Questions tagged [nxt]

A programmable robotics brick released by the LEGO company in late July 2006 and uses Technic connectors. This was preceded by the original RCX brick, and succeeded by the EV3 brick.

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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 ...
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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 ...
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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; ...
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4 votes
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Kick a LEGO MINDSTORMS NXT p-Brick out of SAM-BA mode without writing new firmware?

I recently received a LEGO MINDSTORMS NXT p-Brick which, surprisingly, still has the original retail V1.01 firmware on it. My goal is to extract its current firmware image to a file while maintaining ...
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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 ...
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2 votes
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NXT 2.1 And Windows 10 V2004

Has anyone had any luck installing the NXT 2.1 software onto a Windows 10 PC running V2004 19041.1052 build? I keep getting an error: This publisher has been blocked from running software on your PC. ...
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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 ...
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How do I sync audio and movement on my NXT 2.0?

How do I sync audio and movement with my NXT 2.0? I'm building an animatronic head and I can't find a good way to sync it with external audio because the internal speaker is too quiet.
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Program just stops motors and won't move

I'm trying to make a program in the NXT software that turns on the motors unlimited, then waits until something is less than 30 cm, stops the motors, turns to the left 30 degrees and saves the value ...
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5 votes
1 answer
157 views

Lego RCX to NXT converter cables not working properly with EV3

I recently got some of these cables(see picture below) to control an old RCX motor. Some things to note before reading on. I tried both the medium and large motor blocks and played around with power, ...
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128 views

Mindstorm Nxt Brick not starting

My Nxt Brick is not starting at all after sitting idle for an year. I tried all options like resetting, re-installing the software etc. The laptop doesn't even show up Lego in Device Manager. Any ...
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3 answers
282 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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NXT software on Windows 10 isn't detecting NXT brick

I have the Mindstorms NXT software and brick (CPU), and I worked with them a long time ago running NXT on a Windows XP. Now, I would like to retrieve the brick to teach my son, and I installed the NXT ...
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2 votes
0 answers
81 views

Why won't my Lego Mindstorms NXT stop beeping/clicking and work properly? [duplicate]

I was trying to update the firmware on my NXT but suddenly the screen went blank and it started beeping. I unplugged and re-plugged my USB and a notification came up saying that the device ...
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3 votes
3 answers
739 views

Online link to the LEGO NXT firmware (v1.31) source code or IAR ARM LEGO development tools?

I am looking for the source code to latest NXT firmware (v1.31). I found the binary image is on LEGO site: https://www.lego.com/en-us/themes/mindstorms/downloads, but no links to firmware source code ...
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Mindstorms NXT NXC RemoteStopProgram fails compilation

I have two NXT bricks connected and they work together using Bluetooth, sending messages between the two works. The master NXT will start a program on the slave NXT with the RemoteStartProgram ...
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Where to start with a custom firmware for the NXT

In the process of hardware hacking with my NXT 2.0 I Found no easy way to connect the device as a USB storage device. Is there a specification that states how the NXT interacts over USB, or should I ...
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4 votes
1 answer
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Unable to save NXT program

I pulled out my NXT recently to tinker around with it. After reconstructing one of the suggested builds, I was writing a small program for it. About halfway through, I needed to leave my work, so I ...
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3 votes
2 answers
149 views

Does repeated flashing cause degradation NXT

I have a Lego Mindstorms NXT 2.0, which I'm tinkering around with, writing a custom firmware for. I just want to know if repeated flashing could damage the flash memory.
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4 votes
0 answers
440 views

Lego Mindstorms NXT 2.0 Not turning on

I have a Lego Mindstorms NXT 2.0, which worked well for a couple of years. However, after the last few weeks, it seems to not boot up. I took it apart, and noticed it seems to have a different ...
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4 votes
1 answer
231 views

Can I use Microsoft Makecode to programme Lego NXT bricks?

As a teacher, I only have access to Chromebooks and I cannot (IT will not let me) use Linux on them. I'm trying to use a text-based coding language to programme NXTs. I would use ROBOTC, but I cannot ...
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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 ...
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8 votes
3 answers
4k 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.
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1 vote
0 answers
111 views

NXT not updating, "Cannot locate NXT device to download firmware!"

I am using a Bluetooth connection trying to update firmware from 1.05 to 1.31 and it displays the message: Cannot locate NXT device to download firmware! My NXT works fine other than that. I got ...
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2 votes
1 answer
249 views

how to send direct command to ev3 brick

I am new to ev3 python but am working on a project. I was reading about NXT-python that " It works by sending the direct commands detailed in LEGO's "Blue-tooth Development Kit" to the NXT brick" I ...
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3 votes
1 answer
63 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 ...
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2 votes
1 answer
106 views

Rearing off to the left without telling it to

I've started to build a robot, but when it drives it veers off to the left even though I'm just telling it to go straight. I think I need to do something to the motors but I don't know what or how. I'...
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1 vote
1 answer
455 views

How to connect an NXT brick to the LEGO programmer application on an iPad?

Can you connect a NXT brick to an iPad via either USB cable or Bluetooth? For me neither seem to work even though the EV3 brick (and the LEGO programmer application) should be backwards compatible. ...
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2 votes
1 answer
303 views

Where's the iNXTG app for programming NXT from iPad?

