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Questions tagged [compatibility]

Questions about the inter-compatibility of different brick sets, or between bricks and some other objects.

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5 votes
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Which Hot Wheels vehicles are compatible with LEGO bricks?

I recently came across this Hot Wheels vehicle: It includes a pair of LEGO-compatible elements along with studs that can be used to customize the vehicle. Are there other Hot Wheels vehicles that are ...
jncraton's user avatar
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6 votes
0 answers
94 views

Connections for windup key holes?

I recently bought a set with a Windup Key (piece 29979/79812) and took note of its holes since they're slightly smaller than the standard rod / minifig accessory diameter. After an (admittedly brief) ...
BambooleanLogic's user avatar
8 votes
1 answer
537 views

Compatibility of sports ramps

Are these relatively recent "sport ramps": https://www.bricklink.com/v2/catalog/catalogitem.page?P=75538 compatible with these older "sport ramps" https://www.bricklink.com/v2/...
Michael Verschaeve's user avatar
1 vote
1 answer
221 views

Control MoveHub (Boost) and Mindstorms Inventor Hub over one app

I'd like to control Lego Boost (Move)Hub and the mindstorms inventor hub with one app. I know that it is probably possible with python, but my son is not yet ready to programm in a fully fledged ...
edi's user avatar
  • 113
3 votes
1 answer
257 views

How can I stop bricks 'skating' over plates?

I've just read all around the question about 'clutch power' from nine years ago and the changing molds, both here and on Rebrickable, but these don't answer my problem. Has anyone else had the problem ...
MocBird's user avatar
  • 143
8 votes
1 answer
931 views

Adapters for Lego Duplo and Mega Bloks

Similar to this question I am interested in combining Duplo Lego with Mega Bloks. I want to have full compatibility, i.e. being able to put Duplo on top of Mega Bloks, which requires some type of ...
Kjara's user avatar
  • 181
3 votes
1 answer
227 views

Are LEGO Pneumatics gen 1 and gen 2 compatible?

I think they are at least partially compatible, but how much so? Can generation 1 and generation 2 cylinders easily and effectively be combined in one pneumatic pipe system? I.e. a set of pipes, tubes ...
Yodo's user avatar
  • 111
4 votes
1 answer
120 views

Accessing an EV3 brick on computer without MINDSTORMS Home

I am trying to hack my EV3, and I know I can make it execute commands I send via USB thanks to the communication developer kit. When I connect it via USB, it is only visible by the MINSTORMS Home app ...
Oxymore-coder's user avatar
4 votes
1 answer
165 views

Looking for a big set of tires and rims for my monster truck - really beefy tires

I'm looking for big beefy tires and rims for my large Technic monster truck. I also need something for off-roading.
Hunter Mentch's user avatar
5 votes
1 answer
999 views

What is the correct snowspeeder to pair with the AT-AT?

Wanting to replicate the scene from Empire Strikes Back where Luke is flying a snowspeeder on Hoth and harpoons an AT-AT. I have already purchased and built the AT-AT model number 75288 but I'm having ...
DᴀʀᴛʜVᴀᴅᴇʀ's user avatar
5 votes
2 answers
154 views

What does 18853 (Friends flower) connect to besides 37695 (Plant stem with 3 leaves) or 11609 (Friends accessories star)?

What does 18853 (Friends flower) connect to besides 37695 (Plant stem with 3 leaves) or 11609 (Friends accessories star)? Is there a good way to attach it to common plant stems (3741) like this one:
crimson30's user avatar
  • 474
5 votes
1 answer
543 views

Xbox to Robot Inventor?

Is it possible to connect an Xbox controller directly to the Lego Robot Inventor(51515) intelligent brick?
ABBABAB's user avatar
  • 51
1 vote
0 answers
98 views

LEGO Movie projector [closed]

A few years ago, I built a movie projector out of LEGO. I posted pictures of it in Wikipedia. In the notes that explain these images, I explain that the width of the film is 31.4 mm. Is it the right ...
Bernard de Go Mars's user avatar
4 votes
1 answer
527 views

Is there any cross compatibility between 51515 and 31313?

I'm thinking of buying another Mindstorms set, and I already have a 31313. I don't want to spend $370 just to learn they are completely incapable of communicating with each other, so if you could tell ...
technicguy1's user avatar
8 votes
2 answers
661 views

Why are there always holes in Duplo bricks?

For some reason, all the Duplo bricks that exist out there have holes in their studs. I haven't seen a Duplo brick that doesn't have holes in the studs, and I doubt such thing even exists. System ...
mindstormsboi's user avatar
3 votes
2 answers
5k views

Can Lego Remote Control 88010 control Lego Technic Hub 88012?

I have been exploring the new Bluetooth Technic smart hubs with the Control+ app and PoweredUp app. I would like to also use a physical remote. I have the Technic smart hubs that come with the ...
Jeff's user avatar
  • 41
9 votes
0 answers
330 views

Are LEGO Quatro compatible with larger bricks? Soft Bricks or other?

