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.

learn more… | top users | synonyms

5
votes
1answer
207 views

Is there a documented process in 'Jamming' an NXT Ultrasonic sensor?

Just trying to gather a bit of information for a competition between a few other NXT builds, I was wondering if there was a way to make the ultrasonic sensor completely useless for the competition as ...
5
votes
0answers
191 views

PosRegEnable - How to change motor parameters?

I want to set PID parameters for a faster 'attack' when using PosRegEnablePID() on a motor. I am compiling with nbc/nxc 1.2.1 r4 mac osx fatbinary using -Z2 and -EF flags. But the compiler says: # ...
5
votes
1answer
298 views

When I connect my Samantha Module to my NXT, the NXT shows the wrench icon

When I connect my Samantha module to my NXT, it shows the wrench icon instead of the USB icon. I have tried updating the firmware, to no avail. The blue light does not turn on. It sees the WiFi ...
4
votes
1answer
395 views

What can cause programmed NXT 2.0 motors to misfunction when small resistance is applied?

I have robot built per the Alligator tutorial included with Mindstorms NXT 2.0. Everything works correctly if I hold it off the ground and make sure there is no load on the two leg motors. However, if ...
4
votes
1answer
2k views

Can you program an RCX using the Mindstorms NXT 2.0 software?

I was asked to teach a robotics class and found several RCX bricks in storage. Can I use these bricks with the Mindstorms NXT 2.0 software? If not, what would be the software I would need to use the ...
4
votes
1answer
281 views

NXT motors not moving?

I've been looking around the net for a solution to this problem, to no avail. After taking my NXT v1 out of storage, I tried using a motor, but it sortof just, moves back and forth once, then ...
4
votes
2answers
285 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 ...
4
votes
1answer
413 views

Program a full rotation of a NXT motor in X seconds

I'm interested in mimicking the functionality of the Arqball Spin, at $60 it isn't cheap so I'd like to make the most out of my Mindstorms parts. I'd like to use NXT-G to program a motor to rotate ...
4
votes
1answer
1k views

How do I update my NXT firmware using EV3 software

The new EV3 software tells me to update my firmware on the NXT. When I go to the tools menu and select update firmware it tells me the NXT brick can not support this function.
4
votes
1answer
2k views

Mindstorms 2.0 can't download to NXT brick with error 142023

Using Mindstorms education 2.0 on a Windows 7 computer I can't seem to get the program to see the NXT via USB or bluetooth dongle. When connected by USB nothing appears in the NXT window with device ...
4
votes
1answer
72 views

In LEGO mindstorms NXT programming: is it possible to download a file from a robot onto the computer?

I've lost the file for a project, but the robot still has it, and I'm wondering if it is possible to transfer the file onto my computer from the robot, and continue to work on it. How would you do ...
4
votes
2answers
155 views

Mindstorms start block is missing

the start block is missing on my mindstorms NXT 2.0 programming space. i cannot run any program without it. i have tried, restarting the programming window, placing a block and even just undoing to ...
4
votes
1answer
2k views

How to control a RCX from a Mindstorms NXT

I have both an RCX and an NXT. I would like to control the RCX brick from the NXT (and possibly communicate back to to the NXT from the RCX). I would like to avoid purchasing the Mindsensors RCX to ...
4
votes
2answers
164 views

How can I find the analog output of a color sensor?

Could anyone provide me with an image of the voltage output of an NXT or EV3 colorsensor. I would like to have the analog output if it's possible, and not the digital output.
4
votes
3answers
1k views

Interfacing Mindstorms NXT 2.0 with webcam

I very recently started playing with Mindstorms and have used the sensors that was provided along with the NXT 2.0 set. I'm planning to work on something on the lines of image processing and I need a ...
4
votes
2answers
2k views

Bluetooth will not connect Error code: -142016

nxt 2.0 Error code: -142016 The Bluetooth does connect. I am not having these issues with any of my other Bluetooth devices running off of the same dongle. Where do I find the the meaning of any ...
3
votes
3answers
5k views

Lego Mindstorms NXT software error

I have installed the retail version of the NXT software. Due to pitiful performance on my Mac (OSX 10.7 Lion) I followed guidance on other forums and uninstalled Flash 11 and reinstalled 10. Now ...
3
votes
2answers
269 views

How can I get replacement Mindstorms NXT components?

