All Questions

I want to get started on LEGO trains. However when I look up which trains sets are available I find only two: 60198 Cargo Train 60197 Passenger Train Does that mean I can only buy two different ...

I have been programming a complex file for my lego NXT. I accidentally deleted my file from the PC, but it is still available on my NXT brick. Is there any way that I can retrieve the file from my NXT ...

I'm not sure if this is the correct site for this question. I'm new to LEGO and just acquired an older LEGO Star War Set 4504 Millennium Falcon. The box was open and the sealed bags are not numbered. ...

With the release of the new Harry Potter Hogwarts Castle (set: 71043) has 6,020 pieces. I believe this a subtle reference (Easter egg) to the Lego set 6020, one of the first sets to ever have a ...

I'm curious what the internals of the new Powered Up hub look like? What components are inside?

Despite helpful prior answers about squeezing polybags to determine contents, the new Unikitty! series seems pretty immune to this sort of the effort since all of them are in one of 3 shapes and there ...

I've been building the new app-controlled Batmobile. As far as I can tell, step 34 shows many more elements in the parts list than are actually used in the build. What is going on here?

I'm buying a used set (42083 to be specific) and I would like to sort the parts in their original module bags. However, I can only find the complete part list, not the parts per module. Does anyone ...

My kiddo has recently been given a random parts grab bag, and we’re unable to ID one particular item, of which he has three: anyone know this part?

I intend to buy this train set for my daughter. Apparently, the locomotive can communicate with an app via a bluetooth connection. My question is: is there any documentation available so that I can ...

I recently got the Lego Mindstorms EV3 kit. I wanted to make a self driving car, but I got stuck on the building part. I saw another question like this, however it was for NXT and had no decent ...

Can someone tell me what it is so I can get instructions for it. All pieces are shown. I removed a couple I hope can help identify it

My son's favorite LEGO minifig head, came in a box of loose LEGO. I have searched hundreds of images and have not found a match.

I'm looking to ID 2 sets I had as a kid, One was a rally car, it was white with a red base, the wheel centres were red. The driver I think was white upper, red or white lower and with a red helmet ...

Any ideas? Thinking star wars.

I have the LEGO Boost kit, and I'm wondering if I can control it directly using the Powered Up app rather than programming it using the Boost app. Is this possible?

I am looking to build a ladder. I saw part 62113 and was wondering if its possible to connect part 62113? Here's what that part looks like:

In a old LEGO box lost in my garage I found pieces and instructions of various M-Tron models: 6811 Pulsar Charger 6833 Beacon Tracer 6877 Vector Detector 6896 Celestial Forager 6923 Particle Ionizer ...

Is the motor that comes with the technic power functions motor set (8293) and the stand alone motor 8883 the same? We have just built the Lego Creator 10261 roller coaster set and it specifies a 8883 ...

I'm wanting an answer if anyone has swapped the PF L motors in the 4x4 crawler to PF XL motors and if this increases the speed or not.

Any help gratefully received. I think it's a Star Wars set.

I have just brought these mini figures and was wondering if anyone could identify them?

What extra motors and sensors can be bought to extend the LEGO Boost (17101) set? I have heard the WeDo motors have the same connector but not if they are compatible with the Boost hub. Are they ...

I have a collection of LEGO sets, from which only the B model is assembled and the remaining pieces have been lost. What is the easiest way to figure out which pieces are missing from these sets?

I have 2 colour sensors on ports 1 and 4 which often switch off randomly during my code runs. How can this be prevented since this can stop my line following or other programs to work properly?

I'm in the process of moving, and I have come upon my old collection of LEGO magazines. All from the early 2000s, I have the LEGO Magazine, the Mania Magazine, and a bunch of Shop-at-Home catalogues. ...

I'd like to be able to transfer Boost programs from one device to another and to back them up. Is this possible? Ideally I'd like some app-supported mechanism for this. I have a Google Pixel, a ...

I am really puzzled by my small car build with balloon tires (55976). I tried swapping between an XL and an M (PF) motor, both geared down (up?) to about the same torque (I tested by how sleep a slope ...

Any ideas what set they belong?

I want to buy another LEGO Technic set therefore I'm trying to analyze the challenge to price ratio of different sets. I first thought that the part count may be somewhat proportional to challenge and ...

I have a number of old technic motors and battery boxes I would like to use however the wires have disintegrated in storage to the point that the metal conductors touch and short out. Does anybody ...

This brick was found in a selection of unopened LEGO bags left with an instruction book that were donated to my mother's workplace. Bags did not correspond to the book and and as such I am left at an ...

A sweet neighbor kid handed down his LEGO collection to us. I’ve been able to find quite a few sets by searching Google, but this one has me stumped.

I've built a steering wheel that checks the servomotor position using NXC function - MotorRotationCount(). Now, I want to send that position to second brick using Bluetooth and apply that servomotor ...

I wanna know what programs they used to make the videos the old LEGO videogames like the 2008 Lego Batman, 2007 Lego Star Wars, and maybe the 2011 Lego Star Wars for a little modern-ish feel. I want ...

Could anyone please tell me the name/number of the LEGO component used for the cat's eyes?

I have this two bricks I got as a present a while ago, and wanted to know a bit more about them. Things I noticed: The material is not entirely hard as today's plastic bricks, some small marks can ...

Had this baby for 20 years at this point. Some rubber rot on the cables, but other than that, the set's in great shape. RCX 1.0 with DC-in port. Serial tower. Fresh batteries in tower and RCX. I ...

Is it a bullet-point list? Or some kind of poem? Or non-words? LEGO Tile 1 x 1 with Black Writing (Sticky Note / Post-It) with Groove (25389)

Bag came with no instructions. Just these 103 pcs

Can you please identify the sub assemblies from the pictures. Is this part of a set or something someone just build? As you can see there are a lot of missing pieces. Do they ring a bell to anyone? ...

When I build a skyscraper out of LEGO and the floor above is weak do I remove the flooring from above and a pillar underneath and then put the floor back or something?

Can anyone help identify which set this bag comes from?

I want to know which sets this piece is from. It's 2x2 in size, no writing on it except for an S or 8 in the hole. I've tried googling terms such as chrome/silver indian emblem/plaque to no avail.

Can someone explain to me what 38507: RAIL ACCESSORY, NO. 4 (#6225519) is for? I've got this in the new Duplo Train accessory #10882 and can't figure out what it does :S

Last weekend while visiting Legoland Germany, we found the following pieces in the discount crates: They are white 1x1 bricks, with the top part (and stud) in light bluish gray. What would be the ...

When sound block is used and play file is selected nothing happens. No sounds are available to select. I have uninstalled and reinstalled the ev3 software, but the problem persists.

I recently purchased quite a few Legos from a neighbor. They are a bit of a mess with no instructions. I did find a couple bags that had not been opened. This is bag 2 and 3 and a couple smaller bags. ...

This is definitely one of the strangest LEGO pieces I've ever found. The wire caps are both stamped LEGO, one would take half (or quarter) a pin and one a small ball. What is it and where does it ...

What is this piece? I see it being sold with 9v train tracks