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5
votes
2answers
129 views

Any (small) Lego Technic parts not in whole units?

This is aimed at building a GBC module, not to reproduce an actual engine. I need a piston type construction with stroke length of 3 units, which means a crankshaft radius of 1 1/2 units. Are there ...
0
votes
0answers
59 views

Is there any software except SR 3D Builder with the ability to simulate the interaction of gears that doesn't require scripting?

I'm aware that one can do that in LDCad but with scripting. Should I invest my time in learning SR 3D Builder or is there any other option? It's just not a very intuitive software for me but I might ...
1
vote
1answer
125 views

How to make of point coordinate system for EV3

I'm trying to make a internal coordinate system for an EV3 Python project I'm doing, but at a complete loss on how to do it. It needs to keep track of how it moves (with wheels) in an X, Y coordinate ...
3
votes
1answer
120 views

Please help identify set from this picture of a part built boat

I have a part built boat,but need help in identifying the set so we can complete the build. Thanks
1
vote
1answer
76 views

Please help with set identification from the picture of this part made car

please help identify the set that this car is part of.
1
vote
1answer
127 views

Can anyone help me identify what set this bag belonds to?

Can anyone help me identify which Lego set this bag belongs to (It has two smaller bags inside)?
1
vote
0answers
49 views

Custom extension cables for Light Stax?

Recently, I got the S-12012 Light Stax kit with 50 (!) light bricks. They are different from those described in this question, but they are much cheaper, colorful and with blinking/pulsating effects. ...
0
votes
1answer
80 views

Can someone help identify the full set from this part made car

I have loads of complete Lego sets, distributed into bags and without instructions.
0
votes
1answer
121 views

Run Code From PC

https://www.ev3dev.org/projects/2014/05/09/Python-Rubiks-Cube-Solver/ The other one gives a solution in around 20 steps, but takes around 500 MB of memory, so I need to run it on a computer How do I ...
33
votes
13answers
11k views

What LEGO pieces have “real-world” functionality?

I have noticed that there are a few LEGO pieces that also function in the "real-world." For example, the 10830c01 Magnifying Glass can actually magnify. Another example is the 70001pb01 Compass, ...
3
votes
1answer
157 views

What set does this belong to?

I just received a huge box of LEGO's. There are some unique pieces such as this one. On the back of this piece is the number AM02232. What are my options of figuring out its set and finding ...
2
votes
0answers
181 views

How can you get the pipes on Steamboat Willie to work reliably?

We recently began building 21317 Steamboat Willie. We've got it mostly built, but the pipes keep getting stuck. The rear one works, but the front one keeps getting stuck up and won't go down. We've ...
1
vote
1answer
103 views

Star Wars set ID 2

This part appears to be one side of a Wookie ship of some sort and these parts appear to be from one set but I am not sure this appears to be an Imperial ship of some sort and this is from a walker ...
0
votes
1answer
83 views

Star Wars set identification 1

I recently bought a big box of LEGO that have some broken LEGO Star Wars sets and I need help identifying them. Some are fairly complete and some are just pieces. The first 2 are almost complete so it ...
1
vote
2answers
108 views

What does this symbol on the EV3 Brick mean?

I can’t figure out how to get my R3PTAR to open and close it’s mouth to bite. I keep getting this symbol. What does it mean?
4
votes
1answer
256 views

What material is the LEGO laptop made of?

What material is the LEGO laptop piece made of? It does not feel like their normal rubber and it certainty doesn't feel like ABS.
0
votes
0answers
41 views

EV3 Brick is Stuck on Red

The EV3 brick started by flashing red. Then started where it is stuck on two red buttons. Have changed batteries, and manual reset with no change.
3
votes
2answers
148 views

What is the fastest way to estimate the number of pieces in a large collection?

I have a relatively large LEGO collection and I would like to know roughly how many pieces I have; however, it would not be worth my time to count each piece individually. Is there a faster way to ...
0
votes
1answer
112 views

Why are the Lego boxes so unnecessary big? [duplicate]

I ask myself often when buying Lego why the boxes are so much bigger than the space that is needed for the contained content. It seems a waste in terms of material and logistics. I do store the boxes ...
2
votes
1answer
130 views

What is this part?

I found about a dozen of these in a mixed bunch of LEGO. Are they actual LEGO pieces or another brand? They are actually white, the pink color is a lighting error.
2
votes
0answers
39 views

MindSqualls - can I connect more than one NXT brick using USB?

To access my NXT brick connected via USB with the MindSqualls library, I do the following: var brick = new McNxtBrick(NxtCommLinkType.USB, 0); The 0 is serialPortNr. If I were to buy a second NXT ...
4
votes
1answer
166 views

Lego track switch doesn't close properly

Just two weeks ago, my kid got a 60198 cargo train and we added a set of 60238 switching tracks. With two (out of three) switches we have the problem that the switch doesn't close properly anymore to ...
5
votes
1answer
129 views

Identify this fire truck set?

Can anyone identify this fire truck set? I’d like to find the instructions before it gets taken apart.
2
votes
1answer
46 views

Looking for custom EV3 block to control LEDs independently

The EV3 brick has 2 LED sets, one on the left side of the button panel and one on the right. Software such as python for ev3dev let's you control them both individually, the normal EV3-G LED block ...
6
votes
3answers
266 views

Is there any rhyme or reason to the sizing of LEGO boxes?

