4
votes
1answer
161 views

Why are official LEGO PDF instruction books such poor quality?

More often than not, my boys are working from PDF instructions downloaded at the LEGO site. The quality of those PDFs is poor. I'm sure you've experienced the jagged, pixelated lines and the bricks so ...
1
vote
1answer
58 views

Scan objects while moving?

I'm using leJOS with an NXT robot. I want to scan the distances of objects from my robot. While rotating the Ultrasonic sensor from right to left, I would like to find out which object is closest to ...
2
votes
1answer
105 views

Mindstorms, black orphaned data wires

I've just copied a loop element, which had a data wire going into it. The internal wires (from the old external data wire) are now black, and I cannot delete them, or re-link them to a new external ...
3
votes
3answers
112 views

What's a good age to start getting into Mindstorms with my child?

What is a good age to start getting a child into LEGO Mindstorms? Also, how would you recommend introducing her? I can't wait to start building robots with my daughter. She loves LEGO and the idea of ...
1
vote
2answers
170 views

How do can I tell if minifigures are custom-made or LEGO Originals?

I see that on Amazon you can find a lot of minifigures but I can't tell if they are cheap knock-offs or not.
1
vote
1answer
72 views

Pneumatic set pistons getting sticky

My sons "9641 Pneumatics Add on Set" now suffers from stiction. How can this be fixed? Can it be cleaned? Is there a recommended lubricant?
0
votes
2answers
120 views

Will they ever make LEGO The Amazing Spider-man 2 sets?

I realized that they released an exclusive minifigure of The Amazing Spider-Man 2 in the San Diego Comic Con but I am still wondering if they will ever make LEGO set(s) based on the movie.
1
vote
3answers
108 views

My Blocks with return parameter

I have the retail EV3 kit and have created a function with in and out numeric parameters. While using the [in] params seem quite straight forward, it seems that I can only set the [out] param once. ...
4
votes
3answers
181 views

Which Lego Police set or sets do I have?

We were given a big bag of Lego pieces. When sorting through them my son found a bunch of police pieces but we can't figure out which set or sets they belong to. I've tried looking up a few ...
2
votes
2answers
234 views

What is the best way to make a staircase?

I have built a Bat Cave from some bookcases and lego base plates. ( http://alice-yarns.co.uk/blog/2013/11/17/the-batcave-part-i/ ) I want to add staircases for the characters to move between each of ...
4
votes
3answers
129 views

Holonomic robots using Mindstorms

I just got some Rotacaster wheels and want to try building a 3 wheeled Mindstorms omnibot (holonomic robot) and I'm looking for a practical (easy) discussion about writing a driving program. I've ...
1
vote
0answers
43 views

How is a LEGO Friends Mini-doll built? [duplicate]

Has anyone taken apart a LEGO Friends mini-doll to see how the arms and legs connect? And are the connection points compatible with any other types of brick?
0
votes
2answers
148 views

How can you remove a minifig from its key chain?

My sister has a LEGO minifigure attached to a key chain, but she wants to remove it from the key chain, how can she do this?
5
votes
1answer
189 views

How can the “Bar Holder with Clip” part be used?

I'm wondering whether the "bar holder" end of this element (http://www.bricklink.com/catalogItem.asp?P=11090) can be used as a stud. In other words, would it have enough clutch power to hold e.g. a ...
2
votes
1answer
95 views

What are the bricks in this picture/video?

Can someone please identify the pieces in this picture? I'd like to acquire these, but I'm not a LEGO enthusiast, so I don't really have an idea where to start. For reference, the picture was ...
7
votes
1answer
418 views

Can I re-use my LEGO Store Pick a Brick cup?

I was wondering if anyone went into a LEGO store with their old Pick a Brick cup and got a discount for re-using it, or do you have to buy a new cup?
3
votes
2answers
121 views

Simple optical switch?

I have built a conveyor belt for my son out of Lego Technic. Now, I would like to add a simple optical switch (so that the belt stops when an object arrives at the end of the belt..), and I am not ...
3
votes
1answer
165 views

what is included lego 7155

I found an open box lego 7155 at a local Goodwill. The funny thing is that there are 3 unopened bags in the box, 3 booklets (instructions, and 2 other small booklets along with 4 large pieces that ...
0
votes
1answer
106 views

How quickly do new molds reach PAB on the Lego website?

A few months ago, I asked Lego customer service if the 1x2 jumper plates on the Lego PAB site would be the new mould (with stud holders) or the old mould (with pegs). I received no reply, not even to ...
4
votes
1answer
82 views

Name of trunk-like objects

What's the name of the black curved elements in the header/banner of https://www.flickr.com/groups/lego_arboretum/? The full picture along with some others of the same diorama can be seen here: ...
1
vote
2answers
101 views

Find back start position?

I have a LEGO NXT robot, and after some movements I would like it to return back where it started. After some research, it looks like my best option is to revert the motors. To decode their movements ...
1
vote
1answer
36 views

Is it possible to add block to the on-brick “NXT Program” menu?

I have an NXT 2.0 (8547) set. Is it possible to add some custom blocks to the NXT progranm submenu on the brick itself (like the existing "forward 5", "turn left", ...) so that I can add and use some ...
2
votes
1answer
125 views

Virtual LEGO / Technics / Mindstorms simulation environments

I know that there are quite a few LEGO CADs floating around, but are there any physically correct simulation environments for models built with LEGO / Technic / Mindstorms parts, that would, for ...
1
vote
0answers
82 views

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

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. ...
2
votes
1answer
198 views

Robot that builds a copy of itself

I'd like to try building a robot that can build a copy of itself. Basically, I guess that involves: having some means of navigating around (i.e. wheels, tracks, something to move on) having some ...
3
votes
1answer
125 views

Best online community for Lego Builders?

