4
votes
1answer
1k views

How to sell massive, vintage and unsorted lego collection with manuals?

So I was a big LEGO collector as a child in the early 1990s. The genres I have are town/city, pirates, and castle. To store them, I broke them all down to fit into 2 giant plastic tubs. I still have ...
3
votes
2answers
277 views

21104 NASA Mars Curiosity Rover?

Has Lego made a public statement why they stopped producing the Curiosity Rover set? Each of its few production runs sold out in hours. Why won't they take my money? More importantly, how do I get a ...
4
votes
1answer
153 views

How can i use my iPhone to scan a barcode and send it to my EV3 brick?

I'm trying to build a sorter that scans the barcode on the brick using an iPhone and sorts it accordingly to the barcode. I cannot use colours due to amount of things to sort.
3
votes
1answer
141 views

Lego 7670 has two different box designs?

Does Lego 7670 (Hailfire Droid and Spider Droid) have two different colored boxes? I am seeing two different boxes on Ebay and other sites. One is a white clone wars box, and the other is a dark red ...
8
votes
1answer
631 views

Do old LEGO bricks contain lead?

I have a set of LEGO bricks from Denmark and they were made in the late 1960's; should I be concerned about my son playing with them because of any danger of lead in the product?
4
votes
1answer
149 views

What does BURP or BURPS stand for?

Came across this one a few times (most recently here) where it links to a number of mountain elements: you still end up with some neat mini-BURPS and other useful pieces
1
vote
1answer
216 views

Does NXC work with EV3? [duplicate]

Is it possible to create and run NXC programs on the EV3 brick? I installed BrixcCC, created a simple Hello World NXC program and selected "Download and Run" in the Compile menu. The EV3 brick made ...
5
votes
3answers
578 views

What's the best way to glue/adhese the street baseplates to a plywood table?

I'm building a Lego city, and I want to permanently glue the road onto the table. But I don't want it to be "lumpy", or melt, and I want to make sure that the baseplates will not come off the table, ...
3
votes
1answer
157 views

Unknown brick/piece information (curved, decorated slope)

Recently, i got a huge box of lego sets all mixed together. I have been slowly identifying the sets that are there. Some are complete, while others not but i have been managing so far. Still, there ...
1
vote
1answer
161 views

What do factory markings on the inside of DUPLO pieces mean? [duplicate]

In addition to LEGO and DUPLO names embossed inside the pieces of early DUPLO figures, there are a variety of number formats (one to three digits, some hyphenated) and in the case of 1977, the year. ...
4
votes
1answer
67 views

Is there a program to tell me if a specific parts list is available in a given colour?

I want to build some models using the new 1x2 curved slopes which come in limited colours at the moment, the models need to have single solid colours if at all possible. Is there a program or site ...
24
votes
6answers
607 views

Where can I find instruction booklets?

Is there any place where scans or PDFs of instruction booklets can be downloaded?
1
vote
1answer
234 views

EV3 Event Delegation

My problem is that the robot, which should just remain in the program until the Escape Button is pressed, just stays in the while-loop. The current code looks like this: using System; using ...
2
votes
1answer
106 views

Any substitute / schematic for Mindstorms 2.0 IR tower?

I came across a used Robotics Invention System 2.0 set, but in addition to a few missing bricks, it is missing the IR tower. Is there any generic replacement that I can use to program the RCX or does ...
3
votes
1answer
65 views

CAD model of the LEGO monorails

I was wondering two things, Is it legal to share CAD models of LEGOs with other people as long as it is not for profit and Does anyone have A CAD model of the LEGO monorail track that was made in the ...
8
votes
2answers
633 views

Lego-compatible suction cups?

I'm looking for suction cups that are compatible with the Lego pneumatic system. I've seen people who have built things with them (on youtube videos, etc), but haven't found anything on eBay or ...
16
votes
8answers
2k views

How can a sticker be removed?

