 24 Lego Mindstorms EV3 bricks that have old programs and the bricks are named. I want to erase them so they can be used for new students. In the older Mindstorms software I would just reinstall ...
2
votes
1answer
1k views

LEGO EV3 I2C Compatibility

I'm having difficulties with communication between the EV3 and Arduino boards. Does anyone know if the EV3 is really I2C compatible, or is it just close enough? Background: I can get the EV3 to ...
9
votes
3answers
1k views

Old RCX Wires Have Become Grey and Brittle

I have a LEGO MINDSTORMS Robotics Invention System 2.0 (3804) that I acquired back in 2003 (17 years ago), and the wires have become grey and brittle. The wires used to be black and smooth, and ...
6
votes
2answers
13k views

EV3 Ultrasonic Sensor block is not availible in the Home Edition software

I can't find the ultrasonic sensor block on the programming app on my computer. I am using the Lego Mindstorms EV3 Home Edition.
1
vote
1answer
2k views

Is the LEGO Mindstorms Education (not Home, not Scratch based) Edition for Mac OS gone?

I am starting a robotics and programming club with some 9-12 year olds and for the past week I have been developing activities using my Windows version of LEGO Mindstorms (the education / teacher ...
1
vote
0answers
196 views

Strange blocks appeared in my program

In my Mindstorms program, I found these strange blocks. They appeared when I sent this program to my other PC on Windows 10, which is more powerful. They don't work and I can't change them. Mindstorms ...
1
vote
3answers
202 views

Lego Mindstorms NXT 2.0 brick is not working

Recently, I tried to get my old NXT 2.0 brick fixed. Everything seemed to point to the clicking brick problem, but it turns out not to be the only thing, the brick was also getting hot. After ...

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