I recently have been trying to work with robotics, via the Mindstorms NXT kits. But as of lately it seems the physical components in the kit went missing (everything except the brick, cables, servos, ...
3
votes
1answer
253 views

How can I make a precise one-way clutch using Technic elements?

I need a mechanism so that if a (NXT) motor rotates forward, it moves one gear, but the other stays still, but if it rotates backward, the first gear does not move, but the second one does. I found ...
3
votes
2answers
3k views

Programming the NXT brick using an ipad app

for the past few years, I have been using netbooks to program the NXT. I would like to move into the 21st century and use ipads. Is there an ipad app for programming the NXT brick?
3
votes
1answer
75 views

Installing Linux on my NXT

I have an old NXT laying around and I want to set it up with my printer so I can connect it to the cloud. In order to do this I need to install Linux on the NXT and connect the NXT's USB port to the ...
3
votes
1answer
82 views

Did all the nxt 2.0 lego content vanish from the Lego website?

I keep finding links to pictures and projects that evidently used to be on an nxt content site at lego. Is all of that information just gone? A site called nxtasy also seems to have vanished. Are ...
3
votes
2answers
139 views

Can I use the NXT 2.0 programming software with my educational set?

I have bought the 9797 NXT base educational set. It didn't include any software. I know that I can freely download the NXT 2.0 software (which was included in the 8784 retail set). Is it possible to ...
3
votes
1answer
236 views

NXT Bluetooth “Failed!” when turning on

When I attempt to turn on my bluetooth, the response on the display after about 5 seconds is "Failed!" Then I'm sent back to the main menu. I've reset the unit and updated to latest firmware (1.31) ...
3
votes
1answer
100 views

Finding certain positions in a room?

I have LEGO NXT and a square room of 100x100cm. I would like to use the center of the of the room always as my starting point(the black box). The green box is going to be my park area. Circles can be ...
3
votes
1answer
309 views

Can I open my old NXT program files in the new EV3 software so I don't have to rewrite the entire program?

I would like to use or convert NXT-G 2.0 programs for use with the new EV3 software. Is there an easy way to convert them besides just building them from scratch in the EV3 environment?
3
votes
2answers
684 views

Unable to connect to NXT using NeXTTool via USB cable

For reasons beyond me, the NXC program MotorControl22.rxe in my NXT has disapeared. So i thought I'd just download it from my computer over to the NXT using NeXTTool. This is where the trouble ...
3
votes
1answer
232 views

Help Installing NXT-G On Mac 10.6.x

I'm failing to install NXT-G on Mac 10.6.x. Whatever I try seems to end up with an error saying "A required file is broken" when I try to run the IDE. Could someone talk me through the steps please? ...
3
votes
0answers
110 views

NXT shuts down in 5 minutes

I have an NXT brick that will always shut down after 5 minutes. No, it is not the sleep timer. Documentation from the NXT Hardware SDK, page 17, states that if the ARM7 processor does not send back ...
3
votes
0answers
203 views

Flash update breaks the Mindstoms NXT viewer

After udating to the lastest version of Flash on my Macbook Pro (OS X 10.7.4) The Mindstorms NXT software that comes in the box no longer displays the build instructions. It does load up, but the ...
2
votes
2answers
659 views

Is there a fix for an NXT reporting “File error!” when running an EV3 program?

I downloaded the new EV3 software from Lego and installed it on Windows 7. The EV3 software runs. I plugged in an NXT using a USB cable. EV3 can edit the memory on the NXT and remove ...
2
votes
1answer
234 views

Apart from the LEGO brick, is there any other hardware that has an NXT firmware written for it?

I am trying to find out if you can upload LEGO NXT byte-code to any other hardware, so I am just checking to see if anyone has ever written the LEGO firmware for any other hardware. Maybe hardware ...
2
votes
3answers
763 views

What is a normal range of reading of the Light Sensor using EV3 Raw Sensor block?

