LEGO® Answers Stack Exchange
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1500 questions
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Significance of the switch from Legoland to Lego System?

In former times, Lego boxes used to feature a diagonal Legoland label in one corner. (See, for instance, the box of the Space Police I capital ship, set 6986.) Later on (if I recall correctly, starting in 1992), the Legoland label disappeared, and…
O. R. Mapper
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Good "freeware" mosaic creator

I need to know of a decent "freeware" program that can take an image and turn it into a full color mosaic. It also needs to have a part count/listing.
JM Kraemer
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How should I model a Heroica Banquet hall?

My son had a great idea for his Heroica game: Convert one of the desks from the Fortraan set into a table with food, and then your Hero could stop there and eat to regain health. I pointed out that the kitchen already had a table with meat on it…
Zhaph - Ben Duguid
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What LEGO Power Functions parts do I need to make an RC car?

I'd like to make a remote control car with steering and forward/back functionality. Looking at the LEGO Power Functions parts I'm assuming I need the following: A battery box (8881 or 8878) A motor for drive (8883, 888003, 7772) A servo for the…
BaronGrivet
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How should I prepare one (currently built) LEGO set before selling it?

I have a large used LEGO set that I'm hoping to sell or gift onwards (Scorpion Pyramid). It's currently built (and therefore complete, and not mixed up with any other LEGO), but I'm not sure what to do to prepare it for passing on. Do I take it…
Mich Sampson
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When did piece markings change from DUPLO to LEGO?

I've looked at some of the DUPLO bricks I grew up with, and compared them to newer ones. I've noticed that the knobs on the older bricks say DUPLO, while the newer ones say LEGO. When did this change? On the back of the yellow brick (not…
Diederik
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How can an EV3 motor "remember" it's starting position?

I am currently working on a project that uses large motors. I want the project to return to a "starting position" (0,0,0) at the touch of a button so that it can be used multiple (identical) times. How can I do this with the regular Mindstorms EV3…
Christopher H
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Is it possible to damage a pneumatic pump/motor by applying too much pressure?

I've recently bought the Mercedes-Benz Arocs model, which contains a compressor (i.e., a pneumatic pump which is operated by an L motor). I was wondering whether you can ruin your pneumatic system and/or the motor by simply "overpumping" and thereby…
D.R.
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How do you program mindstorms to keep doing a task until either the IR OR the colour sensor state changes

How do you program mindstorms to keep doing a task until either the IR OR the colour sensor state changes. I would like to use the wait block but it can only be either the colour sensor or the IF sensor. i want to continue the activity until either…
Emily
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Understanding the makeup of an XML .ev3p file

When you unzip an .ev3 program, there are many txt and xml files that are inside. In particular, there is an xml file produced with the filename extension .ev3p, which seems to contain program instructions which the EV3 brick can then interpret and…
Nick M.
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Non-working technic system

Recently I've been working on a car which when going forward is fast, and when going backward automatically goes slowly. Here are two photos of it: (Just replace the text by "input") As you can see, it uses a switch to change of speed. Above…
Kimatuy
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Challenge: Specialized Palm Build

I'm trying to design a hand for a MOC using the (not so) new Mixels ball joints, in line with a concept that I've had rattling around in my head for a while. The current palm design I'm trying uses the Technic Gear, 24 Tooth with four of the Pin…
Lepidolite Mica
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What are these Technic sets with figures?

So I'm trying to identify these two LEGO sets that are rather old. I have long since lost the instructions and I can't seem to find the specific parts on BrickLink. Here are the photos of the complete builds: Album I'm not sure if the two belong…
Kevin
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1 answer

What's this weird blue 8-long thin hinge piece?

I've spent several hours on BrickLink now trying to identify this mystery piece. It doesn't have a part number on it, only the Lego logo. It looks kind of like a hinge or something that might snap into a doorway, but I haven't found anything…
Martin
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1 answer

What is the set number for these Star Wars parts?

We lost the majority of my son's Lego collections in a flood. The attached pictures are all we have and need them identified for insurance. Would appreciate your help identifying the set number.
Tom
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