All Questions

0
votes
0answers
6 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?
0
votes
0answers
3 views

Seeking HiTechnic Color Sensor V2 control block

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), ...
0
votes
1answer
10 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.
1
vote
1answer
27 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
28 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
26 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
21 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
38 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
91 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
44 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 ...
2
votes
1answer
108 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
50 views

How to sell and ship LEGO [closed]

Im super new to all of this. I have a huge collection but im looking to sell it, if you can run me through everything in detail that would be amazing! Narek
0
votes
1answer
35 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.
0
votes
0answers
22 views

Transforming Lego PF protocool from philohome to Pronto Hex?

I was trying to transform the Lego PF codes, which are shown in this document, to pronto HEX (a kind of IR code format), but I wasn't able to do that. Does anyone have any idea how to transform this ...
3
votes
2answers
90 views

Which part# goes to these LEGO wedge pieces?

I'm trying to identify these two parts, plus the color on the greenish one.
1
vote
5answers
82 views

Do they have every brick type or just the basics at the PaB wall?

I am looking for a specific piece and I don’t know if they will have it. Is it any piece or just basic ones like 2x4’s?
2
votes
0answers
23 views

Improving EV3 Screen Readability

I often have a hard time reading the EV3’s LCD display. I presume that I’m not the only one who has experienced this issue. Is there a way to improve its readability? For example, are there any good ...
1
vote
1answer
66 views

Helmet with flip-down binoculars is not in any of the databases

The helmet has 10198 inside but I cannot find that on any of the usual part databases. Does anyone have any ideas?
4
votes
1answer
95 views

Who are these Figures?

Does anyone recognise the two larger LEGO figures? They are from sets released in the 80’s and I am trying to find out what sets they’re from so I can hopefully build the sets with my son. One is a ...
1
vote
2answers
36 views

Color sensor reliable?

I am experimenting with the light sensor shipped within the mindstorms ev3 package. My Problem is that the bot is standing quiet at one place. Each value returned by sensor is different, although the ...
2
votes
1answer
48 views

Two motors are driven forward, why are they rotating in different directions?

I have the Lego Mindstorms EV3 Pack and built a simple car with 3 wheels. The back whels are motorized. When I run the following code: Motor.A.backward(); Motor.D.Backward(); both motors are ...
0
votes
1answer
46 views

Using two color sensors simultaneously

I am new to the world of robotics, and I'm preparing a new project with my students. Our goal is to make a self driving robot that can read colored signs from the road in order to turn right or left a ...
5
votes
1answer
350 views

Is there a hobbyist standard for Trains track modules?

Many non-LEGO model railroaders have standardized track module standards allowing for interchangeability of (often highly-decorated) track sections (due to availability, damage, scheduling, etc.) as ...
4
votes
2answers
96 views

Best Way To Make This Panel Flush With The Wall?

I would like to use the 8x8 grates on the side of the building (studs out) as window pieces so there is nothing behind them. I'm wondering if there is a better way to have a more stable connection. I'...
5
votes
0answers
89 views

Why do Star Wars sets include the Disney logo/brand name while Marvel Super Heroes sets do not?

I have noticed that LEGO sets from the past few years of their Star Wars theme include a prominent, or at least noticeable, Disney logo, typically in one of the corners. For example, see this Imperial ...
2
votes
1answer
95 views

What’s this piece and is it rare

I don’t know what this piece is and where it’s from
3
votes
1answer
81 views

Help identifying a 1x1 LEGO part with clip on top

The numbers inside this brick are 01 B02. The brick is a 1 x 1 black plate with a white clip inserted into a hole. I have searched Bricklink with no success. I have also searched Google. Hoping ...
1
vote
1answer
59 views

What minifigure has a textured lab coat?

With body on legs it will not fully sit down. From a tote of LEGO parts my kids played with in jr high or high school. They graduated in 2008.
1
vote
2answers
63 views

Is there any easy, documented or official way to replace pullback mechanism with Motor Set 8293

There are many Technic cars with a pullback mechanism, like 42059, 42073 or 42072. Is there any systematic, easy, documented or official way to replace the pullback mechanism with the LEGO Technic ...
0
votes
2answers
47 views

Can't link variable inside a switch when creating a new block

I have a problem when connecting the variable (from the create a block) to a variable in the function because it's inside a switch. How can I link them? I want to connect the variable to each (20) in ...
1
vote
1answer
59 views

black pants (jeans?) with silver/gray pockets and gold dot

Do you recognize these pants? Are they on Bricklink, etc.? (I looked on Bricklink and Rebrickable but couldn't spot a match.)
0
votes
1answer
23 views

LEGO Mindstorm EV3 Line-With-Gaps Follower? [Robotc]

Trying to create an algorithm / code in order to get my robot to follow a track which it currently can do, using a color sensor and following the inside edge. So I'm wondering how to transition to the ...
0
votes
0answers
28 views

EV3 Spinner factory not moving in the right order

We've built a spinner factory going by the original instructions in the Lego Mindstorms EV3 Education Software, and downloaded the program for it onto the bricks, the Spinner factory moves around, the ...
2
votes
1answer
65 views

Lego adventurers set with bridge, board with mountains?