EV3 software does not support the Light Sensor. It does support the Color Sensor. The solution is to use the Raw Sensor Block. What is "normal" for raw sensor block readings? I'm getting readings ...
2
votes
1answer
101 views

NXT brick erratic programming behavior

I think I have a defective NXT brick. It has been programmed to move in a direction for 1 second, wait 1 second and then move in the reverse direction for 1 second. The code downloads on another ...
2
votes
1answer
2k views

Bluetooth pairing successful in OSX but Mindstorms NXT software still can't connect

I'm using OSX Mountain Lion. I've installed the Mindstorms NXT software successfully using the NXT Script.rb script from Lego's web site, which is supposed to tweak the install so that it is ...
2
votes
2answers
156 views

NXT Brick will not update firmware

I'm running 6 NXT robots in an introductory class. Occasionally we've had bricks that would not accept a program and I've reset the brick by pushing the reset button under the battery pack as well as ...
2
votes
1answer
163 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 got that fixed. The software works,but I think the programming doesnt. I made it so If I push a button,the ...
2
votes
0answers
123 views

LEGO turing machine using Rascal

I followed the instructions on LEGO Turing Machine and succeeded to build it. Next I've tried and failed to program it using NXT Mindstorm GUI. The site mentions a Rascal framework, but it doesn't ...
2
votes
1answer
164 views

What's the sight of the ultrasonic sensor according to the distance of the object?

Hey I'm programming a sumobot for a first-year university Civil Engineering project. We should need the sight of the ultrasonic sensor according tot the distance of an object. For example, the sensor ...
2
votes
0answers
206 views

Ideas for large NXT projects [closed]

I currently have 6 NXT sets. Can anyone think of some large scale projects that I could attempt using most of the NXT bricks and pieces together?
1
vote
2answers
468 views

What is the difference between nxtG and nxt 2.0?

I'm familiar with NXT 1.0 and 2.0 but I've also seen reference (program samples, etc.) to NXT G. What's the difference?
1
vote
1answer
78 views

NXT or EV3 gyro sensor

Do NXTs or EV3s have gyro sensors or built-in gyro sensors? How can I know the direction of the robot?
1
vote
1answer
172 views

Accidently Deleted System files on Nxt 2.0. How to restore system files? [duplicate]

I have accidentally deleted the system files from my NXT 2.0. It is making a continuous clicking sound. How to I restore system files. I have the system files, but my computer can't detect it! Please ...
1
vote
2answers
78 views

How to install NXT Firmware 1.28?

Lego is giving 1.31 from their website but I need 1.28, how can I install it?
1
vote
1answer
36 views

Is it possible to add block to the on-brick “NXT Program” menu?

I have an NXT 2.0 (8547) set. Is it possible to add some custom blocks to the NXT progranm submenu on the brick itself (like the existing "forward 5", "turn left", ...) so that I can add and use some ...
1
vote
2answers
166 views

Robot that searches for lights

I use Lego Mindstorms NXT 2.0. I want to schedule my robot to move to where there is light αnd then when it finds it (a large amount of light, for example 80%) to stop and move another motor for 30 ...
1
vote
1answer
147 views

How to use two NXT bricks for 3+ motors and 4+ sensors?

I need to use multiple bricks in order to use more motors and sensors. I need to read sensor values, and tell motors to move. I've tried using bluetooth, however my attempts haven't been very ...
1
vote
2answers
131 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 ...
1
vote
1answer
131 views

ERROR CODE 7- Cannot download needed file for the program

I am kind of new in LEGO MINDSTORMS, I tried to download a program to the NXT robot and got the Error code 7- "Cannot download needed file for the program" - can someone tell me what should i do?
1
vote
1answer
269 views

What are the memory requirements of EV3-G software blocks running on NXT bricks?

The NXT brick has about 130K memory available for user programs. With the newer firmware required for downloading EV3-G programs that memory has been reduced to 118K. How much memory is used by the ...