All Questions
4,218
questions
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 ...
- 101
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 ...
- 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 ...
- 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 ...
- 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 ...
- 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 ...
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?
- 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.
- 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
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, ...
- 235
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 ...
11
votes
1
answer
2k
views
7
votes
1
answer
388
views
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 ...
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. ...
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 ...
- 191
9
votes
1
answer
3k
views
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 ...
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)
- 73
3
votes
1
answer
627
views
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 ...
- 63
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....
- 101
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.
- 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 ...
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?
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?
- 61
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 ...
- 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
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.
- 11
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 ...
- 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, ...
- 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 ...
- 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
- 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.
-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?
- 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.
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/...
- 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.
- 4,197
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 ...
- 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 ...
- 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 ...
- 101
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? ...
- 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 ...
- 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 ...
- 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.
- 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 ...
- 163
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!
- 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. ...
- 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!
- 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. ...
user19400