All Questions

5
votes
1answer
138 views

Are there any difference between the 88003 and 99499 L motors?

I am planning to attempt a couple of RC MOCs and was looking up the power functions L motor on BL and found that there are actually 2 types of the L motor, namely the "88003 Power Functions L Motor" ...
4
votes
1answer
97 views

LEGO color discrepancies and tint variations

While building my copy of set 21310 - Old Fishing Store, I noticed that there are several shades of Sand Green amongst the many tiles of this set. The picture below shows just the 1x4 tiles included ...
2
votes
2answers
132 views

Re-building sets - can you help?

My son has A LOT of LEGO sets, which have sadly broken down into many, many millions of pieces. Does anyone know of any paid services that might help re-build his sets. I know this sounds like it ...
6
votes
1answer
119 views

How to place minifigure legs into normal LDD bricks, like a 1x2 brick?

Let me clear up the confusion surrounding this question to the best of my abilities I'm currently in the final steps of finishing of a mech project I started some time back, finishing now at the ...
2
votes
1answer
43 views

What is this EV3 controlling app

What is this EV3 controling app that is used here: https://youtu.be/Sjix76QjtMU?t=1m43s
5
votes
1answer
121 views

What is this brick?

I have a 2x4 white Lego brick in the shape of a figure driving a go kart. It has a stalk to accommodate a head with Lego embossed on it. There is no serial number except for a 4 stamped underneath. ...
6
votes
1answer
88 views

What are these numbers for this element name?

I have a part inventory for a set and it has some axles with numbers next to them. This is not a technic set, but I imagine the numbers are the same as in this question - LEGO Technic part Numbers ...
1
vote
1answer
78 views

Identify these window panels ~4x3

These window panels came in a bulk buy and don't fit any of the accompanying windows. I would have dismissed them as not LEGO, except the greenness exactly matches other trans green elements. They are ...
4
votes
1answer
79 views

Black curved top piece of assembly

This piece does not have an identification number on it. It appears to be part of a larger assembly. At each side are two 'legs', neither of which have stud receptacles, so it doesn't hook on to studs....
4
votes
1answer
146 views

Mindstorms Chromebook app Stuck in Zoomed-Out Position

We are using the LEGO Mindstorms app on Chromebooks. Our test program got zoomed-out to the point of being too small to read. The remainder of the screen is normal sized. We've tried using 2 fingers ...
5
votes
1answer
117 views

How to prevent discoloration

I recently moved into a 1 bedroom apartment, and I am storing my Lego sets out in the living area. There is one problem: one wall is practically all window. Since it is unrealistic to have the blinds ...
4
votes
2answers
1k views

Facebook ads for cheap LEGO : legit or scam?

Today, I spotted an ad on my Facebook feed for the website "winnerattop" Someone commented on Facebook that this website is a mirror of "childtocoll". According to scamadvisor, both domains are only ...
1
vote
1answer
110 views

Please Help! My LEGO BB-8 Minifig Head Is Stuck In a Helmet! [duplicate]

My younger brother lodged his BB-8 head in a helmet, and I just can’t dislodge it.
1
vote
1answer
97 views

Program for NXT golf robot not looping properly

This is what I made: I will put this robot straight in line with the ball I have to make this robot go forward and once it reaches the ball, I have to make it stop and hit the ball with the swing ...
3
votes
1answer
92 views

Why does the Duplo bathtub piece have an odd height?

I have recently come in touch with the Duplo bathtub piece. While it is mainly a bathtub whose bottom is shaped in such a way that it can be placed on Duplo studs, one of the piece's sides also ...
3
votes
2answers
219 views

Can PoweredUp trains talk to multiple Bluetooth remotes?

According to this review of the new 60197 passenger train you can only have one Bluetooth thing talk to the new LEGO battery box at a time. The new Power Up system as it currently appears in this ...
0
votes
1answer
66 views

How could I make a golf robot from a LEGO NXT kit?

I want to make a golf robot. It will be placed straight in line with the ball. It will approach the ball and swing. The part where I get confused is how to get it to swing in a left-right motion when ...
6
votes
0answers
76 views

Is it possible, to remove a parted out set from Bricklink inventory?

I have an inventory in Bricklink, in which I accidentally parted out (with the consolidation option) two sets instead of one. Is there a way to remove the pieces of the second set somehow without ...
6
votes
1answer
137 views

What came first? Print or sticker?

Recently I learned that there seems to be no strategy in the LEGO design about when to use stickers and when to use prints in a given set. My question is what LEGO used first to decorate bricks: ...
6
votes
1answer
131 views

Can you help me identify this poly bag?

We got this bag in a free box and don't know what it is!
8
votes
2answers
105 views

Smallest rubber wheel that can be turned by a technic axle

What the smallest rubber wheels that can be turned by a Technic axle? This is what I have so far Wheel Full Rubber Balloon with Axle hole #4288 Background: I'm building a GBC and I want to push the ...
5
votes
1answer
111 views

Any ideas how to seperate these pieces?

Any help please? I've got these two pieces stuck together and not sure what to try! I don't want to break the pieces...
2
votes
1answer
107 views

How can I get the EV3 to control an ordinary motor with PWM?

Looking at the hardware developer pdf, it looked like the EV3 should output a PWM signal with a duty cycle corresponding to power level. It does, but only for 100ms and only on pin 1. Is that how the ...
6
votes
1answer
226 views

How to convert LEGO base plate to a DUPLO base plate? [duplicate]

How can I convert a regular LEGO base to a DUPLO base? I have a table that cannot be changed and it has built-in LEGO baseplates, but I need it to be 100% DUPLO compatible. Any LEGO to DUPLO baseplate ...
2
votes
2answers
147 views

How to make an exact 16 degree turn?

