12
votes
3answers
3k views

Can I remotly control the points on PF train tracks?

I'm interested in investing in power functions based trains, but want to automate switching points. Is this possible? What is the cheapest / easiest way of achieving this?
8
votes
2answers
2k views

How to sell massive, vintage and unsorted lego collection with manuals?

So I was a big LEGO collector as a child in the early 1990s. The genres I have are town/city, pirates, and castle. To store them, I broke them all down to fit into 2 giant plastic tubs. I still have ...
5
votes
3answers
3k views

Is it possible to edit a my block input parameter value?

I have created my blocks but want to change the input parameter to a negative. Is this possible or must all the myblocks be re-written?
4
votes
3answers
6k views

Determining what set I have from a bag of lego pieces?

I have a bag of lego pieces that make a set of something but I don't have a box or instructions. Is there anyway to determine what set it is so I can download/buy an instruction sheet for it...or at ...
18
votes
1answer
15k views

How are LEGO bricks categorized?

What are the names and categories of LEGO bricks? Is there a consistent naming scheme? Does Lego have an official name or identification for different pieces?
27
votes
6answers
8k views

Has anyone automated the LEGO hand sorting process beyond “pawing & piling”?

I need to rephrase my question. Has anyone built or used a large pigeon hole/ chute/ bin collection system to sort LEGO elements? The sorting system doesn't need to be made of LEGO bricks. I just want ...
24
votes
3answers
8k views

Has anyone made their own custom LEGO bricks?

As I've just learned, LEGO bricks are made from ABS plastics. I wonder if it would be possible to make some simple molds at home, get some ABS pellets, melt them up and make your own custom bricks? ...
25
votes
6answers
4k views

Does the LEGO Group condone war toys?

What is the LEGO Group's position on war toys? Other brands make tanks and army stuff. I noticed LEGO sets include more realistic guns in the Star Wars range than they used to. What's up with that?
17
votes
1answer
1k views

What are LDUs and how do they relate to LEGO bricks?

What are LDUs? I see technical people talking about plans and designs in terms of LDUs. I understand it's a measurement unit. What does it mean and how do LEGO bricks relate to them? Why are they ...
13
votes
1answer
2k views

Explaination of LXFML file contents

I am interested in writing a game that interprets LXF files into worlds (to create a game such as Lego Universe). After finding out how to extract the LXFML file from the LXF archive, I need to know ...
9
votes
3answers
12k views

Alternative products compatible with LEGO [closed]

I heard that lately a patent for LEGO expired and now everyone can create a company to produce bricks that are compatible with LEGO. I am wondering how many of such companies are there. I know one ...
20
votes
1answer
1k views

Why are old LEGO bricks more brittle than new ones?

My vintage LEGO sets (circa 1980) are difficult to unbuild. Some pieces are prone to break. Did the plastic recipe change with time or are the bricks simply degrading?
16
votes
8answers
3k views

How can a sticker be removed?

In my younger days I may have placed a few stickers on my bricks. Including some that covered multiple bricks. Now my daughter has the tendency to do the same thing :) How can I best remove the ...
13
votes
1answer
828 views

What are all the different accessories that I can get for an NXT?

Pretty simple...What are all the different accessories that I can get for an NXT? I know this could turn into a list, but this will be a helpful list, I think.
10
votes
3answers
5k views

Is there a database of original Minifigure configurations, including their personal gear?

Is there a minifigure museum? I have a gallon jar (& more) of minifigures that my kids have mixed and matched. Is there a website I can reference in order to put the minifigures back in their ...
22
votes
5answers
804 views

How do you plan large structures for easy and safe transport to shows?

Imagine I am building a large display that will cover many square feet and have both tall buildings and lots of small details. What are some techniques for making these things modular? Is it safer to ...
17
votes
5answers
2k views

How can I motorize City-scale wheels?

