14
votes
3answers
2k views

Is there a Technique or Algorithm for Building Spheres?

There are times when I would like to build a sphere or a dome like this one: From Small Lego Sphere Project While this example is great, I find it difficult to scale it to another size, whether ...
3
votes
1answer
727 views

Can I open my old NXT program files in the new EV3 software so I don't have to rewrite the entire program?

I would like to use or convert NXT-G 2.0 programs for use with the new EV3 software. Is there an easy way to convert them besides just building them from scratch in the EV3 environment?
1
vote
2answers
242 views

Are BanBao bricks compatible with Lego?

Does anyone has experience with BanBao bricks? BanBao World Are they compatible with Lego bricks? They have basic sets and plates which are at a good price.
2
votes
2answers
133 views

What's the circle piece in this MOC?

I saw a moc from here. But have no idea what the piece it use on the arms of the robot, and on the guns.
1
vote
1answer
164 views

Identifying Lego set from 1980's

Can someone please help me identify this Lego set from the 1980's? I remember building a house, work shed/garage and some type of vehicle. The base plate is light gray. It came with 2 minifigures, ...
6
votes
2answers
281 views

Old Lego movies

As I remember, it was about 1990 maybe some years earlier, there were movies, made by Lego, they were about 3 minutes long, maybe longer. It was of course not computer-generated videos but normal, ...
4
votes
1answer
46 views

Can I share/download a wishlist on Bricklink?

I have a whole set in a wishlist in Bricklink and I would like to share it with some friends. Can I either: Share the list via Bricklink so they can use it directly. Download it in XML so they can ...
4
votes
2answers
287 views

How can I attach a Technic Linear Actuator to a EV3 Medium Motor?

I'm pretty new to serious LEGO building (never got past very blocky houses as a kid but got into Technic a couple of months ago) and need to connect a Technic large linear actuator (61927) to a ...
14
votes
4answers
14k views

What was the first set produced by The LEGO Group?

What was the first Lego set produced, and when was it first released?
1
vote
1answer
78 views

EV3 motor TACHO signal connection. Hardware schematic questions

I'm trying to understand EV3 motor TACHO signals circuit on the EV3 hardware schematic. Please look at the image below. Two things I cant understand. On the left side the TACHOA0 input is ...
0
votes
1answer
41 views

How to switch an NXT sensor port by a motor port? [duplicate]

Me and my partner are finishing up our robot for the RobotCup and we desperately need one more motor port. We will only use 3 sensor ports, so my question was if there was even the slight chance that ...
3
votes
1answer
50 views

Remove decals from LEGO Friends mini-dolls

I am trying to remove the decals from my LEGO Friends mini-dolls. Does anyone have any suggestions for doing this? I tried rubbing alchaol on a minifigure once, and it made it all gross looking, so I ...
3
votes
0answers
241 views

Is there a free EV3 simulator (virtual machine) for the Mac OS?

I recently saw this question on a virtual EV3 machine. From the video, I felt that this software will be great. However, I don't have the budget needed to buy a licence. Is there any alternative to ...
1
vote
1answer
158 views

Issues with set 10234 book 3 pg 43

The white wing-like piece continues to pop off when placed. Has anyone figured out a fix for this or am I doing something wrong Instructions 3 & 4: src: ...
1
vote
0answers
123 views

Can I use EV3 with a TETRIX motor?

What program can I use to control a TETRIX motor through the LEGO EV3? I've heard that RobotC currently cannot be used for this. Has NI released a Labview version which I can use to control TETRIX ...
3
votes
0answers
58 views

What electrical contact material is used for PF Connectors?

I'm designing my own PF electrical connector and I want to have the same functional characteristics as the original Lego brick. Could you please let me know which electrical contact material is ...
3
votes
1answer
660 views

Why are Lego products so expensive in Europe?

Comparing a few Lego products at the official online store, I found U.S. prices seem to be consistently around 70% of those in Europe given current currency exchange rates. That's a surprising ...
1
vote
2answers
32 views

Bluetooth Conection PC-NXT1-NXT2

I want to connect, via Bluetooth, one PC with a NXT brick and then have that NXT communicate with another NXT. So I send a message from the PC to NXT1 and have NXT1 send a message to NXT2. Is this ...
2
votes
1answer
172 views

The most amount of pieces [ever] per set

Which set number had the most Standard LEGO elements to date? Technic LEGO elements to date?
2
votes
1answer
84 views

Lego RCX 1.0 problem with communication

I have a problem with communication between the tower (it's installed and it's working - green light when communicating by IR ) and a RCX 1.0. It's not downloading .lgo file. I've tried with few ...
1
vote
1answer
2k views

Getting the IR Tower working with RCX and RobotC [duplicate]

Possible Duplicate: Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / Windows XP driver Trying to get RobotC to work with my old RCX 2.0. I'm running windows 7 64 bit. I've connected the IR ...
5
votes
1answer
586 views

RobotC for RCX cannot find USB IR Tower

I have looked for similar question but found null. So here I am asking. I have Win7, a RobotC fo RCX and Mindstorms for RCX (both are old version, but available free). I borrowed an old LEGO kit ...
4
votes
1answer
200 views

Is it possible to use Bluetooth to connect two EV3 bricks using RobotC?