There is a nice discussion here on LEGO+Duplo+Quatro compatibility. I posted what I found here where a LEGO storage block is the right dimension to be double a Quatro (4x Duplo, 8x normal). However, ...
Special Ed's user avatar
14 votes
1 answer
3k views

Will Duplo trains fit onto a regular 6 stud LEGO track?

There's a thread here establishing that regular LEGO trains arguably fit onto Duplo track, but have trouble with underbelly clearance. What about the opposite? Will a Duplo train fit onto six-stud ...
Robert Columbia's user avatar
13 votes
3 answers
1k views

Why doesn’t part 30099 fit into the System?

Part 30099 - Brick Arch 1x5x4 Inverted doesn’t seem to fit into the LEGO system. I cannot find a part that fits on the bottom stud and provides continuity to the concave slope of the arch. A tile is ...
Phil B.'s user avatar
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7 votes
1 answer
1k views

Will the Duplo train track extension set 10872 work with Duplo train set 2700?

I am thinking about buying the Duplo train expansion set 10872 Train Bridge and Tracks for my niece, but her primary Duplo train set is actually a vintage 1983 2700 Freight Train set from her father's ...
Robert Columbia's user avatar
3 votes
1 answer
351 views

How can the A and B models of the 42055 Bucket Wheel Excavator be modded to fit together?

The 42055 Bucket Wheel Excavator has a B model, a mobile aggregate grader: which shares the mining theme with the A model and seems to be designed to sort the mixed output of the excavator into ...
zovits's user avatar
  • 16.7k
7 votes
2 answers
1k views

Compatibility between vintage (80s/90s) Technic and current parts (motors etc)

I've recently got my old Technic out for my daughter (who's a little young for her own, but her Friends now drive around in a tank). If I start to acquire more, and more sophisticated, motors and ...
Chris H's user avatar
  • 637
2 votes
2 answers
648 views

Technic beam centering for beam with even length

I design stereo camera housing for robotics (3d printing). I want the housing to be able to connect to both LEGO Classic and LEGO Technic blocks. I designed 2 groups of 4x4 holes/pins on the bottom/...
Kozuch's user avatar
  • 239
4 votes
1 answer
256 views

How to best measure compatibility among Lego and clones?

A top complaint I see about clone brands is the quality: specifically the flimsiness of the plastic, premature discoloration, or poor fitting with either other bricks of the same brand or with Lego. I'...
Matt Chambers's user avatar
5 votes
2 answers
229 views

Are the different LEGO Xtra play mats designed to be used together?

It appears that the LEGO Xtra play mats come in three different varieties: It is clear that these are physically compatible, but are these intended to be used together, or are the three locales ...
jncraton's user avatar
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5 votes
1 answer
5k views

Is there a way to convert stud.io files into LDD files?

Is there a way to download stud.io files from Bricklink and convert them into a format that Lego Digital Designer understands?
John Slegers's user avatar
  • 1,105
2 votes
0 answers
124 views

Makeblock and LEGO PF cable synthesis

My 10yo son and I have ventured into the realm of taking our LEGO hobby up a notch with robotics. We have built the makeblock mbot and adapted LEGO bricks and want to incorporate the Power Functions ...
Jarod Thornton's user avatar
4 votes
1 answer
270 views

Is it possible to build 3 or more concentric circles / nested circles / telescoping pieces?

There are round 2x2 pieces. There are round 4x4 pieces with round 2x2 holes, the 2x2 can slide/rotate inside of it. There are "macaroni" pieces to make an 8x8 circle with a 6x6 hole. But are there no ...
Seth's user avatar
  • 203
10 votes
4 answers
17k views

How to install Firmware 1.10E on an EV3 home/retail edition brick

If and how can you install firmware 1.10E on an EV3 brick from an home/retail edition set (instead of an education set)? Updates 1.0E9 are only recognized from the Mindstorm software, also with ...
Rxl's user avatar
  • 113
12 votes
2 answers
395 views

Are LEGO Clikits elements compatible with the brick system?

Are LEGO Clikits elements in some way compatible with the LEGO brick system?
fabian's user avatar
  • 1,285
6 votes
1 answer
5k 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 ...
Andrea's user avatar
  • 61
5 votes
1 answer
557 views

Is there a drop-in replacement for 4275 + 4276 hinge?

Both parts are not in production since 2008. Hinges in my sets are in various conditions, some of them are way too loose to my liking. No ones fault, I was active kid who built a lot. But now it's ...
Mołot's user avatar
  • 1,409
7 votes
1 answer
175 views

Can I still motorize Universal Building Set 8034 and other from that time with modern elements?

Set 8034 was supposed to be motorized using 8700. Of course, this is way outdated and kinda pointless to buy motor this old. Current set for this purpose is 8293. Problem is, old motor was 5 studs ...
Mołot's user avatar
  • 1,409
3 votes
1 answer
269 views

Is 32013 a drop-in replacement for 3651?