I'd like to build city-scale (6 studs wide) vehicles motorized with either PF motor or clockwork. The primary problem right now is connecting wheel(s) to motor. Are there small enough LEGO wheels with ...
15
votes
4answers
7k views

Are LEGO bricks recyclable?

Yes, I know that it is kind of a dumb question, as no one would want to dispose of LEGO bricks. But it's a curiosity thing: are Lego bricks recyclable?
15
votes
3answers
6k views

What is the largest Lego kit commercially available?

I believe the Imperial Star Destroyer is the biggest in terms of size, at 58.8 cm by 50.5 cm by 21 cm, and the Death Star in the number of pieces, at 3803. Are there any newer, bigger models?
13
votes
6answers
8k views

What are the largest Technic-compatible tires on the market?

I am looking for the largest LEGO wheels with tires available to build a nice-sized RC LEGO car. Of course I will start with the simplest prototype, but I would like to achieve a design which will ...
12
votes
1answer
3k views

What sizes of bricks (building scales) have carried the Lego brand name?

Apart from regular Lego and Duplo, what other sizes of brick have there been that have carried the Lego name? What is the compatibility between the different building scales?
11
votes
4answers
2k views

How should I go about selling $3k worth of unsorted LEGO sets?

Here is my problem. Over the years my son had me buy a large number of Star Wars sets (including 10179, 10188, 6211, 7676, 7675) and he built them. Then he traded (or lost) most of the mini-figs ...
25
votes
3answers
4k 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?
18
votes
2answers
1k views

What are the practical bounds of a minifigure?

I want to make some minifigure-scale vehicles and devices, but I am wondering what the smallest possible minifigure enclosure might be. I know minifigures are not perfectly square. Their arms and ...
13
votes
3answers
563 views

How to find out if an element is out of production

Is there a way to know if Lego has officially stopped making a certain Lego element? As an example, from the 580 Lego set, I haven't seen this conveyor belt (along with those wheels and the "Legoland"...
13
votes
5answers
1k views

Does Lego market sets that were designed by fans?

My {son, daughter} read on a LEGO box that the set was designed by a LEGO fan. That is amazing! Is this common and how does my {son, daughter} get into that? What sets were designed by fans so far?
13
votes
1answer
736 views

What are these Technic “Zapfen” (“stoppers”) called in English?

What are these pieces called in English? Google translator doesn't help in this case...
12
votes
6answers
3k views

Repairing Lego minifigure torso cracks/damage

I have a ton of Lego minifigures that I really put through their paces throughout my childhood (fighting pirates, exploring space... basic stuff really). A number of them are damaged on the torso. ...
12
votes
1answer
2k views

Can I pitch an idea to LEGO?

How would I contact LEGO about an idea for some kits to be built and sold? I have designs for simple kits that I have built for my son that I think would be very popular.
8
votes
4answers
8k views

How can I identify kits from a box of parts?

I am a life long Lego Maniac, and my kits from when I was a kid were passed down to my nephew, who has just passed them down to my son (40 years of history...). The trouble is that none of my old ...
7
votes
2answers
715 views

Does Toy 'R Us (or more expensive-than-average) retailers have more extra parts than average?

I haven't bought LEGO sets for a while, as my kids are just getting old enough to make the sets, but I am assembling the LOTR sets which I find impossible to resist. I bought Gandalf Arrives (9469) ...
5
votes
1answer
851 views

How to control a 88004 Servo Motor with a Raspberry Pi?

I am able to control a simple servo motor such as SG90 by using pulse-width modulation. However when it comes to controlling a 88004 LEGO Servo Motor it is simply a nightmare. By using PWM all I ...
4
votes
1answer
145 views

Can I Conect 2 NXTs so that they work together?

I am building up a robot and I want to use 2 NXT connected together because I need more than 3 ports A,B,C. So my question here is: When I write the code, is there anything different I have to do? ...
24
votes
3answers
16k views

Why are there extra pieces in my set?

