All Questions

Filter by
Sorted by
Tagged with
10 votes
0 answers
211 views

How To Ensure Only One Brick is Fed Into a Lego Sorting Machine at a Time?

In this video, they create a machine that can take a bunch of legos put on to a conveyor belt and, using a camera, sort them into a number of categories. I am building a (smaller) version of this, and ...
user avatar
3 votes
0 answers
102 views

EV3 classroom cannot create New Project

EV3 Classroom V1.5.0 Windows 10 I run a lab of 24 laptops running EV3 Classroom v1.5.0. Over the last week, more and more computers are unable to create new projects and/or open existing projects ...
user avatar
  • 31
6 votes
0 answers
192 views

Fix Lego M Motor - The hooks aren't budging

I have a Lego M motor that is broken. I'm following the instructions here to try to fix it but the little tabs that hold the plastic frame together just won't budge no matter how hard I'm pushing them ...
user avatar
  • 1,089
7 votes
1 answer
98 views

RCX only accepts short programs

I'm new here. I used to use the old Mindstorms to teach robotics at a school back in early 2000s and I thought my grandson would like it, so I have bought an old second hand system. The RCX brick ...
user avatar
  • 151
14 votes
1 answer
1k views

Is this a LEGO part? rectangular base with sides, and a bar extending from the middle

I distinctly remember separating this part from some Bionicle parts. But is it a original LEGO part? There are no part numbers or other marks on this piece - except for a "2" (seems to be ...
user avatar
  • 149
2 votes
2 answers
245 views

"Heads up! Could not open project" error message when opening project

When I try to open my project it gives me error saying "Heads up! Could not open project". Could you please help me? Let me know if you want me to share the file. We were working on that ...
user avatar
4 votes
1 answer
708 views

Why did the light block change in SPIKE v2.0.0+?

I found Unofficial SPIKE Prime Block Guide, which has following details: And if you open the SPIKE app (2.0.0 or newer), the light blocks were completely changed: Is anyone able to explain why?
user avatar
  • 253
3 votes
0 answers
148 views

Mega Bloks Set Identification with large pieces AM09249 and AM09250

Does anyone know which set these parts are from? I have two of them. Labeled AM09249 and AM09250.
user avatar
  • 39
7 votes
1 answer
184 views

Could identify this bag #2, 540R6, year 2015 135149 - lots of Dark Grey and Tan

It looks like it is from a Star Wars set, but I'm still looking where it came from, thanks
user avatar
5 votes
1 answer
219 views

How to use REPL on the 51515 hub?

I've just got access to a 51515 Hub and I tried to connect to it as a serial port (with baudrate 115200), however it's spamming the console with motor/sensor data: {"m":0,"p":[[62, ...
user avatar
6 votes
0 answers
211 views

What is the number printed under the barcode of a Lego set?

I’ve got two sets of Lego Ideas #025 (steamboat Willie). They have the same barcode. Underneath the barcode there are some small numbers: one box has 118789 970, but the other box has 118789 017. A ...
user avatar
11 votes
1 answer
2k views

Cargo bike brick identity

Looking to identify the box pieces here:
user avatar
7 votes
1 answer
388 views

Brick identification - two thin arches

Can any one ID the red arch with the baby in it?
user avatar
6 votes
3 answers
269 views

Keeping LEGO near heat source

I keep some of my opened built LEGO sets in the top of my book shelf, around two feet away is a fire place that is turned on during the winter time. Will keeping my LEGO sets here damage them in any ...
user avatar
3 votes
1 answer
173 views

Which LEGO vehicle has 1x 50373 and 2x 30165 red bricks

I have a vehicle that we previously built with, ostensibly, the paper book instructions. Lo and behold, they are MIA. The vehicle is mostly intact and mostly red, so I'm betting it's fire or rescue. ...
user avatar
4 votes
1 answer
60 views

Kick a LEGO MINDSTORMS NXT p-Brick out of SAM-BA mode without writing new firmware?

