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.
277
questions
0
votes
0answers
35 views
Could Microsoft MakeCode be an alternative to the EV3 program?
Is it possible to use Microsoft MakeCode for the EV3 as an alternative to the widely used EV3 program by LEGO? What are the benefits and drawbacks?
22
votes
7answers
13k views
Can you program Lego Mindstorms with the Scratch programming language?
My child is learning programming using Scratch in school. Can she program her Mindstorms using Scratch?
4
votes
2answers
80 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.
0
votes
0answers
32 views
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 Mac OS X. I can not find build instructions for ...
0
votes
0answers
36 views
Release date for New LEGO® MINDSTORMS® Education EV3 Classroom? [duplicate]
When is the release date for LEGO® MINDSTORMS® Education EV3 Classroom for New MAC OS (MAC OS 10.15 Catalina)
1
vote
0answers
27 views
How to import file to Mindstorm Programmer?
I got a Mindstorm set a year ago and I stumbled across a build which looked really cool! I finished the building part then I downloaded the program file but I couldn’t import it. I have a MacBook with ...
5
votes
7answers
12k 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 ...
7
votes
2answers
6k views
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 ...
0
votes
1answer
52 views
Is there a way to restart a program with EV3?
I've got a program with a code lock, and I would like the program to restart when you enter the incorrect code. Does anyone know of a way to do that?
0
votes
1answer
57 views
BricxCC not seeing Serial Tower in Windows 10
Same problem with both the native 9-pin serial port and with a USB to 9-pin Serial adapter. Using Lego's original cable.
Start BricxCC Version 3.3 (Build 3.3.8.10). It asks for the connection ...
1
vote
1answer
122 views
What does this error symbol on the EV3 mean?
I get this error image pop up when I power on my EV3. What does it mean?
Also, is there a list of different error codes anywhere, I looked in the User Manual and I could not see anything.
Cheers!
7
votes
3answers
27k views
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 ...
7
votes
2answers
631 views
Ultrasonic problems with the red and blue balls?
I'm still new to NXT, I try to make the robot locate a ball using the ultrasonic sensor, while there I should be in a square area marked by white color.
How can I make the robot locate the object (by ...
2
votes
4answers
925 views
Scroll screen in EV3 Home Edition program
I'm using LEGO Mindstorms EV3 Home Edition program to program my robot. Typically a program becomes wider than the screen. However, no horizontal scrollbars appear on screen.
So how can I view and ...
2
votes
3answers
5k views
Programming NXT color sensor with NXC?
Currently I am working Lego robot that solves 2x2x2 Rubik's cube. I am programming Lego Mindstorms NXT 2.0 color sensor in BricxCC.
I already have RGB data with the command ReadSensorColorRaw. I ...
7
votes
1answer
374 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 ...
3
votes
2answers
301 views
The center “ok” button does not work
My son has Lego Mindstorms EV3. The brick turns on when he pushes the center ok button, but he can't use it in the menu. What's the problem?
0
votes
0answers
36 views
T-R3X the look My Block problems [duplicate]
OK I am making the look My block for the T-R3X program but there is this block which don't know how to make at the end of the diagram in the book.
7
votes
4answers
13k views
How to program two NXT motors to run at the same time?
I'm working on a project with multiple axis of movement… trying to get two motors to run at the same time in order to achieve a mix of two!
1
vote
1answer
950 views
How can I connect the LEGO Mindstorms NXT with an iPad?
I'm looking to take advantage of the older generation LEGO Mindstorms NXT robots by developing a companion app for the iPad. I'm aware that non-jailbroken iPads cannot communicate with the robot via ...
14
votes
2answers
9k 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 ...
3
votes
3answers
347 views
Could not open serial port or USB device
I am trying to use my old RCX 2.0 set on Linux (Xubuntu). The problem is that when I try to download the (official) firmware into the RCX via the command:
nqc -Susb:/dev/usb/legousbtower1 -firmware ./...
2
votes
2answers
16k 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?
2
votes
2answers
394 views
Is the NXT forward compatible with EV3 sensors and motors?
Is it possible to use EV3 sensors and motors with the NXT intelligent brick? I've read that the EV3 is backward compatible with NXT motors and sensors, but does vice versa work as well? Is the NXT ...
3
votes
1answer
232 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?
3
votes
2answers
126 views
Has LEGO ever been used in an assembly line or a manufacturing process?
With LEGO Technic and LEGO Mindstorms becoming ever more sophisticated, I wonder if it has ever been used in a real commercial setting to automate parts of an assembly line or manufacturing / research ...
1
vote
1answer
146 views
How to make of point coordinate system for EV3
I'm trying to make a internal coordinate system for an EV3 Python project I'm doing, but at a complete loss on how to do it. It needs to keep track of how it moves (with wheels) in an X, Y coordinate ...
1
vote
2answers
114 views
What does this symbol on the EV3 Brick mean?
I can’t figure out how to get my R3PTAR to open and close it’s mouth to bite. I keep getting this symbol. What does it mean?
