1
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1answer
295 views

Is this piece some kind of rare/modified 200?

I have this piece which vaguely resembles 200, Technic Rack Winder Axle (Rebricked) but one end is different. It is 5 studs long, axle is 1 stud long, the gear lies between 3rd and 4th stud and the ...
1
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1answer
2k views

How can I get replacement stickers for a new lego set? [duplicate]

I recently bought a Lego Fire Boat (set number 60005) but for some reason, when I opened the box and shook out the contents (as I normally do) no sticker sheet fell out. I was wondering if you could ...
1
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1answer
45 views

Why is there no set with much RC Straight tracks?

after visiting many Lego events (brickmania, antwerpen, BE), I wish to expend my train layout much more than adding a box or two of 7499 ... Why does Lego didn't released a set with, for example 24 ...
1
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1answer
30 views

Can additional MyBlock icons be added to the EV3 palette of icons available in the MyBlock builder?

I'm a big believer in using MyBlocks when using EV3. For FLL teams, every robot needs to move forward, backward, turn right, turn left, arm up, arm down. Even before a robot is built, those MyBlocks ...
1
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1answer
118 views

Is it possible to connect EV3 and NXT bricks like master/slave configuration via bluetooth?

Can I make a Bluetooth connection between LEGO EV3 bricks and LEGO NXT bricks? and If it is possible how to handle the software to make a chain between them?
1
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1answer
104 views

How to use printed bricks from set 850425 into LDD?

I would like to know if it is possible to use the printed tiles (those with letters) from the 850425 set into the Lego Digital Designer (LDD)? And if it is possible, the next question is "how" of ...
1
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1answer
81 views

Programming RCX in 10.9 environment

My school has 15 RCX robot kits that this year has just been sitting because all the old computers with OS X 10.4 are now gone and we are using OS X 10.9. I would like to run the original RoboLab ...
1
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1answer
70 views

What do the V# codes represent in the LEGO shop?

The online LEGO shop references products with a V# code at the end, like this: What is the meaning of this code?
1
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1answer
357 views

EV3 Brick Error Symbols?

I am currently developing an EV3 robot that sorts colored technic beams. However, the brick will only run part of the program and then generate a strange error code on the brick's screen. The error ...
1
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1answer
519 views

How can I use multiple switch options in Lego Mindstorms EV3 software?

What I see is just a simple if/then/else. What I am looking for is to be able to add multiple options, more than yes/no. I use a motor as a switcher, so I rotate it to some position and measure its ...
1
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1answer
101 views

What is the input to the Speed Regulator?

I wanted to buy a transformer for the speed regulator, so based on this image, I bought a transformer with 12V DC output. It works. However, discussing this with a fellow AFOL, he pointed out that ...
1
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1answer
90 views

Advanced coloured lines following robot

I am trying to build a coloured lines following robot, and I would like to know what kind of sensors do I use for my robot to differentiate and detect several different coloured lines?
1
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1answer
210 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
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2answers
784 views

Can I program EV3 with the NXT-G IDE?

I am helping prepare a team for First Lego League and the new EV3 kit is what will be used. We are currently teaching the kids with NXT 2.0 kits that we have using the NXT-G IDE. It appears that we ...
1
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1answer
2k views

What are the size of Lego Technic Parts?

I'm creating a LEGO Mindstorms catalogue for a school project. I measured the LEGO parts and I made an average size. My goal is to create new parts with a Rapid prototyping machine and I wanted to ...
1
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1answer
205 views

What are the possible differences between LEGO elements?

I'm in a technical school in the Netherlands and we received the following questions for an assignment: What are the other possible differences between LEGO elements? What are the different forms of ...
1
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1answer
23 views

Trouble with Commander app: Using buttons to control motors

I'm having trouble with the Commander app for Android. I've put an EV3 into set 8448. I'm using one of the large motors for propulsion and a medium motor for rack and pinion steering. I don't have the ...
1
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1answer
71 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
53 views

Lego EV3 - sending direct commands over RFCOMM Channel (Objective-C, Xcode)

I successfully open RFCOMM Channel to Lego EV3 brick with code: IOBluetoothDevice *device = [IOBluetoothDevice deviceWithAddressString:@"xxxxxxxxxxxx"]; IOBluetoothRFCOMMChannel *rfCommChannel; ...
1
vote
1answer
31 views

NXT shuts down USB on Mac after connecting motors

After successfully connecting our NXT to my Macbook Air and upgrading firmware to 1.31 we built our first robot. We plugged in the motors to ports A, B & C and now we get an Error stating that USB ...
1
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1answer
53 views

Is it possible to use a LEGO NXT ultrasonic sensor for a LEGO train crossing?

