5
votes
2answers
247 views

Is it possible to create a differential if I don't have it as a ready to use element?

I have numerous gears, axis and other elements from different Lego Technic sets. I wonder if using them I can make a kind of a differential like this? If not, how can I implement similar ...
0
votes
3answers
122 views

Are there any LEGO movie/game posters?

I'm trying to find some posters for my childrens room and everytime I find something on EBay etc .. they are all A4 or A3 :( I'm guessing it's a simple process as getting a nice quality version image ...
0
votes
0answers
52 views

Parallel Direct Commands to an NXT

Is it possible to send multiple Direct Commands to an NXT brick in a quick succession, and the NXT brick will execute them as soon as it receives them which will look like they are happening in ...
1
vote
0answers
547 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
vote
1answer
68 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?
2
votes
1answer
148 views

Biggest European LEGO event?

I was wondering if there is a big European event where new sets and custom sets are shown, and maybe deals on sets or pieces, something like an E3 for LEGO or something similar. I looked on Google but ...
0
votes
0answers
56 views

Problem in connecting the NXT brick via bluetooth

I am trying to control my NXT brick via Bluetooth but I cannot establish a connection. Although I am able to establish a Bluetooth connection from the laptop to the LEGO using a Bluetooth dongle, the ...
4
votes
2answers
244 views

Help identifying Lego Set from bags!

I visited Toyrus in Paris recently and bought several lego sets for my son. Mostly, Star Wars sets. In each case, we brought the manuals and the cardboard boxes so that he could assemble them. ...
2
votes
2answers
260 views

Turn a tank a specific number of degrees

I don't have a gyro sensor so that's not a possible solution (until I purchase one). I figured I'd just do the math on this one. What I'd really like to know are: The circumference of the ...
3
votes
1answer
90 views

Battery Acid Dust Issue

I was recently digging through some old boxes looking for old LEGO bricks I had as a kid. In two of the boxes I found old double A batteries that had busted (the boxes were in a building that has got ...
1
vote
1answer
226 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 ...
6
votes
1answer
219 views

Why are 2/3 height bricks with studs on the side 2 studs deep?

This question is regarding the 2/3 height bricks with studs on the side. The two that I am aware of are 99206 and 87609: If you haven't seen them before, these are functionally somewhat similar to ...
7
votes
1answer
139 views

What plastic do Quatro blocks use?

I recently picked up a heap of Quatro blocks, and noticed that the plastic seems to be much softer than the normal ABS-based Lego and Duplo blocks. Does anyone know what kind of plastic was used in ...
1
vote
1answer
196 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 ...
4
votes
1answer
158 views

Need help fudging a group in 8039

So, I'm building "8039 Venator-class Republic Attack Cruiser ™ Star Wars TM" and I've hit a snag. I need help fudging the instruction from page 76 of book 1 for that set (see picture below). I'm ...
3
votes
1answer
85 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 ...
13
votes
2answers
291 views

What software was used to create the LEGO Movie?

So I've just seen the LEGO Movie and I was amazed at the such intricate details of all the minifigures and sets. I was wondering if anyone knows what software was used to create the film. Animal ...
6
votes
1answer
350 views

Emmet's couch model in official sets different than the movie?

Lego's official building instructions for The Sea Cow set include building instructions for building Emmet's couch from The Lego Movie. Are there differences between this model and the one actually ...
5
votes
2answers
167 views

Older sets in The Lego Movie?

Are there any existing/hisorical complete sets (for example: buildings, vehicles, etc) featured in The Lego Movie? Sets created specifically for the movie do not count. For example, the bad cop's ...
4
votes
2answers
185 views

Can you identify this yellow crane?

Can you identify this one? It's part of a series of models I had as a kid that I want to take apart for my own kids now, and I'm looking for the original instructions.
4
votes
1answer
120 views

Can you identify this model of a yellow truck?

It's part of a series of models I had as a kid that I want to take apart for my own kids now, and I'm looking for the original instructions. Can you identify this one?
1
vote
1answer
303 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 ...
0
votes
0answers
40 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 ...
3
votes
2answers
159 views

Identify these (Technic Steering) parts?

These three parts do not have part numbers on them, but it is clear they are LEGO parts (they have LEGO printed on them). I am trying to track down the set that these belong to, or at least a part ...
7
votes
3answers
315 views

What techniques can be used for laying plates at 45° angle?

I've seen a number of techniques for laying individual elements at 45° angles, but I need a consistent method for laying down larger plates at 45 degrees while maintaining close contact with the base ...
2
votes
1answer
178 views

EV3 Block problems?

I don't see what is wrong with the way i made my program. It looks like this. The idea is that in the while loop [01] shall the robot move forward until it see something brown. If it see ...
5
votes
2answers
239 views

Personal part collection on the web (Bricklink or alternative)

I started using Brinklink a few months ago and although I really like it the interface is terrible. I am looking for a specific feature but don't know if it's unsupported or just I cannot find it. ...
1
vote
1answer
93 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
vote
2answers
355 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.
3
votes
1answer
51 views

How to minimize the impact of erroneous sensor readings?

