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.
343
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How can I remove a rubber band from a pulley?
We have a pulley and a bunch of rubber bands:
We don't know that part numbers, but they all were part of a Mindstorms (RCX 2.0) set. My son was trying use the pulley and band to transfer power to ...
- 17.6k
2
votes
1
answer
213
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Lego Mindstorms EV3 broken screen cable
While taking apart my EV3 brick I accidently pulled on the ribbon cable connecting the screen to the motherboard too hard and it broke.
I figured I could just get a replacement fpc ribbon cable with ...
- 21.8k
38
votes
8
answers
30k
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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 ...
- 9,288
19
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3
answers
6k
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Is Technic compatible with Mindstorms?
My wife bought me a Mindstorms NXT 2.0 for my birthday. I've been reading up on it from as many sources as possible however apart from the 9695 Education Resource Set which adds some additional bricks ...
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5
votes
1
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Lego colors that the powered up color sensors can detect
Lego currently offers two color sensors to use with Powered Up or robotic kits (Spike Prime, Spike Essential, Mindstorms robotic inventor):
https://www.lego.com/en-us/product/color-distance-sensor-...
- 9,288
10
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4
answers
13k
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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 ...
- 21.8k
6
votes
2
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2k
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Is it possible to re-flash the LEGO Spike Prime Hub with Mindstorms Robot Inventor Hub Firmware while retaining all functionality? And if so, how?
Unfortunately, LEGO has recently announced that after 24 years, the Mindstorms line of Robotics Kits is officially being discontinued at the end of this year. For this reason, the 51515 Robot Inventor ...
- 31
1
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0
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93
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Control MoveHub (Boost) and Mindstorms Inventor Hub over one app
I'd like to control Lego Boost (Move)Hub and the mindstorms inventor hub with one app. I know that it is probably possible with python, but my son is not yet ready to programm in a fully fledged ...
- 111
2
votes
0
answers
95
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Mindstorms M.V.P. model doesn't move
I'm a total newbie to Mindstorms 51515.
I am trying to program my M.V.P. model and everything seems to work except the movement programming blocks (pink). Does anyone have a hint or a clue about what'...
- 501
1
vote
1
answer
173
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Impact of Mindstorms sets being discontinued?
I was given some Mindstorms sets a while ago and I'm waiting for my kids to grow up so they can use them. Does the recent announcement of their end mean it will brick (pun intended) the kit? Will the ...
- 14.9k
8
votes
1
answer
427
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How can I control nxt 2.0 robot with a Wiimote in labview?
I am building a robot with Labview for LEGO Mindstorms and I have wanted to hook up the robot to move based on a Wiimote or Wii remote. However, I have not found a file to download to enable me to do ...
- 501
3
votes
1
answer
286
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Is Robot Inventor 51515 future proof? [duplicate]
I need to buy one of Spike Prime or Robot Inventor 51515, but torn between the two choices. The latter is discontinued unfortunately, but is better bang for the buck with more lego pieces.
Robot ...
- 501
7
votes
3
answers
2k
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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 ...
- 71
11
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5
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Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / XP driver
So I've recently dug up my old Lego Mindstorms RIS 2.0 (RCX) and have spent the past few days trying to install it into my Windows 7 laptop. It worked fine, except it could not find the correct ...
- 21.8k
16
votes
5
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32k
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How to use Power Functions with Mindstorms EV3?
Having learned that Mindstorms EV3 doesn't work directly with Power Functions,
Q: Can you use Power Functions motors with the EV3 programmable brick?
A: No, the connector does not match.
I still ...
- 14.9k
1
vote
0
answers
180
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"Heads up! Could not open project" error message in EV3 software [duplicate]
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 ...
4
votes
2
answers
138
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How to change colour of the bluetooth/charging RGB LED in the hub?
I have the Mindstorms set 51515 - Robot Inventor. I want to display the progress of a robot's work using the LEDs.
How can I change the colour of the RGB LED that the hub uses to indicate the ...
- 7,271
0
votes
1
answer
180
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Where do I get PDF instructions for LEGO builds that were only in software, like NXT as of 2019?
LEGO Mindstorms NXT 2.0 (8547) stored almost all of its build instructions in the associated software. LEGO no longer supports the software for modern macOS versions. I can not find build instructions ...
- 14.9k
5
votes
1
answer
106
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EV3 Home Shuts down after 2 min. (lights orange, and 3 Icons Triangle, Gage, Manual)
I just purchased a second hand LEGO Mindstorms Home EV3.
The brick turns on, allows firmware update, etc. However, after about 2 minutes the unit makes a noise, LED's turn red, and 3 icons appear.
...
- 5,215
1
vote
1
answer
120
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Is there a guide on how to code custom blocks for NXT?
The answer to a previous question pointed to "custom blocks for NXT". I am not talking about creating "My Blocks" in the "Custom Palette", but code blocks that can be ...
- 9,288
3
votes
2
answers
290
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Camera for Spike or Mindstorms for Streaming
I have made a few EV3/Spike robots that can be controlled remotely. They are controlled by either a PS4 controller or using a dashboard I built on a website. I'm running Python on the LEGO. However, ...