I was looking at LEGO NXT components, and I found the ultrasonic sensor. I was wondering that if I put off to the side of the track, the nose of my train would activate the sensor, thus operating the ...
1
vote
1answer
71 views

Teleoperated arm trouble

I have built a robotic arm with the lego Mindstorms ev3. My goal is to control its motion via teleoperation, that is , to have a gyro sensor strapped onto my arm and have the robot mimick the up and ...
1
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1answer
127 views

What part can I use to get the connection

This is what I have.. Would like to connect the long "thing" to the square base.. not sure which part will give me a angled elevation In case you are wondering what I am trying to do.. this is what ...
1
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1answer
401 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?
1
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2answers
160 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
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3answers
305 views

My Blocks with return parameter

I have the retail EV3 kit and have created a function with in and out numeric parameters. While using the [in] params seem quite straight forward, it seems that I can only set the [out] param once. ...
1
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1answer
39 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
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1answer
71 views

How can I make product suggestions to TLG?

I'm sure lots of is have had ideas for products, parts, sets, themes or services that we'd like LEGO to produce. What are the best ways of proposing them to TLG, and of persuading them to take on our ...
1
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1answer
130 views

Link 1 x 6 with Stoppers Part 2739b

Will Link 1 X 6 connect to Liftarm 2 Axle Holes and Pin / Crank (Part 33299)? The Link will be attached to a coke can, that needs to drive a crankshaft. 2739b from Peeron 33299 from Peeron
1
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2answers
184 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
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1answer
229 views

Programming with Lego Mindstorms EV3

I know this question was asked in the past, but I want an up-to-date answer. What is the best way to program with the NXT with a oriented object programming language? Ideally C#, C++ or Java (maybe ...
1
vote
1answer
704 views

API for Android or iOS connecting to EV3 by bluetooth

There is official API for Windows, WindowsPhone8 and WinRT https://legoev3.codeplex.com/ it lets you connect to EV3 brick and control it remotely from your WindowsPhone. Are there any libraries ...
1
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1answer
188 views

RGB sensor HOWTO use?

I've got an RGB sensor (this one with the three LED thingies) and wonder how to access it using NXC. I know I can SetSensorColorFull(IN_1); and then access it using ReadSensorColorEx or, for ...
1
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2answers
814 views

Where can I download the EV3 education edition software?

I have a site license but I'm not able to find the download for the software anywhere. Any help would be greatly appreciated.
1
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2answers
224 views

Types of instruction manuals

I noticed there are 4 different types of instruction manuals (at least for large sets): Type I: Similar piece colors are not very distinguishable (especially Dark Gray and Black). Some building ...
1
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1answer
230 views

EV3 Event Delegation

My problem is that the robot, which should just remain in the program until the Escape Button is pressed, just stays in the while-loop. The current code looks like this: using System; using ...
1
vote
1answer
403 views

“The type or namespace name ”Brick“ could not be found” Xamarin Studio with MonoBrick

I managed to establish a wifi connection with the Ev3 Brick via WinSCD and am programming the Ev3 with XamarinStudio/Mono Develop(http://xamarin.com/studio "XamarinStudio"). My problem is that "The ...
1
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2answers
173 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
330 views

Price of EV3 education software

After looking around on the Lego Education website, I failed to find the price of the education software. I currently have the retail version of the software, but I want the extra features and blocks ...
1
vote
1answer
184 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
219 views

Buying Individual MiniFigures

I was big into LEGO bricks when I was a kid (now 33), and now my son is getting into them. I'm a huge collector of things (not a hoarder, a collector), and, like father, like son, he wants to collect ...
1
vote
1answer
174 views

What are the codes for the LEGO advent game? [duplicate]

We don't have the calendar but my 6 year old really enjoy?s the game online. We have the first 2 codes.What are the next codes please
1
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1answer
290 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 ...
1
vote
1answer
2k views

Getting the IR Tower working with RCX and RobotC [duplicate]

Possible Duplicate: Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / Windows XP driver Trying to get RobotC to work with my old RCX 2.0. I'm running windows 7 64 bit. I've connected the IR ...
1
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3answers
12 views

Is there a 2x12 size Lego Brick?

I am designing a rather large Lego structure and I could swear that I have used 2x12 bricks (not plates) in purchased sets. I know there is a 2x12 plate in existence but don't see any bricks online ...
1
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1answer
51 views

EV3 RMIregulatedMotor Regulation Problems

I have problem with regulation of the motor when I control EV3 with Bluetooth. Here is the code: RemoteEV3 ev3 = new RemoteEV3("10.0.1.1"); ev3.setDefault(); RMIRegulatedMotor leftMotor = ...
1
vote
1answer
64 views

How to close color Sensor properly?

I want to get data from the color sensor with Bluetooth. I can get data but when the program terminates, the color sensor dose not close even though I call function close() on the color sensor. The ...
1
vote
1answer
133 views

Direct command lego ev3 [closed]

Is there any documentation about direct command bluetooth of EV3? Thanks, regards!
1
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0answers
87 views

What method do you use to figure out what set you have? [duplicate]

This question really got me thinking about this: I bought a second hand pack of pieces and it looks like it may be a specific set How do you even go about figuring that out? How would you even start? ...
1
vote
1answer
149 views

Good EV3 iBook for programming or building

I am a participant in a Lego mind storms competition soon using EV3. I would like to know if there are good, free iBooks for me to download (PDF or iBook from the apple iBook store). Preferably the ...

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