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242 views

Unable to turn on NXT. Completely Frozen

I recently downloaded a file on my NXT and when I used it, it didn't work. The motors started to make sounds like they were jammed, one stuck and now it won't even turn on. I tried the reset button ...
2
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0answers
1k views

Bluetooth connection to EV3 from Java on Linux/Android

I would like to connect to my EV3 from PC (and then Android) via Bluetooth. I was able to connect to NXT with LEGO-MINDSTORMS-MINDdroid which uses direct LCP commands but as far as I know the ...
2
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0answers
369 views

How would one add custom made 3rd party pieces to LEGO Digital Designer?

There are a number of producers of custom LEGO compatible pieces, how would one add such a custom piece to the LDD software?
2
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0answers
67 views

How to pass an unknown type as a function parameter in NXC?

I was trying to do it as in a regular C, with void*, but it didn't work. Is it possible to pass it in NXC? If it is- how to do it?
2
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0answers
316 views

LEGO Model to 3D Converter

I've created a LEGO figure using a great number of ball joints for maximum flexibility. The pre-finalized version of this model, before I got the legs working the way I wanted them, is shown in this ...
2
votes
0answers
630 views

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?
2
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0answers
188 views

NXT (NXC) Programs are too slow

I am using Bricx Command Center to write some NXC code for a side project. I am working with the MindSqualls C# Library in Unity and am trying to figure out some ways to use the NXT robots in an event-...
2
votes
0answers
355 views

How to determine orientation of a EV3 gripper?

I have built the EV3 Gripper using the manual. I am programming an ev3 brick using ev3dev. I need to determine the angle/direction/orientation of the robot programmatically, before I can issue a ...
2
votes
0answers
91 views

HiTechnic Color Sensor analog

HiTechnic sales support said that HiTechnic color sensor hasn't been manifactured yet. Currently it's out of stock in HiTechnic shop. Is there any analog of this sensor except NXT/EV3 color sensors?
2
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0answers
334 views

What are the steps in installing the EV3 block developer Kit?

I've downloaded the block developer kit. How do I incorporated into my Mindstorms software?
2
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0answers
138 views

Unable to turn on the EV3

I just can not turn on the EV3 with the SD card. I only turned on it twice. The EV3 stops at [-leJOS EV3] UI and does not go to the next step. I charged the battery, reinstalled the software inside ...
2
votes
0answers
384 views

How do I control one EV3 using another through bluetooth and LabVIEW?

I have LabVIEW 2014 and I'd like to control make one EV3 move forward using another through bluetooth using LabVIEW, and I don't want to have to use the computer as a relay. How do I do this?
2
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0answers
55 views

Block Platform parameter is not instantiated in Simulink

I used Simulink to write a program for LEGO Midstorms NXT. I can post the design if needed. The problem is that when I want to run it on hardware, it gives the following error: Lego mindstorms NXT ...
2
votes
0answers
205 views

After adding a MyBlock icon to the EV3 palette of MyBlock icons, how can the new icon be associated to an existing MyBlock?

After following the advice given in adding a MyBlock icon to the EV3 palette, can the icon be associated to an existing MyBlock? Something better than copy/paste the contents of the existing MyBlock ...
1
vote
0answers
73 views

What ist this black 2x2 drivers torso? part without head, where/which set is it from? FOUND IT

FOUND IT its LegoBrick, Modified 2 x 2 Racer Driver No Head Item No: x351 how can i delete the Post? I found this Black 2x2 Piece which looks like a drivers torso but have no idea where it comes ...
1
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0answers
17 views

create/edit subvi's in ev3- g (labview) developer mode

How can i create/edit subVIs in the ev3-g developer mode? I can open ev3-g blocks in the "LabVIEW" mode and Display subVI Details, but not edit or create subVIs itself. Any idea how to do this?
1
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0answers
43 views

Custom extension cables for Light Stax?

Recently, I got the S-12012 Light Stax kit with 50 (!) light bricks. They are different from those described in this question, but they are much cheaper, colorful and with blinking/pulsating effects. ...
1
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0answers
24 views

EV3 Ultrasonic Sensor programm

How can I download the ultrasonic sensor and open it? I want to open it on a laptop running Windows 7. Which program must I download?
1
vote
1answer
77 views

My DUPLO railroad engine stops after 20cm

My DUPLO railroad engine stops after 20cm moving. I suppose the sensor in the front axle is damaged. So is it possible to repair it?
1
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0answers
42 views

Makeblock and LEGO PF cable synthesis

My 10yo son and I have ventured into the realm of taking our LEGO hobby up a notch with robotics. We have built the makeblock mbot and adapted LEGO bricks and want to incorporate the Power Functions ...
1
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0answers
101 views

How to deal with hydrogen peroxide after de-yellowing?

I was able to remove the annoying yellowing effect from old white and lightgray bricks wiht the usage of hydrogen peroxide. With great results I have to say . Now I wonder what to do with the ...
1
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0answers
34 views

iNXTG app 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 ...
1
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0answers
56 views

Why are Printed Lego Catalogues Distributed Late?

Today is January 29, 2019, and toy stores in Germany (at least a couple that I've checked) still have only some remainders of 2018 July - December catalogues. 2019 January - June catalogues are ...
1
vote
1answer
104 views

What is the appropriate way to request a creator to add more of their designs to mochub?