I'm looking to identify a Lego adventurers set. (At least I'm pretty sure it's adventurers, or a similar theme - Orient Express etc). The set has a mountain board, with a river underneath. (If you ...
0
votes
1answer
85 views

Identify set(s) from approximately 20 bags of LEGO

I bought a storage unit at auction. There were approx 20 sealed bags of LEGO in the unit. Each bag has a number on it. I'm trying to find out if I have a complete set so I may sell them. Is there a ...
6
votes
2answers
88 views

Mecha Rail Launchpad Building techniques?

Another mecha question, but this time, at least I think, is not so intense as my last question. I've decided to take my biggest and most ambitious LEGO project yet, a custom MOC of a Pacific Rim ...
2
votes
0answers
46 views

How to mirror an EV3 motor?

I want to get one EV3 large motor to copy the other. So if I move one half a rotation the other copies.
2
votes
1answer
96 views

Can you identify this handle-like LEGO piece?

Can anyone help me identify the name and part no of this piece? I’ve tried looking in BrickLink for handles, guns, bars. Can’t think of any other way to describe it.
0
votes
0answers
92 views

Half sized block

I know a standard block is 9.6mm tall and a plate is 1/3 of that at 3.2mm. I found several blocks that are 4.8mm tall or 1/2. What are they called? Are they still made and where can I get some?
1
vote
3answers
91 views

Why are different ID informations printed in the inside of the same sort of bricks?

While sorting old bricks I observed that the inscriptions printed inside show a different coding. As you can see the outside it is always a ordinary "1x2 tile with groove in good old Light Gray (item ...
0
votes
0answers
50 views

Please help identify this Ausini piece

The one at the bottom that looks like a rocket head or a projectile tip.
5
votes
1answer
87 views

How does one become a LEGO® Certified Professional?

The LEGO Group's official website has a page speaking about the "LEGO® Certified Professional" designation that a person can earn. It states: LEGO® Certified Professionals is a community-based ...
3
votes
1answer
63 views

Can the scabbard hold a castle sword

I wonder if the Dark Gray Minifigure, Weapon Sword, Shortsword part No: 3847a fits in the Minifigure, Utensil Scabbard with Shoulder Strap part No: 95348 Scabbard on bricklink Sword on bricklink
1
vote
1answer
22 views

How to connect an NXT brick to the LEGO programmer application on an iPad?

Can you connect a NXT brick to an iPad via either USB cable or bluetooth? For me neither seem to work even though the EV3 brick (and the LEGO programmer application) should be backwards compatible. ...
0
votes
1answer
84 views

Where to get 3D files for LEGO bricks?

I am constantly in search for a particular rare brick from the 1990's which is ridiculously expensive on BrickLink and also hard to get. So I am thinking about printing it on a 3D printer to be able ...
1
vote
0answers
61 views

How to deal with hydrogen peroxide after de-yellowing?

I was able to remove the annoying yellowing effect from old white and lightgray bricks wiht the usage of hydrogen peroxide. With great results I have to say . Now I wonder what to do with the ...
1
vote
0answers
14 views

iNXTG app programming NXT from ipad

I'm trying to find the old iNXTG to program NXT bricks via iPad but it is no longer available in the Apple Store. Does anyone know if there exists an archive for programs like that? The problem is ...
2
votes
1answer
55 views

Help identifying set from 3 sealed bags with Star Wars figs

I got these three bags in a lot. Looks like there are two snow troopers and bag 4 has a bunch of fluorescent green circle pieces. Any help would be appreciated for this first time poster.
0
votes
1answer
107 views

135149 is all info I have

My son got some LEGO bricks in a bag as a present from good will, but no instructions were included. The only info I have are numbers on the bag 135149 and 2011. One of the small pieces has 62361. But ...
1
vote
1answer
73 views

Is it possible to sand/polish LEGO bricks?

I have an old white and rare brick which got scratches and dirtying which I cannot wash away. Any ideas on how to clean it? I thought about fine sanding or polishing but I am afraid that I damage the ...

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