I recently received a LEGO MINDSTORMS NXT p-Brick which, surprisingly, still has the original retail V1.01 firmware on it. My goal is to extract its current firmware image to a file while maintaining ...
user avatar
9 votes
1 answer
3k views

Identify LEGO set which looks like helicopter

Can you help me identify this LEGO set please?
user avatar
7 votes
1 answer
260 views

Help identify minifig Pharaoh-like headdress

Recently found this minifig headdress in a bag with mixed LEGO and analogs. Not sure if it belongs to LEGO, but quality is great and it perfectly fits minifigure head. The sets in bag was belong to ...
user avatar
7 votes
1 answer
987 views

Help identify this Lego set - light blues, browns, and dark purples

I got a mixed set and have worked through them but have a couple I can't identify: (click to enlarge images)
user avatar
3 votes
1 answer
627 views

Identify this T-shaped part

Seems to be used for making differential gearboxes, cars, and GBCs.
user avatar
  • 139
0 votes
0 answers
72 views

What is this large stick-like, tan+dark blue piece? [duplicate]

I found someone selling a bulk lot of Lego online (specifically, large pieces only, not a collection of sets, so I don't think the surrounding pieces will be any help). One of the pieces is this ...
user avatar
0 votes
0 answers
38 views

Specific Pieces Not Listed on Lego.com PAB [duplicate]

I wanted to buy the pieces for and build the Lego Mars Curiosity Rover set, which seems to have been discontinued. I found the instruction manual (https://www.lego.com/cdn/product-assets/product.bi....
user avatar
7 votes
1 answer
481 views

What is this LEGO part number? Technic, right angle with 4 pins sticking out

This part is required for building a LEGO steering rack. It connects the moving rack to the wheel axle.
user avatar
  • 139
0 votes
0 answers
139 views

Help Identifying Unique Brick - 3 long prongs or claws

Anyone know what this piece is from? Came with a bulk bin of Mega Bloks. Only mark is "AMO4987" on the bottom in one of the recesses, no Mega Bloks or Lego stamps. Mega Bloks/Lego nubs fit ...
user avatar
8 votes
0 answers
224 views

I got a vintage roof brick that is very nice but can’t find what it is?

I got these parts in a lot, but can’t find any history or brand or set on them?
user avatar
6 votes
1 answer
669 views

Identify set by bag 4 - lots of circular pieces

All I have is bag 4 from one of my son's sets. He says he wasn't missing any bags and completed them all. Can someone identify which set it's from?
user avatar
3 votes
0 answers
80 views

Is there a parts list for Light Stax pieces anywhere?

Light Stax is a clone product that focuses on electrically lit bricks. It basically works like the 1990s era Lego 9V connector plates - contacts embedded into studs and negative studs, so any Light ...
user avatar
  • 1,742
4 votes
1 answer
628 views

What Lego set is this from? minifig-scale bumpy grey spaceship

I got this in a bundle but no idea what set it's from. Thanks for your help
user avatar
1 vote
1 answer
178 views

What is the reference of this part? Two short rounded bars with a circle between

It is similar to a lipstick piece but a bit shorter. I'm starting to wonder if it's even Lego but if seems pretty compatible with everything.
user avatar
10 votes
1 answer
346 views

Will custom parts be included in .IO-files?

In a Stud.IO project I made I'm missing a specific printed part that isn't available in Stud.IO. So I used the Part Designer to create a custom part, which is basically just a normal 1x1 tile with the ...
user avatar
  • 1,243
3 votes
2 answers
151 views

Camera for Spike or Mindstorms for Streaming

I have made a few EV3/Spike robots that can be controlled remotely. They are controlled by either a PS4 controller or using a dashboard I built on a website. I'm running Python on the LEGO. However, ...
user avatar
  • 31
3 votes
0 answers
121 views

Attaching a laptop to a table

I want to give my minifigs a few laptops. Specifically, 62698 "minifigure utensil, laptop"s: I've seen laptops in sets and MOCs, but always either (a) closed, being held in a minifig hand ...
user avatar
  • 4,649
0 votes
1 answer
107 views

How can I build MOCs well [closed]

I want to learn to build MOCs well. Is there any advice or websites/videos that give building advice and techniques for building
user avatar
  • 11
8 votes
1 answer
2k views

What’s this brick called? Two studs long and has clips on one side

It’s two studs long and has two clips with horizontal openings on one side.
user avatar
-2 votes
3 answers
258 views

Why does this "useless machine" use out of production parts?