There are some brilliant LEGO creators with many designs on YouTube out there who choose to remain anonymous- who put some of their designs on mochub but not others. (In particular ones relating to ...
1
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0answers
70 views

Function in EV3 Basic

I have been programming in basic for ~30 years. I want a translation of the following code into EV3 Basic: function index( x , y ) return x + y * ( maxx , + 1 end function sub look for i = 0 ...
1
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0answers
229 views

What LEGO set is this from?

Can anyone tell me which set this is from? That would be great.
1
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0answers
31 views

Help regarding importing into LDraw

I just have a quick question regarding importing an .obj file into LDraw. I originally put a an .obj file through Brickr and exported as an .obj. Now, I want to import into LDraw in order to visualize ...
1
vote
0answers
55 views

Is there a way to move items from quote back to basket?

I requested a quote on a set of parts. Got it, it was too expensive in terms of shipping, but it turns out I had only 18g of parts, when shipping would cover up to 100g. Is there a way to move parts ...
1
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0answers
155 views

LEGO Mindstorms Spik3r won't move

I built my Spik3r as usual, but it wouldn't run when I tried to program it. I checked the wheels and the legs and everything seemed fine. I even looked back in the instructions, and redid it. It still ...
1
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0answers
106 views

EV3 Home edition for mac missing import block option

I'm running EV3 HE 1.3.1 on mac Sierra 10.12.6, and I'm unable to import the ultrasonic sensor. When I open tools -> import block -> browse, the open button is always disabled, it does not allow me to ...
1
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0answers
231 views

Why can't I install the NXT software?

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 ...
1
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0answers
116 views

myblock for a proportional gyro turn that randomly fails when in a larger program

I have a proportional gyro turn myblock that fails when played in a longer program. The myblock works perfectly fine when played by itself. The most confusing thing is that the way it fails seems to ...
1
vote
0answers
780 views

LEGO Mindstorms EV3: Camera recommendation for lane 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 ...
1
vote
0answers
54 views

Servo steering with 88004 motor and 8878 battery box?

I would like to build a servo steering (not remote controlled). Besides the direct physical connection between the steering wheel and the wheels, the rotation of the steering wheel would be used to ...
1
vote
0answers
275 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 ...
1
vote
0answers
150 views

Any cheap Technic set can have more types of parts?

I want to start build a very module like GBC mini loop 001, but when I check the part list it is very hard to get. How should I get started? BTW, I got a very big set 42055 and wanted to be able to ...
1
vote
0answers
98 views

Linear Actuator Clicking

I have just finished working on a mock-up landing gear deployment mechanism, keeping it as simple as possible of course. However one thing that I cannot seem to get rid of, is the small linear ...
1
vote
0answers
475 views

EV3 connection problem via USB on Windows 8.1

I am using LEGO EV3 on windows 8.1 eclipse Neon. When I try to launch the class as a LeJos application I get this error. IP address is /10.0.1.1 Creating the jar file or uploading the program failed ...
1
vote
0answers
244 views

LEGO Mindstorms IDE on macOS flickering

I experience a screen flickering in the LEGO Mindstorms program on macOS when the mouse pointer is moved across the window. The screen flickering is present for all normal users but not the ...
1
vote
0answers
125 views

Are there any additional robo center downloads for the nxt-g software?

It would be nice if there were additional entries under the animals, vehicles, machines and humanoid tabs. Supposedly there was some official LEGO web component to the software which appears to be ...
1
vote
0answers
718 views

NXT software V2.1 runtime installation error in windows

My system configuration : Windows 7 Home Premium 64-bit Service Pack 1. When I try to install NXT software v2.1, at the beginning itself I am getting the error below: Microsoft Visual C++ runtime ...
1
vote
1answer
125 views

Why does the Gyro Sensor not work correctly in Virtual Robotics Toolkit?

I somehow found out about Virtual Robotics Toolkit and when I did, I decided that it would be great software to use for Lego League. Later in my research, I found that it automatically had the newest ...
1
vote
1answer
444 views

How to receive response from direct_command_reply from EV3 using Python?

I've established and tested a Bluetooth connection (by playing a tone) between EV3 and Mac running Yosemite with Python 2.7.11. I used file write as in bt.write(tone) in Python to play the tone ...
1
vote
1answer
428 views

Bluetooth communication between computer and nxt using RobotC

I'm thinking starting a project involving controlling the movement of a NXT robot from the PC using RobotC. Is it possible? Does anyone have a simple code solution?
0
votes
0answers
8 views

getting startet: optimized starting point to step into Arduino-izing LEGO Technic

this is the narrative of a little learning curve. In this great forum i got much help to take the right way - and to step into the right direction with an appropiate base for arduino-izing a LEGO-car....
0
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0answers
30 views

T-R3X the look My Block problems

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.
0
votes
0answers
16 views

my nxt is not updating it says it cant locate the nxt

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 it ...
0
votes
1answer
44 views

Will the LEGO MINDSTORMS EV3 software run on macOS 10.15 Catalina

I'm currently running macOS 10.14 Mojave and I see this warning when I start the EV3 programming software: Will it stop working if I upgrade to Catalina? Is there an alternative?
0
votes
0answers
29 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 ...
0
votes
0answers
14 views

changing ev3p file back into an ev3 project file

how do I change an ev3p file into an ev3 project file. Everytime that I click on the ev3p file to open it, it turns up as text in notepad.

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