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10
votes
5answers
9k views

RCX firmware download problem

I hope someone can help me with a problem with getting an original RCX 1.0 system working with a current PC. I bought the RCX 1.0 system back in (I think) 2000 but its been in storage a long time. In ...
7
votes
3answers
8k views

How do I move assembled LEGO sets?

How do I move large sets put together? We do not have the instructions or original box. We are moving from one home to another.
5
votes
1answer
177 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 ...
0
votes
1answer
66 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 ...
6
votes
10answers
2k views

Most inseparable combinations?

Some combinations of pieces are really hard to get apart – really hard. Can some answerers provide a list of “dangerous combos“? For example, a 2×2 with a round 2×2 on bottom. Also, if possible, ...
7
votes
3answers
112 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 ...
4
votes
1answer
156 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 ...
0
votes
0answers
32 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.
2
votes
0answers
57 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'...
4
votes
1answer
563 views

How to disassemble this small Technic turntable, combination of parts 99009 and 99010?

How should I non-destructively disassemble the following parts, when they are newly assembled? 99009 Light Bluish Gray Technic Turntable Small Bottom 99010 Black Technic Turntable Small Top
5
votes
1answer
177 views

What does the acronym SPUA stand for?

A while back, I heard someone use the acronym SPUA while referring to a LEGO piece. What does that stand for and what does it mean?
4
votes
3answers
739 views

Please help identify this vintage (but non-Lego) brick!

It's time to play the "what brick is this" game, and this time our contestant is definitely non-Lego, yet vintage. This brick was in a small lot of early-60's Samsonite Lego bricks, and I am assuming ...
2
votes
2answers
98 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
125 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
118 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
42 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 ...
3
votes
3answers
163 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.
0
votes
1answer
187 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 ...
2
votes
1answer
28 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
62 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 ...
0
votes
0answers
40 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
64 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
148 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 ...
1
vote
1answer
125 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 ...
1
vote
5answers
198 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?
9
votes
2answers
11k views

What are some “Illegal” LEGO combinations?

On Brothers Brick, there is an AFOL term for bad LEGO combos: Illegal. These combinations are "unconventional" and put stress on the bricks. Essentially, they are nonconformist, risky maneuvers, ...
4
votes
2answers
130 views

Which part# goes to these LEGO wedge pieces?

I'm trying to identify these two parts, plus the color on the greenish one.
0
votes
1answer
49 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.
2
votes
2answers
484 views

I'm missing a few pieces in my XingBao set

I just finished the second floor of XingBao's 5052 piece Maritime Museum. And while I'm pretty impressed with the overall quality of the building, I thusfar am missing 4 parts. Is there a way I can ...
0
votes
0answers
25 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 ...
5
votes
2answers
214 views

What is a good third party battery box and receiver?

I got the LEGO 4x4 crawler for my birthday and I love it. But there is one slight thing which I hate: it has terrible range when using it outside. I know there is BuWizz which is a third party ...
0
votes
2answers
65 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 ...
9
votes
5answers
1k views

Minifigure Hand broken and stuck in arm

A friend of mine gave me some of his old minifigures. As you guys can see, the hand of one of the figures is broken and a part of the hand is stuck in the arm. Do you have any ideas how to remove the ...
2
votes
1answer
101 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?
2
votes
0answers
37 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
2answers
50 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 ...
5
votes
1answer
140 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 ...
7
votes
0answers
262 views

Can anyone identify the brand of this non-LEGO brick

Hi folks I was hoping someone out there may recognise the brand of this block I found in the garden. I have been searching but the closest I can find are Locblocks - however this appears to have a ...
2
votes
1answer
58 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
79 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 ...
4
votes
2answers
123 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
1answer
365 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
4k 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
2answers
75 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 ...
8
votes
1answer
138 views

What is the tiny-hand most-friendly sets to migrate from duplo to lego?

How do I migrate a kid who's taken an interest in lego (with a preference to minifigures) from their current duplo collection? I'm tempted to buy just mini-figures, but have seen some "mini" sets ...
4
votes
1answer
123 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 ...
0
votes
1answer
40 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 ...
3
votes
2answers
242 views

Which LEGO figure is this?

Could somebody please identify the minifigure in the picture please? brighter picture initial picture
1
vote
1answer
87 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.
2
votes
1answer
127 views

What’s this piece and is it rare

I don’t know what this piece is and where it’s from

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