Recently, I have noticed that there appears to be no rhyme or reason to the sizing of any given LEGO set box. For example, in the picture below, you can see three sets that have a similar amount of ...
1
vote
0answers
26 views

EV3 Ultrasonic Sensor programm

How can I download the ultrasonic sensor and open it? I want to open it on a laptop running Windows 7. Which program must I download?
0
votes
0answers
45 views

Using switch block with Hitechnic color block

Can I compare the Hitechnic block --> measure --> color output in a switch block? For example, if the Hitechnic color sensor is seeing black, then do something, else do another thing. If not, then how ...
3
votes
2answers
100 views

What is a color sensor and where do you get it?

I have an NXT but I don’t know how to make it detect colors, all it does is say “wait”. My set includes a light sensor but I heard some YouTube videos say there was a lego “color” sensor. Does LEGO ...
8
votes
2answers
330 views

Has this building technique been used in an official set?

One of my favorite building techniques is to place a Technic pin into the anti-studs of a brick. This allows two bricks to attach bottom-to-bottom. It's a pretty secure connection, but I'm not sure ...
5
votes
1answer
153 views

How can I separate 1 x 1 round from boat mast base 4 x 4?

I have two pieces I cannot seem to separate. The parts in question are: 3062b: Brick, Round 1 x 1 Open Stud 6067: Black Boat Mast Section Base 4 x 4 x 1 2/3 The 1 x 1 is transparent in this case, in ...
1
vote
1answer
88 views

can 2 powered up train motor be plugged into one hub

I have set #60198 and it comes with one powered up motor. I'm hauling many many cars and one motor isn't enough any more. I see there is a slot for "B" on the hub. Is it possible to plug in another ...
5
votes
1answer
198 views

Mystery brick - cannot find instructions with this piece mentioned

I have a bunch of LEGO bricks from the years 1975 - 2016. There are a lot of obscure pieces in my collection, but this piece is so obscure that I have no idea what it goes to. If anyone can help it ...
2
votes
0answers
60 views

Rearing off to the left without telling it to

I've started to build a robot, but when it drives it veers off to the left even though I'm just telling it to go straight. I think I need to do something to the motors but I don't know what or how. I'...
7
votes
3answers
120 views

How can I separate an 8H antenna from a modified 1×1 with ring?

I have two parts which are stuck together: 4081b: Plate, modified 1×1 with clip light – thick ring 2569/25699/47094: Antenna whip 8H The parts have been assembled like this for about 20 years and ...
5
votes
1answer
213 views

What does the acronym SPUA stand for?

I once heard someone use the acronym SPUA while referring to a LEGO piece. What does that stand for and what does it mean?
5
votes
1answer
265 views

Is this an early Duplo mini figure?

Just wondering if you have ever seen this figure before? I've had it since I was a kid in the early 80's, and it's always lived with my lego (which was mostly hand-me-downs from my older brother - ie ...
0
votes
0answers
34 views

Are there any coding platforms for my NXT available for my IPad?

Can anyone tell me any app on the App Store so I can program my NXT? Please let it not be one of those ones that you have to pay or one of those that are just controllers. Thanks for your help.
6
votes
2answers
229 views

Has LEGO Made A Minifigure-Scale Shopping Cart Piece?

For the current MOC I am working on, I am going to need a LEGO Minifigure-scale shopping cart. I thought I had seen one in an official set, but after searching Bricklink extensively, I am now not sure ...
1
vote
1answer
84 views

My DUPLO railroad engine stops after 20cm

My DUPLO railroad engine stops after 20cm moving. I suppose the sensor in the front axle is damaged. So is it possible to repair it?
2
votes
2answers
126 views

Seeking HiTechnic Color Sensor V2 control block for EV3-G

I'm looking for the EV3-G control block for the HiTechnic Color Sensor V2, previously distributed by HiTechnic (https://www.hitechnic.com/cgi-bin/commerce.cgi?key=NCO1038&preadd=action), ...
2
votes
1answer
131 views

Can you identify this brick?

There are about 20 of these bricks in the set. Nothing else that stands out as unique. This may be a long shot.
2
votes
1answer
119 views

Can the experts Identify these sets?

Newbie here. If you are sick of these posts, sorry. A friend gave us a bunch of sets with only a few sets of instructions. We were able to figure out a few of them. Not sure what these are.
1
vote
0answers
44 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 ...
0
votes
0answers
47 views

LEGO train 7898 Arduino Library?

So I want to control the green 7898 train with an Arduino, but the library I have installed doesn't support this specific train. My question is if anyone knows a library that does?
2
votes
1answer
35 views

Submodel does not show properly in LPub3D

I am new to digital LEGO models and building instructions with LPub3D. In order to find my way around submodels I have created this very simple dummy ldraw model: 0 FILE new model.ldr 0 Name: new ...
3
votes
1answer
80 views

Anyone have the control block for the hitechnic color sensors?

I'm just wondering if anyone has a copy of the control block for the hitechnic color sensor v2? I'll take a v1 if you have that because I'm desperate at this point. The downloads page for it is down ...
3
votes
3answers
220 views

My LEGO character's helmet keeps falling off… Is there any way to fix?

My figure won't keep its helmet on and if I get it one it is very loose and will spin around.
2
votes
1answer
110 views

How to include submodel into main model in LeoCAD?

In LeoCAD I can create multiple submodels. But how do I merge them or integrate one into the other? The release notes suggest that this is possible, but I can't seem to find out or find resources ...
4
votes
1answer
156 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 ...
0
votes
1answer
53 views

Bionicle parts for own bionicle figure

I need Bionicle parts to make my own Bionicle. Any good set recommendations? Any LEGO set will do. It does not have to be Bionicle.

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