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7 votes
1 answer
898 views

Identify helmets from LEGO Bionicle

I found these LEGO Bionicle helmets when looking through a box in my attic. I want to identify the corresponding sets.
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1 vote
1 answer
179 views

Identification tool for LEGO parts

I wounder if a lego part identification tool or POC already exist? I would like to try to build a small POC software using a such recognition concept. Where should I look first?
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5 votes
0 answers
146 views

How can I prevent rubber bands disintegrating?

These two answers partially answer this question., but I think it's worth its own question to find more options in a more comprehensive answer. Old Lego rubber bands are known to become brittle over ...
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2 votes
1 answer
131 views

Black Universal Joints

I'm seeking black universal joints for a project. Do these exist in genuine LEGO form? I'm guessing the answer is no, despite hints (here and here). Ideally, I'd like the 3L size. Do you know of a ...
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  • 420
5 votes
1 answer
466 views

42082 crane boom doesn't engage

At the top of the sleeve part of the boom is a gear and that is supposed to turn against a rack of teeth all along the inner slide part of the boom extension, to make the boom longer or shorter. ...
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  • 231
3 votes
1 answer
59 views

When using Mindstorms Scratch-like development tool for EV3, is it possible to move a single or a few selected blocks somehow?

Say I have 10 random blocks in a line. Is it possible to move number 4 to position 1 without also moving block 5-10? As far as I have managed to move blocks all following blocks also gets moved even ...
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  • 31
6 votes
2 answers
2k views

What is a rubber technic beam with two axle holes?

I'm starting an inventory on Rebrickable, and came across a part that I can't find listed. I can describe it clearly enough and I know how it might be used (but not why it's better than the "...
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  • 231
5 votes
1 answer
248 views

Identifying blue dragster?

I have bought this model as is without building instructions. So I don't know if this is an original model or a fantasy car. I'm interested whether this is a original LEGO model, which one it is and ...
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-1 votes
1 answer
187 views

Are either of these cars uncredited ripoffs from Rebrickable?

I'm no expert in searching Rebrickable, but turning up the minimum block count to over 3300 seriously cuts down on the number of matches. I've tried variations on the names and creative spelling, but ...
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  • 231
2 votes
2 answers
122 views

Multiple Programming Blocks Running at Same Time

My team created a simple program to drive robot out. It consists of a MyBlock to drive straight a specified distance and speed utilizing the Gyro sensor. The program then activates a third large ...
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  • 21
0 votes
0 answers
167 views

inventory of Nifeliz sets

Is there any pre-made inventory that I can use to add the Nifeliz sets I bought to Rebrickable, as I do with the Lego branded sets? I'm very surprised that a search for Nifeliz finds no posts, as they ...
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  • 231
5 votes
1 answer
189 views

How does the button on the Poltergust work?

I've seen that the Luigi's Mansion Lab (71397) set features the Poltergust: The basic idea of the in-game item is that it can reveal, suck, and blow enemies. It has a similar play feature shown on ...
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  • 34.5k
1 vote
1 answer
168 views

Different shades of the same color

I’ve bought a 10232 set recently online (not official store, some Amazon seller). The box and all packs were properly sealed, but I see some bricks have the same color (grey), but different shades. I ...
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4 votes
1 answer
153 views

Lego rough terrain 42082, page 57 book 1 - how does it connect internally

Is the dole meant to connect to another cog inside so all the gears rotate the big round cog on top (Image from brickinstructions.com)
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  • 41
12 votes
1 answer
624 views

Identify 4x4 and 4x8 plate with clip

Looking for part numbers of these plates with a belt(?) clip.
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11 votes
1 answer
1k views

Which set is this school themed sticker a part of?

Who can help find the set this belongs to?
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11 votes
1 answer
3k views

What is this LEGO minifigure with yellow face shield and lots of teeth?