It seems like different people use different online communities to share Lego-related things, but is there one that's just the best? I suppose I am asking a subjective question, but what I'm looking ...
3
votes
2answers
133 views

Going to Legoland Denmark with my family, what should I do/get?

Hello fellow LEGO lovers! I know this question is not entirely what this site is for but I figured I'd ask because I want to hear what you have to say. I have been wanting to go to the original ...
3
votes
1answer
75 views

Installing Linux on my NXT

I have an old NXT laying around and I want to set it up with my printer so I can connect it to the cloud. In order to do this I need to install Linux on the NXT and connect the NXT's USB port to the ...
3
votes
1answer
100 views

Finding certain positions in a room?

I have LEGO NXT and a square room of 100x100cm. I would like to use the center of the of the room always as my starting point(the black box). The green box is going to be my park area. Circles can be ...
3
votes
2answers
249 views

Any good alternatives to BrickLink?

I'm trying to find certain bricks online, and of course, came across BrickLink. But it's so darn hard to use it; search is absolutely useless, and I can't figure out how to use the catalog for the ...
5
votes
1answer
201 views

Does LEGO generally restrict the sale of Lego sets in a country?

I live in Israel where Lego are available but for insane prices. Generally 5X the price of a Lego set online. I have called Lego asking to have a Lego set shipped to me, and they have told me that ...
0
votes
1answer
57 views

How can I make product suggestions to TLG?

I'm sure lots of is have had ideas for products, parts, sets, themes or services that we'd like LEGO to produce. What are the best ways of proposing them to TLG, and of persuading them to take on our ...
0
votes
0answers
95 views

lego sticker PDFs

I have recently tried to put together several discontinued lego sets by assembling the bricks from my collection and buying the missing ones from the Pick a brick lego site. I download the ...
1
vote
1answer
125 views

Link 1 x 6 with Stoppers Part 2739b

Will Link 1 X 6 connect to Liftarm 2 Axle Holes and Pin / Crank (Part 33299)? The Link will be attached to a coke can, that needs to drive a crankshaft. 2739b from Peeron 33299 from Peeron
1
vote
2answers
168 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 ...
0
votes
1answer
87 views

EV3 IR Beacon/Remote Programmability

Can the EV3 IR Beacon/Remote be programmed to emit other IR signals, like for triggering a camera? I'd like to use the Mindstorms EV3 kit for building a hyperlapse photography rover where it moves, ...
0
votes
1answer
179 views

Programming with Lego Mindstorms EV3

I know this question was asked in the past, but I want an up-to-date answer. What is the best way to program with the NXT with a oriented object programming language? Ideally C#, C++ or Java (maybe ...
2
votes
1answer
207 views

I have a 16x16 stud clear base plate. Where is it from?

I found another grab bag treasure. I ended up with a 16x16 stud clear(ish) base plate. A quick look at bricklink gave me a no items found message. I'd like to know which set(s) this piece can be found ...
1
vote
1answer
69 views

How to use printed bricks from set 850425 into LDD?

I would like to know if it is possible to use the printed tiles (those with letters) from the 850425 set into the Lego Digital Designer (LDD)? And if it is possible, the next question is "how" of ...
5
votes
3answers
140 views

Was it once possible to put a 1x1 round into a minifig cup?

I remember being able to put a 1x1 round brick into the top of a minifig cup before my dark age (the period of time that a person stops building with Lego, up to the time they pick up the bricks ...
1
vote
1answer
131 views

Does NXC work with EV3?

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 ...
3
votes
1answer
254 views

How can I make a precise one-way clutch using Technic elements?

I need a mechanism so that if a (NXT) motor rotates forward, it moves one gear, but the other stays still, but if it rotates backward, the first gear does not move, but the second one does. I found ...
1
vote
1answer
163 views

Can EV3-G MyBlocks be recursive?

Imagine I create a MyBlock called "function1" from a line of blocks. Can I call that block from within itself? This is the program for the block "recursiveTest." Will this block function properly? ...
7
votes
1answer
763 views

Is there a way to convert a 3D model into a lego sculpture?

After researching this question for a few days, I want to post it here so I can share what I learned in an answer, and hopefully learn some new techniques too. If anyone has found another way to do ...
1
vote
0answers
49 views

Programming RCX in 10.9 environment

My school has 15 RCX robot kits that this year has just been sitting because all the old computers with OS X 10.4 are now gone and we are using OS X 10.9. I would like to run the original RoboLab ...
5
votes
2answers
220 views

Is it possible to create a differential if I don't have it as a ready to use element?

I have numerous gears, axis and other elements from different Lego Technic sets. I wonder if using them I can make a kind of a differential like this? If not, how can I implement similar ...
0
votes
3answers
115 views

Are there any LEGO movie/game posters?

I'm trying to find some posters for my childrens room and everytime I find something on EBay etc .. they are all A4 or A3 :( I'm guessing it's a simple process as getting a nice quality version image ...
0
votes
0answers
46 views

Parallel Direct Commands to an NXT

Is it possible to send multiple Direct Commands to an NXT brick in a quick succession, and the NXT brick will execute them as soon as it receives them which will look like they are happening in ...
1
vote
0answers
352 views

API for Android or iOS connecting to EV3 by bluetooth

There is official API for Windows, WindowsPhone8 and WinRT https://legoev3.codeplex.com/ it lets you connect to EV3 brick and control it remotely from your WindowsPhone. Are there any libraries ...
1
vote
1answer
65 views

What do the V# codes represent in the LEGO shop?

The online LEGO shop references products with a V# code at the end, like this: What is the meaning of this code?

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