12
votes
3answers
4k views

What's the best way to link two (or more) LEGO Power Functions (PF) train motors together?

Last Christmas I built an extended Emerald Night train to run around the tree. To get it to work I had to add a second Power Functions motor. I tuned both IR receivers to the same frequency and slowly ...
1
vote
0answers
40 views

Is there an alternative replacement motor piece for 4.5 V Trains?

Is it possible to find on a market a simple 4.5V electric motor, that can be installed into LEGO Part 564c01? The service pack No. 5000 is more and more difficult to find.
1
vote
2answers
63 views

RCX Windows 10?

I am a teacher and I use for years Lego RCX in science and technology . Now that I have Windows Surface Pro 2 , I would like if possible to use my RCX robotics kits on windows 10 ? Is that possible ?
0
votes
0answers
29 views

Lego brick management tips [duplicate]

My 4 year old son loves to play with Lego and we encourage him. We built a few sets together and he mostly builds stuff from his own imagination. He likes to build new sets with us and to follow the ...
4
votes
2answers
1k views

Is there a free EV3 simulator (virtual machine) for the Mac OS?

I recently saw this question on a virtual EV3 machine. From the video, I felt that this software will be great. However, I don't have the budget needed to buy a licence. Is there any alternative to ...
5
votes
2answers
75 views

How to store a matrix of values and pick out certain elements and compute the difference?

I at the moment am trying to make an EV3 robot which is capable of following a gradient decent method. The idea was to store a discretized function in a 2D matrix, and make several lookups in that 2D ...
4
votes
3answers
797 views

Pick A Brick delivery times

I am about to order some bricks using the online Pick A Brick service. Unfortunately, its delivery time information is confusing. In the right column of the checkout page, it says: Your item will ...
0
votes
1answer
36 views

Order Number Problems [closed]

I think something is wrong with the email I use and for whatever reason i didn't get the email with the order details after I ordered. I quadruple checked that I got the email right before I typed it ...
1
vote
4answers
6k views

Where can I download the EV3 education edition software for free?

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
36 views

Shipping to Turkey

I am trying to order different single bricks with Pick a Brick system. It seems there is no shipping options to Turkey. I already picked around 32 Euro pieces but couldn't be able to change the ...
9
votes
1answer
96 views

Dichotomous key for identifying / discovering LEGO pieces?

Is there a dichotomous key available for looking up LEGO pieces by progressively answering information about their characteristics? It doesn't necessarily need to fit the strict definition of a ...
2
votes
1answer
137 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?
5
votes
3answers
4k views

Who else produces Duplo-sized blocks?

I gather that Mega Bloks Mini Bloks are the same size as Duplo, and are compatible with it. Do any of the other major brick manufacturers make similar bricks? Knowing the possibilities can help when ...
5
votes
2answers
433 views

What is the special Lego Movie 1x1 element shown in the Channel 4 documentary 'Inside Lego at Christmas'?

I recently watched the UK Channel 4 documentary 'Inside Lego At Christmas' and in it, one of the employees of Bright Bricks showed a tall 1x1 element that he described as a brick that Lego came up ...
0
votes
0answers
38 views

How can I separate Bionicle 2016 heros body?

I do not know how can I separate the torso pieces, I tried many times but still don't have success, I need your help
0
votes
0answers
113 views

Can you help me identify what Lego set this May Belong to?

Can anyone help me identify what lego set this is from? My son has it half built and we cannot find the instructions and the bricks have been mixed with his other lego. Thanks!
2
votes
2answers
264 views

Issues connecting the EV3 on Windows 8.1 64bit

I have got a computer with Windows 8.1 64 bit and I have installed LEGO Mindstorms EV3 software Home edition and tried to connect the EV3 brick to the computer, but the brick didn´t connect to the ...
6
votes
2answers
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 ...
0
votes
2answers
56 views

Lego Cleaning/Sterilisation [duplicate]

I am just looking to see if anyone knows of a lego product that exists that allows you to sterilise your lego using your dishwasher. Thanks
1
vote
1answer
35 views

Can I change the spec of a MyBlock [duplicate]

If I create my own block (MyBlock) with one param and later discover that I should have used 2 params or different icon or something like that, what do I do? Is it possible to change the existing ...
3
votes
0answers
157 views

Building instructions: Robot Spider Pen by Ricardo Oliveira

Some time ago I found the following youtube video by Ricardo Oliveira of a small NXT plotter that crawls over a whiteboard. It has two strings that can be shortened through coils and with this, it ...
4
votes
3answers
197 views

How can EV3 Gyro sensor drift be handled?

EV3 robots can use a Gyro sensor to determine the direction the robot is heading. The initial conditions are important. The sensor needs to be still and then the sensor reset. However, once in a ...
25
votes
3answers
3k views

What is inside the “weight element” brick?

I own a few bricks that contain a weight inside of them. 52g according to Lego. What exactly is inside of these bricks that makes them heavy?
1
vote
1answer
89 views

Education EV3 Software Site Licence - installation on teachers computers?