Does anyone know how to make an exact 16 degree turn with a LEGO robot?
1
vote
1answer
98 views

Why does the Gyro Sensor not work correctly in Virtual Robotics Toolkit?

I somehow found out about Virtual Robotics Toolkit and when I did, I decided that it would be great software to use for Lego League. Later in my research, I found that it automatically had the newest ...
6
votes
2answers
614 views

Which set is this with a white truck and camper trailer?

I’ve been searching online for quite some time to find this set number, name, and the instructions, but I’ve had no luck. I’ll be passing it on to a youngster in the family and after it’s promptily ...
1
vote
1answer
96 views

Can you identify the set these white vehicle elements come from?

We got this big box of Lego bricks, and we don't have the manuals, please help!
3
votes
0answers
75 views

EV3 Brick and Commander app bluetooth disconnecting

On OSX on an iPad, we're having an issue with the EV3 Brick and Commander app bluetooth connection constantly disconnecting. The brick just stops responding, so we turn the brick off to disconnect and ...
2
votes
2answers
56 views

Is the EV3 compatible with a 3rd party I2C gyroscope?

The only detail I've found so far is that the pull-up resistor should be 82k ohm. I'm wondering If I could just get something like this Adafruit Gyro/Accelerometer and just hook it up to the SDA and ...
3
votes
1answer
92 views

Part Identification: Foot Piece?

I saw this piece used as a foot in someone's MOC and I can't figure out what it is. It kind of looks like a bionicle foot but it doesn't match any that I know of. Pretty sure that the axle going ...
0
votes
1answer
80 views

Please help . Lego Set ID (Police)

I got another police set cant find directions.
3
votes
1answer
100 views

Please help . Lego Set ID (Green)

I need your help to identify this set.
4
votes
1answer
122 views
1
vote
1answer
60 views

Importing 3ds file in ldraw (LeoCAD)

I designed a model in LDraw/LeoCAD and exported it as .3ds file. I thought that I can import .3ds file to edit it later. Now I want to edit the model but I don't see any option to import the .3ds file ...
2
votes
1answer
278 views

Are there Powered Up compatible connectors available?

I'm interested in experimenting with custom LEGO Powered Up peripherals. Are there connectors available that I can use to interface with the hub?
1
vote
1answer
598 views

How to MOC the Rough Terrain Crane 42082

I recently got me the Rough Terrain Crane 42082 and had lots of fun while assembling it. I find it a decent Technic build and worth the price. Still I find it under-motorized. I would like to drive ...
4
votes
1answer
99 views

Can you please identify these two assemblies?

Set assemblies 1 Set assemblies 2
11
votes
1answer
640 views

Part identification: 40t gear from The LEGO Movie

While watching clip of the LEGO Movie, I found a strange part: Slightly earlier in the video, its part number is shown as 3649. But it doesn't match the 40t gear I know nor the pictures on bricklink....
6
votes
1answer
280 views

What is this 2x4 brick with a 2x3 rounded plate with hole attached?

I found this LEGO brick and have no idea what it does, it’s name, or which set it is from. It is a 2x4 brick with a 2x3 base plate with a rounded end and a hole in it. Can anyone tell me about this ...
3
votes
1answer
101 views

Can you identify what sets this partial build and bag of LEGO elements come from?

We got this big box of Lego bricks, and we don't have the manuals, please help!
10
votes
2answers
398 views

Identifying Parts Used For The Escape Hatch of Sariel's Tiger XL Model

I am working on a similar model of Sariel's Tiger XL in prep for my own designs of a few other German WW2 tanks, and need some help identifying a part or two. Does anyone know what are the two parts ...
8
votes
1answer
153 views

Duplo Locomotive: What is this inner part used for?

Background I was forced to completely disassemble a duplo locomotive. My son played with it in a sand box and, guess what, it was not working anymore. I used a small brush to clean everything single ...
7
votes
3answers
2k views

Lego Mindstorms Ev3 home edition on Mac OS Mojave bug - bricks sometimes go blank

I have a fresh install of Mojave and of Mindstorms Ev3 home edition. It seems to work fine but then randomly all the information disappears from the blocks at the bottom of the screen, and sometimes ...
3
votes
1answer
48 views

How do I delete custom images I made in my computer?

I created a custom image for a test, and everytime I download the program to my brick, the image shows up in the folder despite me not using a display program. How do I fix this?
3
votes
1answer
48 views

Get robot to face perpendicular to nearest object, using the ultrasonic sensor in NXC?

I have an ultrasonic sensor attached to a motor so that the sensor can rotate. Right now it stops once it scans a value less than 65 cm. What I want it to do is to scan its surroundings and then face ...
5
votes
1answer
244 views

Pattern for oscillation with LEGO Technic

I would like to simulate an oscillation movement of 120/100 degrees around a fixed point. Something like this one: Basically, I want to rotate a gear around its axis, but only have a partial ...
22
votes
6answers
4k views

What sets have been named in a punny way?

I heard speculation that set 40358 "Bean There, Donut That" is the only set that LEGO ever produced where the name of the set is also a joke. Is that true? Or are there other sets names that contain ...
4
votes
1answer
221 views

Help identify this ship section

Can you help identify this ship section from a box of LEGO parts we have now? It looks like it was in an epic battle.
3
votes
1answer
44 views

How can I have EV3 Commander App continue running the motor when I release the slider?

I'd like to control a drawing robot that I am building with EV3 Commander App. The problem is that EV3 Commander App stops the motor as soon as I release the slider. Is there an option with EV3 ...

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