I found this LEGO Minifigure and I can't identify him or what set it came from.
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2 votes
0 answers
96 views

Alternative Colour for Halberds in Lava RoboRider 8510

I recently bought a second-hand lot of RoboRiders, and noticed Lava included two halberds in dark gray instead of black, as listed in the BrickLink inventory. Did this set ever include dark gray ...
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5 votes
1 answer
763 views

Which Ninjago set is this from?

Hi, if you can help me identify which set this is from that would be amazing!
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0 votes
0 answers
120 views

Identify Mega Bloks part - 2x4 with holes and long bars at the end

Can anyone identify this Mega Bloks piece?
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8 votes
1 answer
2k views

What's the easiest way to build a delta robot using LEGO Mindstorms 51515?

I'm fairly new to Lego Mindstorms and I'd like to assemble a pick and place mechanism. I was looking for existing delta robot designs and found a lot of good looking designs: https://www.youtube.com/...
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8 votes
1 answer
204 views

How many minifigs have unique heads?

Most minifig heads seem to be shared by a few designs, but Alex's answer to a minifig identification question left me wondering: how many minifigs have heads that are unique to them? Presumably you'...
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  • 5,090
6 votes
0 answers
192 views

Was the color variation on 1970's transparent pieces really that bad or are mine unusual?

Having gone through a bunch of old 1970's Lego (I rebuild all my original sets during the Covid lockdown) I noticed that color-less transparent bricks and slopes have a lot of color variation to them. ...
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  • 1,170
6 votes
1 answer
657 views

I need to identify a minifigure head piece

This is the part I need to identify
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6 votes
1 answer
522 views

Parts identification (some may not be Lego) bugle, cart, vehicle front, broken-glass texture

Some more odd parts from the large bag of unsorted Lego I recently acquired. Hope that someone can identify them. The 2 pieces on the right are probably NOT Lego. No logos on there. The colors are ...
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  • 1,170
6 votes
2 answers
2k views

What set is this? Minecraft and Star Wars?

We have these sets in the Lego box. No box or instructions. I tried looking up codes and can’t find them. The silver part is the most unique one I can find to help look for it. And I think we have a ...
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6 votes
1 answer
239 views

To which set belongs this door with stickers on both sides?

I try to identify sets in a large bag of unsorted Lego (will probably have to ask some more of these in the coming days). This piece is a real odd-ball: A black door with (mostly silver) stickers on ...
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  • 1,170
1 vote
1 answer
110 views

Are both a Mario and a Luigi required for 2-player mode?

The Luigi Starter Course advertises the ability to "team up for new adventures": Does this 2-player mode strictly require a second Luigi, or would a second Mario also work? What about 2 ...
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  • 34.5k
2 votes
0 answers
85 views

NXT Sensors/Motors not working

I went back to using the NXT brick after two years and I'm having some problems: Motors do not respond to degrees or rotations; Ultrasonic Sensor and Color Sensor are not working; Touch Sensor is ok; ...
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5 votes
0 answers
301 views

How do I build my LEGO slope so it connects to the flat top without any notable ridges?

I'm currently building a functional LEGO escalator that is minifigure-scaled and with staircases transitioning from flat platform to stairwell to flat platform. Here's my progress so far: Here's the ...
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-1 votes
1 answer
131 views

Where can I find Orient Expedition 7419 gameboard tiles to print?

I lost the cardboard gameboard squares. Does anybody have a high quality scan of the tiles so I can print them ?
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2 votes
0 answers
108 views

Issue during VW T2 Volkswagen (10279) van assembly

My build does not match instructions on page 41: When I place blue piece on top of the crossbar, there are spaces on either side not one space. I have been extremely careful in following directions. ...
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  • 21
16 votes
6 answers
5k views

Estimate building time for a given LEGO set

I'd like to be able to estimate better how much time a LEGO set will take me to build. Are there any resources online that indicate average or fastest building times for a given set? I suppose it also ...
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0 votes
1 answer
279 views

Unidentified Lego bags in set 11015 (Around the World)

I’ve found some extra bags in a Lego set (11015). Qr codes are 6201540 and 6172064. Any ideas? Thanks!
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  • 1
9 votes
2 answers
1k views