WE've recently purchased some mindstorms ev3 education sets plus the site licence of the Software. in Switzerland many teachers do their preparations at home, so my question is, am I allowed to ...
0
votes
0answers
152 views

instructions for Lego bag 135149?

Can someone please help me find the instructions for Lego bag 135149? Thank you. The bag also says 2011 and I have a propeller type thins and a white helmet? Any clues what this is?
4
votes
2answers
138 views

How can I reuse LEGO part bags?

I go through so many of these annoying plastic bags. Unfortunately, not many places recycle them. Are there any ways they can be re-sealed?
2
votes
2answers
82 views

How do I find a set number without box or instructions?

So my brother found a open bag of a LEGO Chima kit. It had some of the pieces in it. I want to replace the missing pieces but I don't have the box. I tried looking for unique pieces but it didn't seem ...
0
votes
1answer
94 views

Why did LEGO stop selling sets for <1.5 year old (Primo etc)?

LEGO used to make Primo sets and baby toys for 6 month+ babies. As a parent of a young child the only option I have is Lego Duplo that isn't quite ready for her age. Are used Lego Primo sets safe ...
8
votes
2answers
1k views

Which is faster: M motor or XL motor?

I understand that the M motor has an adequate amount of speed, and the XL motor is best known for its torque. But is the XL motor really faster than the M motor? Or is it the other way around? I am ...
0
votes
1answer
97 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 ...
2
votes
3answers
188 views

Where can I find the instructions for the crane on the back page of Lego Juniors: Construction (10667)

Where can I find the instructions for the crane on the back page of Lego Juniors: Construction (10667), as pictured. I tried contacting Lego Support who replied unhelpfully with: We currently have ...
1
vote
2answers
662 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?
3
votes
1answer
82 views

Piece to hot air balloon won't fit. Anything I can do?

I am putting together the 41097 hot air balloon with my daughter and there is a red piece that shows a rod should go through however the rod will not go through no matter what we do. There seems to be ...
13
votes
2answers
405 views

What do the terms “vintage” and “classic” actually mean?

I often see terms like "vintage" and "classic" used to describe LEGO sets (especially on ebay, but I've seen them elsewhere, too). What do these terms mean? How strict is the definition?
2
votes
1answer
62 views

Where can I buy bulk Duplo sized bricks? (LEGO or Clone brands) (NOT normal size, Duplo size)

I am working on a project where I need LOTS of basic Duplo sized bricks and/or plates. I need only the simple sizes, 2x2 and 2x4 and possibly 2x6. I do not want any pieces with curves, slopes, decals, ...
10
votes
1answer
305 views

Is there a web service showing me the LEGO set with the most parts?

I'm interested in a challenge building a set with very much parts. I thought of the Unimog U400. But is there a webservice, where the sets are sorted by number of parts?
0
votes
1answer
60 views
3
votes
1answer
79 views

Please help me identify set

Please help me identify which sets these are from. I got a bag or LEGO and I think it is from multiple sets. Thank you!
1
vote
3answers
318 views

Reading current motor speed, opOutput_Read

I'm trying to read current motor speed using direct command: Instruction opOutput_Read (LAYER, NO, *SPEED, *TACHO) Opcode 0xA8 Arguments (Data8) LAYER – Specify chain ...
5
votes
2answers
323 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
187 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
37 views

Duplo Train Resources

I recently bought the 10508 train set for my 3 year old and he just loves playing with it. I am aware of the 10507 and 10506 sets to expand further. Are there any other resources available to buy ...
6
votes
2answers
18k views

Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / Windows XP driver

So I've recently dug up my old Lego Mindstorms RIS 2.0 (RCX) and have spent the past few days trying to install it into my Windows 7 laptop. It worked fine, except it could not find the correct ...
3
votes
1answer
1k views

What are the dimensions of LEGO 10221 Super Star Destroyer?

What is the length, width, and height of the 10221 Super Star Destroyer set, fully built, including its stand? I'm trying to make a display case for one.
3
votes
1answer
178 views

What is the best way to get in contact with a Lego expert?

Catawiki is looking to hire a Lego expert to estimate the value of offered sets and arrange its weekly Lego auction. Where and how could we find people who might be interested in such a position?
2
votes
1answer
564 views

Does the LEGO company actively follow or copy clone bricks?

What does The LEGO group do to follow clone brands? Do they buy at least one of every set produced by The Other Guys? I'm more interested about what the LEGO company does to keep up with what ...
9
votes
6answers
480 views

Which brands (fictional and non-fictional) have appeared in the Town/City theme?

A few years ago I wrote an article about the fictional organisation logos found in the City theme. I'd quite like to revisit this, as I'm sure I must have missed some. I also only focused on the ...
5
votes
1answer
81 views

Is it safe to remove PC (polycarbonate) arms from minfigures?

I would like to replace the clear PC arms on the Chima ice figures with opaque ABS. Would I still be able to use the clear PC arms with other figures after I have removed them? I know that removing ...
3
votes
2answers
686 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 ...
3
votes
1answer
91 views

Please help me identify set, thanks!

Got a bag with a lot of pink bricks. I think it is one of the lego friends set but don't know which set. Anybody can help me identify? really appreciated. Thanks]1

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