In my old sets there are many 3651 parts that are broken. As far as I remember, these sets do not use studs on the piece. Per this answer, new piece with the same function is 32013: Can I just buy ...
Mołot's user avatar
  • 1,409
5 votes
3 answers
1k views

Compatibility of maxi sized Mega Bloks

Maxi-size Mega Bloks are larger than Duplo. As far as I can tell they have two times the stud pitch and much larger studs: What, if any, compatibility is there between the maxi-sized Mega Bloks and ...
Peter Green's user avatar
4 votes
1 answer
2k views

Can you interchange System and Technic LEGO?

My grandson would like to motorize his LEGO builds. Does the Technic motor pack only work with Technic LEGO or can he mix it with the regular sets that he already has? What should he start out with?
amanda's user avatar
  • 41
0 votes
1 answer
213 views

Are creative play sets compatible with Duplo?

Are are the blocks in the Creative Play sets compatible with LEGO Duplo blocks? Also, are they the same size as Duplo, or Juniors or in between?
Annie's user avatar
  • 1
3 votes
1 answer
484 views

What kind of track is the Emerald Night set compatible with?

According to What different types of lego train tracks exist?, there have been many different kinds of LEGO track. Which kind of track can I purchase that will be compatible with this train?
Village's user avatar
  • 747
6 votes
2 answers
2k views

Can the DUPLO My First Number Train fit on DUPLO tracks?

I have the My First Number Train set, pictured here. This set did not come with track. Other sets, such as My First Train set, pictured here, do come with track, but the wheels look different. Can ...
Village's user avatar
  • 747
3 votes
2 answers
2k views

Are there factories in China that produce raw LEGO-compatible blocks?

Nowadays Chinese are getting really good at making LEGO-compatible blocks. Some sets are really unique and of very good quality. But still - we got our own ideas. I wonder does anyone here know any ...
jayarjo's user avatar
  • 231
3 votes
2 answers
7k views

Are COGO and LEGO bricks compatible?

Is COGO compatible with LEGO sets, that is can I combine parts from both packages? My kid got a COGO set on his birthday recently, which we did not open because I think we can return and exchange (for ...
zsn's user avatar
  • 59
9 votes
1 answer
483 views

Technic 8858 Rebel Wrecker alternate model impossible to build?

I don't mean "difficult", I mean it appears to have an actually impossible instruction. Or am I missing something obvious? Here's the deal (pardon my lack of standard names for parts): I recently ...
Chris N's user avatar
  • 191
7 votes
3 answers
8k views

Are there bricks sized between LEGO (classic) and DUPLO?

I am wondering whether there is a brick-type construction block toys on the market that would be sized between the LEGO (classic/original) and LEGO DUPLO. More specifically I am looking for a 3/4 ...
Kozuch's user avatar
  • 239
14 votes
6 answers
75k views

What alternative LEGO-compatible toys are avaliable?

My kids love LEGO toys, but we find them expensive. Often, they get all the sets of a series, but keep asking for something similar. We have thus begun buying Mega Bloks and Kre-O, which include some ...
Giuseppe Biondi-Zoccai's user avatar
2 votes
3 answers
2k views

Does the Mindstorms EV3 software work on macOS Sierra?

I guess this is a continuation of these two questions: Does the Mindstorms EV3 software run on OS X El Capitan? Is the LEGO Midstorms EV3 software compatible with OS X yosemite? macOS Sierra was ...
user avatar
8 votes
2 answers
1k views

Why are Technic holes slightly smaller than studs?

We know that Lego studs almost never should be placed into Technic holes because studs are slightly larger and will stress the hole. However, why is there this discrepancy? Surely when Lego created ...
jamesdlin's user avatar
  • 753
4 votes
1 answer
608 views

Connecting LEGO WeDo USB hub to portable Power Bank

Is it possible to connect the LEGO usb hub from education WeDo series to a portable power bank for power? WeDo USB Hub Portable Power Bank
user275517's user avatar
5 votes
1 answer
274 views

Working with Curved Bricks

I'm hoping to stack curved bricks. There are two slots along the edge to allow the bricks to be set on plates. These become unsightly when the bricks are stacked atop each other. Has anyone seen any ...
user7424's user avatar
0 votes
1 answer
75 views

Purchase of large blocks in South Africa

I have thousand's of small-single, two and four blocks but sometimes need to build larger structures and thus, would like to know were in South Africa I can purchase these larger blocks without all ...
Leonard's user avatar
4 votes
3 answers
847 views

Are Bandai "Figmes" compatible with LEGO?

According to gizmodo Bandai is releasing a new line of "Figmes" that look astounding similar to our beloved minifigs. Here is the set: And here is one close up: Close up the hands look even better, ...
chicks's user avatar
  • 5,273