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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1answer
150 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 ...
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2answers
1k 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 ...
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2answers
355 views

NXT Motors curving to the right

The NXT motors have been curving to the right by about 10-20 degrees. We have checked the program, no curves. We have checked the wiring, but it is also plugged in fine.
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2answers
942 views

How to turn the NXT at an angle with NXC

How can I program, with NXC, a Lego NXT to turn a specific angle? I've tried using wait() but the problem isn't solved. Can I use RotateMotor()? What parameters should I use? For example if I want ...
4
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1answer
2k views

How to program light sensor to follow moving light using NXT

Cannot figure out how to simply program Lego Mindstorm NXT robot to follow another moving robot that has a bright LED light attached to it. Currently my programme looks like this:
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1answer
143 views

NXT brick not executing programs correctly

I have an issue that I am hoping someone might be able to resolve: We're using Mindstorms in the classroom as part of a STEM program, and have one NXT brick that won't execute programs correctly. The ...
4
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1answer
60 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 ...
4
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1answer
235 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 ...
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2answers
3k 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 begins....
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1answer
617 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 ...
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1answer
229 views

Is code written for NXT bricks compatible with EV3 brick (for Johnny 5 building)?

My son is mad on the robot from Short Circuit (Johnny 5) and I want to build robots with him. We have a copy of Daniele Benedettelli's "Creating Cool Mindstorms NXT Robots" and I was planning to start ...
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2answers
387 views

Faulty NXT Motor

I have a motor that prevents the program from running. It simply allows a few slow movements forward with stops in between. It seems very stiff to rotate manually. Any way I can repair this motor?
4
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2answers
568 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
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1answer
584 views

Scan objects while moving?

I'm using leJOS with an NXT robot. I want to scan the distances of objects from my robot. While rotating the Ultrasonic sensor from right to left, I would like to find out which object is closest to ...
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0answers
483 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 ...
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3answers
6k 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)
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3answers
2k views

Are NXT Light sensors compatible with EV3?

I would like to use the NXT light sensors my EV3 brick. I don't have enough light sensors as I need 2 for each robot (per set) and it only comes with one. However, I have a lot of NXT sensors. Will ...
3
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2answers
123 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) ...
3
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3answers
104 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'...
3
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2answers
545 views

How to get leJOS to run on macOS Sierra

I am working with an eclipse plugin that requires it to run 32bit Java 6 on it and I do have Java 6 on my computer but when I run the program I get this error. Error: This Java instance does not ...
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2answers
347 views

LEGO Mindstorms NXT projects

I have a LEGO Mindstorms NXT set and since I bought it I almost never used it. Sometimes I think I could do something interesting with it, but I usually either feel like just copying a previous made ...
3
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2answers
4k views

What software should I install for NXT on OSX El 10.11.2 Capitan?

Sorry, I am brand new to Mindstorms and a bit overwhelmed. I bought an NXT robot over Christmas and am confused what software I should install. I installed the EV3 software. The bluetooth doesn't work,...
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3answers
3k views

El Capitan OS X and Nxt v2

I am running El Capitan OS x, and I have a nxt v2 brick. Is there anyway I use them together? The nxt installer crashes and the ev3 software will not update the firmware on the brick. Do I have any ...
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1answer
234 views

fgetc() moves pointer one step forward

I have opened a file using handle = fopen("rw.txt"). The file consist of 3 values which is separated with spaces ex: 12 23 34 using isspace(fgetc(handle)) Problem here is that fgetc() increments ...
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1answer
1k 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?
3
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1answer
171 views

Are variables always global with NXT?

New to NXT software. What I'm trying to do is get my motor to go one of 5 distances, but I'm not sure how to choose between those actions. What I thought of was setting 5 variables to 5 sensors. The ...
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1answer
448 views

Connection between two NXT bricks

Is it possible send information from BrickNXT_A to BrickNXTB_B? For example I have a touch sensor connected to IN_1 of Brick_A and I want send the result of the sensor status (1 or 0) to Brick_B. If ...
3
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1answer
155 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 ...
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1answer
4k 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 ...
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2answers
660 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?
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1answer
138 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 ...
3
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1answer
490 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 ...
3
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1answer
124 views

NXT Display is messed up

I have an NXT 1.0 and the LCD display only displays noise. Anyone know how to get one replaced or repaired? Thanks
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1answer
68 views

I need an NXT motor adapter

I'm trying to get an NXT motor adapter to this that I'm getting: If you don't recognize this, the parameters said : 80mm 2000 ±10% RPM 28.89 CFM Rifle 20.9 dBA Please tell me what this is called ...
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1answer
239 views

How to measure green/blue reflected light on EV3?

As I know there is no way to turn on green/blue reflected light on EV3 color sensor. Is there a way to do it using NXT color sensor and EV3 controller? Or the only way is to use NXT controller ...
3
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1answer
408 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 ...
3
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1answer
759 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?
3
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1answer
162 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 ...
3
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2answers
161 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 ...
3
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2answers
70 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 ...
3
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1answer
419 views

LEGO EV3 on Chromebooks

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 ...
3
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1answer
120 views

identifier expected?

What identifier is expected here? #import "rw.txt" rw task main() { if(rw != NULL) { OnRev(OUT_A,75); Wait(100); } } Error: # Error: Identifier expected I don't seem to ...
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2answers
185 views

I need a block that can combine a movement program with NXTbee radio

I am a student. I am working on a science project using LEGO Mindstorms robots enhanced with NXTbees creating a mesh network. My engineering mentor has me using LabVIEW. I am trying to find a block ...
3
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2answers
654 views

Connecting a webcam to NXT and streaming a video

is it possible to connect any webcam or modify it in such a way that the NXT controller will be able to stream a video to another computer? Iv'e seen there are special sensors for it, but I can't ...
3
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1answer
687 views

NXT program not running

We have multiple NXT Bricks. We can read sensor data and motor degrees from View. Some are running FW 1.31, others FW 1.28. When we try a simple 5-step NXT program, the motors will not turn. We tries ...
3
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1answer
483 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 ...
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2answers
618 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
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1answer
455 views

No response when controlling the Mindstorms EV3 brick over Bluetooth

I am trying to control the EV3 using direct commands over a Bluetooth connection. There are no issues pairing the brick with a PC or phone, and opening the serial connection works fine, but sending a ...
2
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1answer
353 views

List of parts to buy for to “upgrade” existing Mindstorms NXT 1.0 to Mindstorms EV3 set?

Is there a list of parts available I need to buy to "upgrade" an existing Mindstorms NXT 1.0 (8527) set to a Mindstorms EV3 set?
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2answers
382 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 ...