Identify unusual parts - 1x2 with a circle on the end

I found 8 of these in a box of miscellaneous Lego but they don't have a part number on them. Anyone seen these before? Any idea what the part number might be so that I might be able to identify the ...
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8 votes
1 answer
2k views

Help identifying sealed LEGO bag - 4 large yellow wheels, a windshield, a motor and a figure in an olive green shirt

I bought this bag of LEGO bricks at a yard sale. It is sealed and I thought I could identify it by the number on that bag but got nothing. It appears to be a car and has 4 large yellow wheels, a ...
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1 vote
1 answer
77 views

Mindstorms v2 QuickTime won’t work

Still trying to get Mindstorms v2 working on Windows XP SP3. QuickTime causes software not to run with error code 2095. Have tried reinstalling QT several times. Tried different versions, no change. ...
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  • 151
3 votes
1 answer
277 views

Piece in Lego 21327 Typewriter Step 26 can’t be flush as depicted in the illustration

When sliding part #6327028 down the left three rods as depicted in step 26, that piece becomes snug with the gray spacer piece from Step 25, but there’s a gap on the two left rods. The 1x5 black ...
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2 votes
1 answer
96 views

Connected EV3 bricks don't react (EV3 Classroom)

I have a big robot that needs four big motors to drive it and two small motors for other functions -> I need two bricks to communicate with each other because they need to use the same sensors. I ...
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  • 21
7 votes
1 answer
188 views

Is there a way to create a database of bricks that are connected in different sets

I'd like to build a database (for a machine learning project) of which parts are connected to which part for a large library of (official) Lego sets. Is any such database available or would it be ...
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  • 73
4 votes
1 answer
318 views

Blue transparent piece

Which piece is this? Seems space related.
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1 vote
0 answers
38 views

2 Questions, 1: LDD V4.3.12 not connecting to internet 2: I can't find any EV3 electric parts [duplicate]

(I'm new to LDD) Hi, I'm trying to use LDD for designing a robot for my Lego Robotics Class. It's just whenever I launch LDD, it just keeps saying that I'm not connected to internet and asking if I ...
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11 votes
1 answer
1k views

Identification of this set with red, white, and blue bricks (mostly)

Consider: What set do these pieces go to? There is a minifigure that looks like it might be space-related.
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  • 213
16 votes
2 answers
2k views

How can I place a motor in the middle of a Technic beam with an odd number of holes?

Can you give me some advice how to make it so motor will be in the middle, but at the same time keep the functionality of the 2 axles on the sides? It can go further up if necessary.
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  • 163
3 votes
2 answers
126 views

mindstorms ris2 on XP memory error

I have installed mindstorms ris 2.0 on an XP system. Initially it worked fine now I get an “insufficient memory” error. I have reinstalled and tried a different hard drive. No change. Possibly the usb ...
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  • 151
4 votes
2 answers
1k views

Which sets use "white brick 2 x 1 with a skid"

let me ask you for a partnumber of part I have found at home and cannot join to any set. The color is white - brick 1 x 2 with added ramp. I have the part twice, so I am looking for the set where it ...
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0 votes
0 answers
110 views

Glue together already finished set? [duplicate]

I've read through other posts but haven't gotten the answer I'm looking for. My daughter purchased a mini brick model that was SO HARD to put together, and she dropped pieces that broke during ...
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  • 11
0 votes
3 answers
208 views

Best way to get Cara Dune minifig

With so many Mandalorian sets being retired this year and the controversy around the actress, I don't want to miss out on the Cara Dune minifig. What sets is this minifig available in and which is the ...
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  • 101
13 votes
1 answer
4k views

What are the brick numbers of the bricks circled in this image?

What are the brick numbers of the ones circled in this image?
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3 votes
1 answer
396 views

What is the name and part number of this piece? Part of a crane, long and thin without studs

The piece is used to build a crane as found in Youtube video
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  • 139

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