In my younger days I may have placed a few stickers on my bricks. Including some that covered multiple bricks. Now my daughter has the tendency to do the same thing :) How can I best remove the ...
6
votes
3answers
189 views

Ideas to slow down RC PF train motor (Item: 88002)

I'm wondering if you already tried to slow down such a motor. I would like the train to run slower at all the supported 7 speeds. Anyway, at speed 7, the train just flies off the tracks.
5
votes
1answer
139 views

lego pieces stuck together! a stick 6m w/flange and a nose cone small 1x1 triangle

My lego pieces, a stick 6m w/flange and a nose cone small 1x1 triangle, are stuck together. I've been trying to seperate them but they just won't. Any advice?
0
votes
3answers
225 views

MOC planning and design

What tools do you use when planning and designing a new MOC? Pen and paper? Or there is something more advanced? I had the insane idea to try LDD to design my MOC and it was a nightmare. Since my MOC ...
2
votes
1answer
416 views

Easy way to get the weight of a Bricklink order

Is there an easy way to estimate, to the nearest 100 g (or so) the weight of a shopping cart in Bricklink so that I can estimate the shipping charge (sellers may quote ranges such as "250 - 500 g: $X, ...
8
votes
1answer
738 views

How can I minimize the number of merchants for given set of requested bricks?

This question should be answered in Bricklink FAQ, but I didn't find answer there. I'm a casual Lego hobbyist, I have a few sets with random pieces missing, about two dozens of them. Some are truly ...
2
votes
1answer
330 views

Use iPhone camera as an input sensor for EV3

As EV3 has Bluetooth builtin as well as iPhone too, is there a way to connect them somehow so that iPhone could send data from the camera via Bluetooth to an EV3 brick? As a more general question, ...
6
votes
1answer
468 views

Why does my NXT colour sensor not recognise colour on my iPhone?

If I point the colour sensor to my iPhone it does not recognise it, but if I point it to a piece of paper, it does. Does anyone know if there is a solution for this? I found some documentation ...
13
votes
4answers
18k views

How can I wirelessly connect the NXT and an iOS device?

I've seen videos around YouTube (like this one for a car) that show an ability to control a Mindstorms set via iOS (either iPhone or iPod Touch). I am just getting started with Mindstorms, but find ...
10
votes
3answers
1k views

How can odors be removed from bricks?

I recently purchased some used bricks. They currently smell like cigarette smoke. What is the best way to clean these parts to remove the odor?
7
votes
4answers
571 views

Is there an organization who repackages old LEGO bricks into sets to give to underprivileged children?

Does Lego have a program by which we can return old LEGO parts so they can be reassembled into packages for underprivileged kids? My kids, and now grandkids, have always played with LEGO bricks and I ...
15
votes
4answers
5k views

Are LEGO bricks recyclable?

Yes, I know that it is kind of a dumb question, as no one would want to dispose of LEGO bricks. But it's a curiosity thing: are Lego bricks recyclable?
5
votes
1answer
63 views

Is it safe to remove PC (polycarbonate) arms from minfigures?

I would like to replace the clear PC arms on the Chima ice figures with opaque ABS. Would I still be able to use the clear PC arms with other figures after I have removed them? I know that removing ...
9
votes
1answer
124 views

How to restore old, scratched plates

I have some old lego plates that are quite scratched. They look rather dull compared to the newer pieces in my collection. Is there any way to restore (even partially) the shiny look between the ...
10
votes
2answers
939 views

How to remove scratches from LEGO windshield parts?

I was storing my windshields from cars with other my bricks. Now they are scratched, nearly not transparent just translucent. Is there a way to sanitize transparent parts from scratches?
1
vote
2answers
115 views

Legal free NXT-G download [duplicate]

Where can I get a legal, free copy of NXT-G for mac? I lost my disk when I bought my NXT, and I need to get a new program.
1
vote
2answers
186 views

Robot that searches for lights

I use Lego Mindstorms NXT 2.0. I want to schedule my robot to move to where there is light αnd then when it finds it (a large amount of light, for example 80%) to stop and move another motor for 30 ...
1
vote
1answer
336 views

EV3 parallel MyBlocks, but only one working

TL;DR = Is there any obvious reason why a MyBlock, added twice in parallel to a program, will only run one of them? In my EV3-G program, I have a MyBlock which uses the Proximity Heading to control ...
1
vote
1answer
176 views

Good EV3 iBook for programming or building

I am a participant in a Lego mind storms competition soon using EV3. I would like to know if there are good, free iBooks for me to download (PDF or iBook from the apple iBook store). Preferably the ...
2
votes
3answers
1k views

What is a normal range of reading of the Light Sensor using EV3 Raw Sensor block?