2
votes
0answers
39 views
MindSqualls - can I connect more than one NXT brick using USB?
To access my NXT brick connected via USB with the MindSqualls library, I do the following:
var brick = new McNxtBrick(NxtCommLinkType.USB, 0);
The 0 is serialPortNr. If I were to buy a second NXT ...
3
votes
2answers
101 views
What is a color sensor and where do you get it?
I have an NXT but I don’t know how to make it detect colors, all it does is say “wait”. My set includes a light sensor but I heard some YouTube videos say there was a lego “color” sensor. Does LEGO ...
0
votes
0answers
35 views
Are there any coding platforms for my NXT available for my IPad?
Can anyone tell me any app on the App Store so I can program my NXT? Please let it not be one of those ones that you have to pay or one of those that are just controllers. Thanks for your help.
1
vote
2answers
60 views
Color sensor reliable?
I am experimenting with the light sensor shipped within the mindstorms ev3 package.
My Problem is that the bot is standing quiet at one place. Each value returned by sensor is different, although the ...
2
votes
1answer
71 views
Two motors are driven forward, why are they rotating in different directions?
I have the Lego Mindstorms EV3 Pack and built a simple car with 3 wheels. The back whels are motorized.
When I run the following code:
Motor.A.backward();
Motor.D.Backward();
both motors are ...
0
votes
0answers
70 views
EV3 Spinner factory not moving in the right order
We've built a spinner factory going by the original instructions in the Lego Mindstorms EV3 Education Software, and downloaded the program for it onto the bricks, the Spinner factory moves around, the ...
4
votes
1answer
116 views
What do I need to connect an old RCX2.0 to a computer and is it worth compared to just buying a new one?
From a friend I got some Lego, including an old Mindstorms package (RCX 2.0 as I already found out). It's my first time with the Mindstorms "eco system".
I already found out that I need some kind of ...
7
votes
3answers
3k views
Where do I find Mindstorms building plans?
I have the Mindstorms NXT 1 kit. It includes a printout of the first robot model building plans. The plans for several other robots (e.g. the scorpion bot) are included in the NXT software. However ...
15
votes
2answers
8k views
Can I use RCX sensors and motors with the NXT brick?
I have a bunch of motors and sensors from the original Mindstorms set. It seems a shame I can't use these with the more recent NXT set. Are there any unofficial modifications that allow you to convert ...
7
votes
3answers
3k views
Lego Mindstorms Ev3 home edition on Mac OS Mojave bug - bricks sometimes go blank
I have a fresh install of Mojave and of Mindstorms Ev3 home edition. It seems to work fine but then randomly all the information disappears from the blocks at the bottom of the screen, and sometimes ...
3
votes
2answers
102 views
What does each part do exactly?
It's been a few years since I bought a Lego Mindstorms (v2) which comes with the technic style pieces.
There's beams, axels, rods, connectors... but the majority of the times when I'm building (my ...
5
votes
1answer
2k 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 ...
3
votes
0answers
141 views
EV3 Brick and Commander app bluetooth disconnecting
On OSX on an iPad, we're having an issue with the EV3 Brick and Commander app bluetooth connection constantly disconnecting. The brick just stops responding, so we turn the brick off to disconnect and ...
4
votes
2answers
199 views
Is there any way to find misplaced bricks in LEGO NXT Programming?
I am working on a Mindstorms NXT project. Due to annoying bug (cannot find terminal hotpoint thingy) I can't delete a specific block, and if I do so, part of the program will be cut off from the main ...
4
votes
1answer
629 views
NXT Programming not working
I recently got back into NXT stuff (keep in mind I have a NXT 1.0). My screen was broken, but I got it fixed. The software works, but I think the programming doesn't. I tried to make the motor move ...
2
votes
3answers
2k 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, ...
10
votes
3answers
2k views
How can a Mindstorms robot lift something very heavy?
I have a small LEGO Mindstorms robot and I have to lift something heavy. Now it seems not possible because the motor is not strong enough.
26
votes
5answers
16k views
How can I use more than three motors with one NXT brick?
I'm building Caterpillar Excavator with my NXT, and at the moment I'm trying to control 4 points of motion:
2 Caterpillar Tracks - These should be controlled independently to allow for cornering, etc....
3
votes
3answers
4k views
EV3 brick Bluetooth connection error
I’m unable to pair the ev3 brick to our iPad mini. Both see each other but I keep getting this error on the ipad, Connection Unsuccessful, make sure ev3 is turned on and in range. And the ev3 shows a ...
1
vote
0answers
304 views
ev3 brick blocked during running a program
I pressed "Run my program" (a simple one), and it is stuck with "mindstorms sound_turn_on" displayed on the screen. The name of my program is sound_turn_on. I am using LabView to program it. Now ...
4
votes
2answers
306 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 ...
2
votes
0answers
503 views
Lego EV3 simulator and programming
I've been searching and testing for hours. There is little information on this subject though. I have some specific requirements for a Lego EV3 simulator and programming environment.
I do not want to ...