I'm trying to find the old iNXTG to program NXT bricks via iPad but it is no longer available in the Apple Store. Does anyone know if there exists an archive for programs like that? The problem is ...
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3 votes
2 answers
962 views

NXT Sensors not working

I'm looking for advice. I pulled my Mindstorms 8547 kit out of storage and started to play with it after several years of inactivity. I found that the Color Sensor, the Ultra Sonic Sensor, and the ...
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1 answer
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Program for NXT golf robot not looping properly

This is what I made: I will put this robot straight in line with the ball I have to make this robot go forward and once it reaches the ball, I have to make it stop and hit the ball with the swing ...
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1 answer
315 views

How could I make a golf robot from a LEGO NXT kit?

I want to make a golf robot. It will be placed straight in line with the ball. It will approach the ball and swing. The part where I get confused is how to get it to swing in a left-right motion when ...
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3 votes
1 answer
647 views

Connecting 2 NXT bricks in order to control motors and sensors from one brick

Is it possible to connect two bricks using a cable (connecting port 4 to port 4) , and then have both programs run by only pressing one button? I want the sensors attached to one brick affect the ...
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2 votes
3 answers
1k views

How to retrieve a deleted program file from the lego NXT

I have been programming a complex file for my Lego Mindstorms NXT. I accidentally deleted my file from the PC, but it is still available on my NXT brick. Is there any way that I can retrieve the file ...
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1 vote
1 answer
110 views

How to send through Bluetooth motor angle position and mirror that position on another motor?

I've built a steering wheel that checks the servomotor position using NXC function - MotorRotationCount(). Now, I want to send that position to second brick using Bluetooth and apply that servomotor ...
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3 votes
3 answers
143 views

NXT motors spin when in air but stop on ground

I have a car that I made with 2 motors in the back and one motor in the front. The motors spin fine in the air but when I put it on the ground to test my program the motors stop. The robot itself isn'...
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1 vote
2 answers
798 views

How to flash a LEGO Mindstorms brick and program it in another language

I have a basic LEGO Mindstorms kit which I wanted to use for testing a very simple object-avoidance project. I am trying to find a relatively simple way to flash the brick and upload scripts to it ...
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0 votes
1 answer
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Help with Multiple Motors/Intelligent Bricks and coding/ programming/ daisy chaining

I have built the accompanying robot earlier in the week. I have a challenge where the robot needs to find white/black bricks then store them on a tray and then travel over to another robot and ...
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3 votes
2 answers
111 views

Angular resolution of NXT motor

I am sure that I read somewhere that the resolution of the motor sensor was 2 degrees, but I can find no mention of this in the NXT Help file. What's more, the motor control block allows the Duration ...
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2 votes
2 answers
738 views

How to use the ultrasonic sensor on mindstorm NXT

I've been struggling for some time on this. I'm trying to code the robot to move when the distance is above a certain integer and stop when the distance becomes lower than the certain integer. I'm ...
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3 votes
1 answer
1k views

Which of the LEGO Mindstorms 9797 (NXT Education base set) Software is compatible with Windows 10

I have LEGO Mindstorms NXT 9797 and downloaded the following Windows PC Versions: NXT Edu 2.1F6 PC App ---Education Version NXT Ret 2.0F5 PC App ---Home Version Which one of these are compatible ...
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3 votes
0 answers
591 views

Why can't I install the NXT software on macOS High Sierra?

I just got an Mindstorms EV3 for Christmas, and learned that you can have the NXT communicate with the EV3 in the NXT software. I tried to install the NXT software on my Mac, but all that happens is a ...
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2 votes
1 answer
767 views

Lego Mindstorms education NXT 9797 software for a MacBook Air [duplicate]

Where can I find Mac OS compatible software for the Lego Mindstorms Education NXT Base set (9797)?
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5 votes
2 answers
343 views

How can I program a motor to rotate towards the source of sound?

I have 3 sound sensors and a motor connected to four ports of the same brick. My motor should rotate by some angle towards the highest sound detected by the sensor, and now I'm wondering how I'm ...
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6 votes
2 answers
684 views

How to fix the 4.3V output supply of a NXT 2.0?

I have a Mindstorm NXT 2.0 from 2007 (PCB code: 62115.40H) at which the sensors except the simple "Touch sensor" are no longer working. Also the tacho-signal of the motors do no longer work. (The ...
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1 vote
0 answers
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LEGO Mindstorms EV3: Camera recommendation for line tracking

I am planning to build an autonomous car in LEGO Mindstorms that will use ultrasonic or infrared sensors for collision avoidance and in the future also a camera for line tracking. I am now wondering ...
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10 votes
1 answer
1k views

Lego Mindstorms EV3: programming language recommendation

I am planning to build an autonomous car in LEGO Mindstorms that will use ultrasonic or infrared sensors and in the future also a camera for line tracking. Currently I construct my programs using the ...
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3 votes
1 answer
732 views

LEGO EV3 on Chromebooks not recognizing NXT bricks

I teach two LEGO robotics classes in middle school and in one of my classes I am using EV3 and in the other NXT. I was able to have these classes because of the Chromebook app, but the problem I am ...
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4 votes
2 answers
157 views

Uses for tracks in 9648

Has anyone used the Tank tracks (429139) from Lego education set 9648 for anything other than a tank? The tracks are fixed in size, and I've found the application rather limited (driver belt, track) ...
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2 votes
1 answer
2k 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 ...
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