I found this new video. It uses out-of-production parts like the transmission parts. So when I tried to buy these elements in new Technic sets, I didn't find some of them. Any suggestions please?
user avatar
  • 253
4 votes
1 answer
227 views

Which set did this head with horns come from?

Bought in a lot sale and can't seem to find which set this is from, looks to be a partial dragon or snake? The lot had some Nexo knights and Ninjago stuff.
user avatar
3 votes
0 answers
89 views

Boost on laptop

How to manage the Boost set using laptop (with Windows)? It seems that the Boost Application for Windows 10 earlier available on Microsoft Store is no longer working: https://www.microsoft.com/en-us/p/...
user avatar
  • 83
4 votes
1 answer
2k views

Can you identify these legs with the grass skirt?

Can anyone identify these legs. I tried searching Bricklink for "legs skulls" and "legs grass skirt" but couldn't find it.
user avatar
18 votes
4 answers
2k views

How can I get my motor to line up with a linear actuator?

I am very new to Lego, and I want to create a simple horizontal sliding door. I'm using a medium linear motor to drive a linear actuator which is attached to the door. The problem is the motor does ...
user avatar
  • 181
2 votes
1 answer
127 views

Why are the modified 1x2 plates with tow ball (socket) only available in light- or dark bluish gray?

Both pieces 14418 and 22890 appear in quite a large number of sets, yet they are only available in light- or dark bluish grey. The reason I find this strange is that in many cases, they do NOT match ...
user avatar
  • 263
10 votes
1 answer
844 views

What is the part name and use for this small piece shaped like a lever?

Looking for part name and use, stamped and has different numbers on each one I find. Small and shaped like a lever. Same size as antenna piece actually. I feel it is part of a larger piece similar to ...
user avatar
11 votes
1 answer
2k views

What is a Planetary Decoder? What does it decode? How does it work?

This answer to Classic Space part? says In White it appears in two Exploriens sets 6856: Planetary Decoder and 6982: Explorien Starship Question: What is a Planetary Decoder? What does it decode? ...
user avatar
  • 213
7 votes
1 answer
150 views

What is an effective method for breaking down and storing large sets for future rebuilds?

I would like to breakdown and store my Harry Potter Castle (71043) but not sure the best method doing so. I have young kids that would love to rebuild this some day so I want to make sure I break this ...
user avatar
  • 71
6 votes
1 answer
275 views

Has the colour "White" changed over the years?

Recently, I bought a new and sealed 70828 Pop-up Party Bus, 2019, a quite underrated set, in my opinion. I was surprised to see that the many white parts are not as white as I expected. I compared ...
user avatar
  • 2,513
6 votes
1 answer
442 views

Classic Space part? near-triangle with 2x6 on one end and 1x2 on the other and a lot of empty space between

Is this a classic space part? Found in a box of old LEGO.
user avatar
  • 163
6 votes
1 answer
147 views

Are there known manufacturing issues with 1x1 gold cones?

Are there any known issues with LEGO 1x1 gold cones? We received a set containing them and two broke within an hour (under normal use). They were part of this set. You can see one on the top of the ...
user avatar
0 votes
1 answer
143 views

Need Help identifying LEGO castles

would anyone be able to assist with identifying the following 2 LEGO castles? We’ve tried looking on the catalogues so far but no luck. If anyone can assist, I’d appreciate it :) thanks!
user avatar
  • 1
6 votes
1 answer
191 views

Make and take set identification - white, tan, brown, and a long yellow axle

My kids got these pieces in a plain clear bag for Christmas 2021. I think it is part of a LEGO Make-and-Take event at a Toys R Us from this past year or something but they didn’t get any instructions. ...
user avatar
  • 123
5 votes
1 answer
142 views

Help identify 1x2 modified plate with both pin and axle holes

Trying to identify this piece to buy some extras. Can't find anything like it on Bricklink. It came in a MOC set, not official Lego. Any help greatly appreciated!
user avatar
  • 53
5 votes
1 answer
253 views

Saturn V build step 124

Step 124. Having some difficulty from the diagram figuring out how to orient each of these four pieces. Can't figure out if the light grey nozzle is suppose to snap into the bracket shown in step 123. ...
user avatar

15 30 50 per page
1 2 3
4
5
85