I bought an advent calendar, with a minifig or part of a scene behind each door. Each piece is sealed in a plastic bag and needs to be assembled. Almost every bag has an extra piece in it. Is this ...
13
votes
3answers
1k views

Why are Lego sets put in such big boxes?

I am wondering why Lego puts sets in big packages. All bricks are put in small plastic bags and from my experience the packaging could be at least half of what it is. There is so much told these days ...
12
votes
3answers
6k views

Removing glue from Lego bricks

When I was five my Dad used some kind of a good glue to put together a set together so I didn't loose any pieces. Putting the ethics of that action aside, I want to split the bricks from another and ...
11
votes
2answers
2k views

Where can I get 'classic' Lego heads from?

The new heads with expressions are all well and good, but I for one prefer the expressionless 'classic' faces. Are they available anywhere?
10
votes
1answer
516 views

Historically, what types of sets have proven to be a great investment?

My brother recently sold some of the lego he had as a child, and they went for a lot more than they cost originally, even taking inflation into account. So, what types of sets have risen in value ...
8
votes
1answer
1k views

Why is my LDD model incomplete after I export it to LDraw?

I have an LDD model that I exported to an LDraw file. When I opened it in LDView, only part of it was displayed. It looks like some parts were not exported properly. Is it normal? Why does it happen?
8
votes
1answer
1k views

Why doesn't LEGO bring back old series as they were “in the day”

As many of you probably can tell, LEGO has been rehashing old series and giving them a new twist (eg. Rock Raiders -> Power Miners, or whatever its called). Why doesn't LEGO actually make some of ...
8
votes
3answers
7k views

What parts are really required to motorize 10219 Maersk Train?

The Official site detailed page states that: Motorize your Maersk train by adding LEGO Power Functions #8878 Rechargeable Battery Box, #8887 Transformer 10V DC, #8884 IR Receiver, #8879 IR Speed ...
8
votes
4answers
1k views

Where can I find LEGO X-Pod Playoff rules and printoffs?

Where can I find X-Pod Playoff rules? LEGO doesn't seem to be hosting them anymore. Asked because of this question. Hopefully it can be mirrored on a few sites so that it doesn't disappear again.
7
votes
1answer
3k views

Mindstorms 2.0 can't download to NXT brick with error 142023

Using Mindstorms education 2.0 on a Windows 7 computer I can't seem to get the program to see the NXT via USB or bluetooth dongle. When connected by USB nothing appears in the NXT window with device ...
6
votes
4answers
990 views

Removable glue for LEGO models

I want to glue my 4-year-old's LEGO bricks, but I want to be able to remove the glue when he is older. What is the best glue to use that is removable and okay to use on LEGO bricks?
6
votes
1answer
474 views

How can a Mindstorms robot lift something very heavy?

I have a small LEGO Mindstorms robot and I have to lift something heavy. Now it seems not possible because the motor is not heavy enough.
5
votes
1answer
2k views

On Lego Mindstorms EV3, is there a way to change the input parameters of a My Block? [duplicate]

I am writing a program for which I did a My Block. I later realize that I need to add a new input parameter and I can't find a way of doing this without creating a new My Block. This seems it should ...
4
votes
1answer
282 views

Old sets, new bricks

Are there sellers out there that compile old discontinued Lego sets with new bricks? In other words they source new bricks and instructions to put together old discontinued sets. Thanks
4
votes
1answer
485 views

Lego 3804, Mindstorms Robotics Invention System 2.0 on Windows 10

I gave my grandson (11 years old) the LEGO 3804 Mindstorms Robotics Invention System 2.0. He built a couple things and when he tried to install software to program what he built, the computer would ...
4
votes
1answer
505 views

Is there a changelog for any firmware updates on an EV3 brick?

When a firmware update is released for the Mindstorms EV3 brick, are there usually any changelogs for them explaining what's been added or changed? If so, where can they be found?
4
votes
1answer
837 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 ...

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