- 501
5
votes
1
answer
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NXT - Mirror motor rotation
I'm trying to make a program in NXT 2.0 that mirrors the (manual) movements of one motor to another.
I managed to start motor B running in the right direction but I am having trouble controlling the ...
- 9,288
2
votes
2
answers
210
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Multiple Programming Blocks Running at Same Time
My team created a simple program to drive robot out. It consists of a MyBlock to drive straight a specified distance and speed utilizing the Gyro sensor. The program then activates a third large ...
- 9,288
3
votes
1
answer
106
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When using Mindstorms Scratch-like development tool for EV3, is it possible to move a single or a few selected blocks somehow?
Say I have 10 random blocks in a line.
Is it possible to move number 4 to position 1 without also moving block 5-10?
As far as I have managed to move blocks all following blocks also gets moved even ...
- 1
6
votes
3
answers
7k
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LEGO Mindstorms 9797 (NXT Education base set) Software Download
Where I can download the Software for the LEGO Mindstorms 9797 (NXT Education base set)
4
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0
answers
846
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EV3 SPIK3R Mission 2 doesn't move
So I was building Spik3r and I thought I got mission 2 completed. Wheels are turning, legs are moving but the robot just does not move.
It looks like the small wheels should be moving the robot but ...
- 21.8k
3
votes
0
answers
105
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How do I import my programs from makecode (Chromebook) to my EV3 robot
While using makecode I wanted to import my file to my EV3 robot but it says that I have to connect my EV3 robot to my computer and then move the file to the robot. But since I'm on Chromebook I don't ...
- 501
3
votes
0
answers
893
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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?
- 501
2
votes
0
answers
149
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NXT Sensors/Motors not working
I went back to using the NXT brick after two years and I'm having some problems:
Motors do not respond to degrees or rotations;
Ultrasonic Sensor and Color Sensor are not working;
Touch Sensor is ok;
...
- 21.8k
8
votes
1
answer
2k
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What's the easiest way to build a delta robot using LEGO Mindstorms 51515?
I'm fairly new to Lego Mindstorms and I'd like to assemble a pick and place mechanism.
I was looking for existing delta robot designs and found a lot of good looking designs:
https://www.youtube.com/...
- 501
1
vote
1
answer
88
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Mindstorms v2 QuickTime won’t work
Still trying to get Mindstorms v2 working on Windows XP SP3. QuickTime causes software not to run with error code 2095. Have tried reinstalling QT several times. Tried different versions, no change. ...
- 151
3
votes
2
answers
154
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mindstorms ris2 on XP memory error
I have installed mindstorms ris 2.0 on an XP system. Initially it worked fine now I get an “insufficient memory” error. I have reinstalled and tried a different hard drive. No change. Possibly the usb ...
- 151
3
votes
0
answers
191
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EV3 classroom cannot create New Project
EV3 Classroom V1.5.0
Windows 10
I run a lab of 24 laptops running EV3 Classroom v1.5.0. Over the last week, more and more computers are unable to create new projects and/or open existing projects ...
- 501
18
votes
2
answers
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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 ...
5
votes
4
answers
19k
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Mindstorms EV3 PC application won't load
Installed Mindstorms EV3 application on MS Windows 7 Home Premium v6.1 (Build 7601: Service Pack 1) and I keep getting the same error message when launching.
A white window pops up with the following:...
- 1
13
votes
2
answers
4k
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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 ...
- 501
5
votes
4
answers
11k
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How can I use multiple switch options in Lego Mindstorms EV3 software?
What I see is just a simple if/then/else. What I am looking for is to be able to add multiple options, more than yes/no.
I use a motor as a switcher, so I rotate it to some position and measure its ...
- 21.8k
2
votes
1
answer
239
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EV3 file opens to lobby and won’t open any of the saved programs on it [closed]
Help!! I am using the Mindstorms app on a HP laptop to program missions to an EV3 brick for a robotics team. We saved our programs yesterday after finishing programming a couple missions. Today, the ...
- 16.6k
25
votes
1
answer
7k
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What are the electrical properties of electric LEGO systems?
Several electric LEGO systems exist:
LEGO Trains
LEGO Technic Power Functions (PF)
LEGO Mindstorms (in several versions)
...?
How do these systems differ in electrical properties and which systems ...
- 14.9k
4
votes
1
answer
110
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Transformer 45517: power supply or charger?
I would like to build a charging station for EV3 with rechargeable battery (45501).
Does the transformer (45517) give a simple stable dc voltage (power supply)? Or does it provide a controlled voltage ...
- 9,288
6
votes
1
answer
266
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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 ...
- 5,215
4
votes
1
answer
241
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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 ...
- 9,288
6
votes
1
answer
4k
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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,...
CommunityBot
- 1
5
votes
2
answers
1k
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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 ...
CommunityBot
- 1
3
votes
2
answers
134
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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 ...
- 131
4
votes
2
answers
421
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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 ...
- 131
5
votes
1
answer
590
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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?
- 7,452
2
votes
1
answer
39
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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 ...
- 9,288
5
votes
2
answers
969
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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 ...
- 14.9k
4
votes
1
answer
597
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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 ...
- 2,112