A group including myself are using the Lego Mindstorm kit to design a robot that is going to compete in a school competition. However, the sensors aren't as reliable as we would like them to be, ...
3
votes
2answers
291 views

Is it possible to change the OS in the EV3 Mindstorm Brick

I'd like to know how to change the OS embedded into the EV3 mindstorm Brick ( list of it ). For example, would it be possible to replace the existing one by a linux release without losing any ...
0
votes
0answers
64 views

Can Mindstorms EV3 communicate using protocol 802.15.4?

My aim is to make the robot communicate using protocol 802.15.4 through a USB dongle 802.15.4 over 6LoWPAN. The robot has to be able to get information from TelosB. I wonder whether this possibility ...
6
votes
2answers
208 views

How to remember initial position of a robot and return to it

I have an EV3 robot with motors, like a car, that can move forward/backward and left/right and have some sensors attached. I want it to remember its initial position by remembering all the movements ...
2
votes
1answer
276 views

Use iPhone camera as an input sensor for EV3

As EV3 has Bluetooth builtin as well as iPhone too, is there a way to connect them somehow so that iPhone could send data from the camera via Bluetooth to an EV3 brick? As a more general question, ...
0
votes
1answer
40 views

I can’t run the NXT 1.0 program software on my Mac version 10.6

How do I fix this? I run the install program, restart my computer, go to the “Applications” folder and there is a folder named “LEGO MINDSTORMS NXT”. I open the folder and there are three “options”: a ...
2
votes
1answer
411 views

Unhappy minifig faces [duplicate]

I dislike how many current sets and mystery figures come with negative expressions such as sad, angry, and mad. Sure they have their place and purposes, but I'd prefer my son not have so many grumpy ...
11
votes
0answers
143 views

How to Decipher Lego Building Instructions Filenames?

On the official site for downloading lego instructions, the filenames are often quite cryptic, and many sets have as many as six different files you can download and sometimes it's hard to tell which ...
2
votes
1answer
80 views

Retrobrite cleaning on old cellulose acetate bricks?

Is Retrobrite (cleaning with hydrogen peroxide, oxyclean, sunlight) effective or ineffective or, worse, downright destructive on old cellulose acetate bricks? My understanding is that method of ...
6
votes
2answers
93 views

Is there a way to buy printed pieces to replace stickers?

I don't like stickers on my lego models. Does lego sell pieces with custom printed designs, so I can have newer lego models with all printed pieces like the old days? If not, how do I print designs ...
6
votes
1answer
395 views

Lego plate with square holes?

I have some white plates with square holes on the underside. I'd almost think they were some imitation brand if they didn't have lego stamped on the studs. Can anyone tell me the history of when ...
5
votes
1answer
321 views

Small lego train sets on narrow gauge track?

Will Lego sets such as "LEGO Christmas Train" 40034 or "Emerald-Express" 31015 run (manually) on narrow gauge lego track? These sets use a wheelbase that is only 4 studs wide and wheels that have a ...
3
votes
2answers
214 views

How to differentiate Cellulose acetate vs ABS LEGO bricks?

If one had a large tub of old LEGO brick, with some pieces going back to the 1950s, but all mixed together, are there any distinguishing features or appearance to the 1950s cellulose acetate bricks ...
6
votes
2answers
155 views

Massive collection given to our charity

I work as a volunteer for Cancer Research U.K. We have been donated massive amounts of vintage Lego. Could you please advise how to sell.
5
votes
2answers
100 views

Opaque bricks with no center post?

What is the purpose of 1x2 red bricks without a post inside the brick? I know they often leave out the middle post on transparent bricks to make them look more window-like, but what about in opaque ...
1
vote
1answer
178 views

Cell phone holder [closed]

Is there build instructions for an interesting cell phone holder that can be placed on a table? The holder needs to hold the phone upright and allow it to be charged at the same time.
2
votes
1answer
166 views

Will Lego Caboose (10014) work with Lego Cargo Train (7939)?

Will at the older Lego Caboose (10014) work with the Lego Cargo Train (7939)? I wonder if it will fit the newer track and if the magnet couplers will still work?
1
vote
1answer
107 views

What products, if any, have ever been recalled by Lego?

The question says it all. Have there ever been any recalls of products by Lego? If so, what were they?
1
vote
2answers
284 views

Creating a native EV3B block

I'm trying to create a native block for a hardware sensor. I've got it working pretty well, but can't get it to show up in the "port view" as anything but a sound sensor. I really need the live view ...
2
votes
1answer
76 views

Trouble finding plastic storage bins for MOCs built on 48x48 stud (gray) baseplates - Ideas?

I have a number of models built on gray baseplates that are that are proving to be difficult to store/transport. Lidded plastic bins would be ideal, but I'm having a lot of trouble finding bins with ...
2
votes
2answers
162 views

On what plane is 6912 Super Soarer based?

The set 6912, Super Soarer, features a yellow jet plane. My first thoughts were towards the Harrier, but it has exhausts on the tail, which the Harrier doesn't have. On what plane, if any, is it ...

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