EV3 software does not support the Light Sensor. It does support the Color Sensor. The solution is to use the Raw Sensor Block. What is "normal" for raw sensor block readings? I'm getting readings ...
5
votes
1answer
75 views

What's the best way to machine LEGO pieces on a mill?

Does anyone have experience with modifying LEGO pieces on a mill? Any suggestions on cutting speed?
5
votes
2answers
301 views

Does anyone make a self-driving car?

Mapping and localization are the hottest trends in robotics today. And what's more exciting is they can be both implemented with a low-cost robotics kit like LEGO Mindstorms! I tried to make a ...
6
votes
2answers
2k views

How can I get my NXT to turn on - all it does is softly click?

Recently when I plugged my NXT brick into my PC I clicked on the wrong option and now all it does is clicks when I turn it on? How do I get it back to a usable state?
11
votes
1answer
574 views

What are the characteristics of “Miniland” scale?

I have heard many references to "Miniland" scale. From what I have seen, this style of building mostly includes figurines that are larger than normal mini-figs. What are some other characteristics of ...
20
votes
5answers
1k views

How can I build an (automatic) Mindstorms charging-station?

I'm thinking about buying LEGO Mindstorms and start programming robots. I'm a software engineer and LEGO fan since I was a child so this sounds like the perfect combination of my dearest hobbies. But ...
13
votes
8answers
1k views

Cleaning between the studs of a build

I've unpacked a few of my models after moving home some time ago, these models have been in a cardboard boxes for several months and need cleaning: I've tried compressed air, which only makes some ...
11
votes
2answers
876 views

Where can I get 'classic' Lego heads from?

The new heads with expressions are all well and good, but I for one prefer the expressionless 'classic' faces. Are they available anywhere?
5
votes
1answer
104 views

Pass sensor or motor port number as a parameter

I want to create a block for one light sensor or one motor separately. Is it possible to give the number of the port as a parameter to a sensor or motor block via data wire? In NXT-G it was possible.
10
votes
2answers
221 views

Difference between LEGO Castle and LEGO Kingdoms

Can anyone explain what the difference is between LEGO Castle and LEGO Kingdoms. I don't understand why they are not in the same product group. Also LEGO Kingdoms is no longer listed on the lego.com ...
5
votes
2answers
178 views

Older sets in The Lego Movie?

Are there any existing/hisorical complete sets (for example: buildings, vehicles, etc) featured in The Lego Movie? Sets created specifically for the movie do not count. For example, the bad cop's ...
13
votes
1answer
1k views

A piece with no place in Heartlake Stables

I recently bought this set for my niece for her birthday, when we were finished setting it up we noticed a larger orange piece that we couldn't find a place for but was in the set and in the back of ...
4
votes
3answers
115 views

Design of record-breaking builds

This is more a theoretical than practical question... If one wanted to build a 40-metre tower out of only Lego using the fewest pieces or cost, what design would be a good one, e.g. types of pieces ...
4
votes
4answers
816 views

What other uses are there for pull-back motors?

Sets 42010 and 42011 feature a pull-back motor. They have a very high torque for a very small numbers of turns, they then free-wheel. I'm trying to find alternate usage for them. That is anything but ...
14
votes
3answers
57k views

Where can I download the LEGO Mindstorms NXT 2.0 IDE?

I want to see how well that IDE runs on my old Windows XP laptop. I looked on www.lego.com, but it seems to all be documentation (downloads).

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