For example to send a numeric value from one to the other?
0
votes
0answers
114 views

Daisy chaining EV3 with RobotC

I'm trying to run EV3 programs with RobotC and trying run on EV3 Daisy Chaining. I have three independent EV3 bricks labelled A,B,C. I want, according to the color reading by the color sensor on ...
2
votes
1answer
77 views

How can I use bluetooth on my phone to run a program on the EV3 brick?

I tried the Commander app but it seems to just let you control individual motors. I would like to run the various programs I have made using an input on the phone through Bluetooth Is this possible ...
12
votes
6answers
6k views

What are the largest Technic-compatible tires on the market?

I am looking for the largest LEGO wheels with tires available to build a nice-sized RC LEGO car. Of course I will start with the simplest prototype, but I would like to achieve a design which will ...
2
votes
2answers
87 views

What logos appear on Duplo brick studs?

Do all regular Duplo bricks have the word "Duplo" written on their studs? If not, what variations are there?
1
vote
2answers
328 views

How to install NXT Firmware 1.28?

Lego is giving 1.31 from their website but I need 1.28, how can I install it?
3
votes
3answers
310 views

Why doesn't lego make many 2x2x4 Pieces?

I'm just wondering if anybody here knows where I can get some 2x2x4 pieces ... It seems that Lego doesn't make many just standard bricks that are 4 high ... I've found a few singles here and there on ...
9
votes
6answers
428 views

Which brands (fictional and non-fictional) have appeared in the Town/City theme?

A few years ago I wrote an article about the fictional organisation logos found in the City theme. I'd quite like to revisit this, as I'm sure I must have missed some. I also only focused on the ...
0
votes
1answer
44 views

What does 191767 mean in “Paper, Cardboard for Set 4336 #1, Scala Cat (191767)”

In BL http://www.bricklink.com/catalogItem.asp?P=4336cdb01 This cardboard's name is "Paper, Cardboard for Set 4336 #1, Scala Cat (191767)" What does "(191767)" mean here in the description?
1
vote
1answer
483 views

Is it possible to connect EV3 and NXT bricks like master/slave configuration via bluetooth?

Can I make a Bluetooth connection between LEGO EV3 bricks and LEGO NXT bricks? and If it is possible how to handle the software to make a chain between them?
2
votes
1answer
171 views

Light on color sensor is blue

We had the sensor color on red and it was working with our remote. We changed the batteries in the 'brain' and now the light sensor is blue and won't work with the remote. Any suggestions? It's a ...
4
votes
2answers
1k views

Can I change the Bluetooth identifier for an EV3 brick?

I'm coaching a number of FIRST Lego League teams and wish to set up our lab so that each computer could potentially be paired with each brick, but I want to uniquely identify the bricks (EV3-Team1, ...
3
votes
1answer
99 views

What does “No Friction” mean in Parts “Gear with 8 Teeth Wide, Notched and No Friction”

http://www.brickowl.com/catalog/lego-gear-with-8-teeth-wide-notched-and-no-friction-11955 As title, what does "No Friction" mean in the part "Gear with 8 Teeth Wide, Notched and No Friction" ?
6
votes
1answer
183 views

Quick way to inventory parts

I have a rather large collection of LEGO elements that are not sorted in any way, and I'd like to keep track of them. There are a few other posts about ways to keep track of elements, and I've looked ...
5
votes
1answer
441 views

Has Lego discontinued presenting alternate configurations on the backs of modern boxes?

When I was younger, the backs of my Castle/Space Lego set boxes showed alternate model builds for the supplied pieces, configurations not detailed in the instruction manual. I appreciated these ...
3
votes
2answers
1k views

How much is my large minifigure retail display worth?

I have an extra large LEGO figure (approximately 19 inches/48 cm tall) that I wish to sell. This is an item which has only been available to retailers as part of merchandising the stores. Any ideas ...
1
vote
1answer
198 views

EV3 T Rex problems

I am new to this and I need some help with the moveabsolute block which is described in Chapter 16 of Daniele Benedetelli's book. In figure 16 - 2 he describes the block and here is my problem: I ...
96
votes
3answers
76k views

How much usage can a LEGO piece take before it loses its 'clutch power'?

In this article it's mentioned that one very important feature of the LEGO bricks are their 'clutch power' which is "the ability of its bricks to snap together tightly while also being easy to ...
1
vote
3answers
491 views

LEGO STUDIOS Moviemaker Set

I was offered a set from LEGO STUDIOS line, very well maintained but without his software. Can someone share the installation CD in English of LEGO STUDIOS 1349 Steven Spielberg Moviemaker Set or ...
5
votes
1answer
138 views

Where are the electric pieces for 42029?

I was building LEGO 42029 Customized Pickup Truck, when I got to a page where I needed electrical parts, such as the battery box and the wires. I checked and these pieces were NOT included. Should ...
5
votes
5answers
826 views

Set missing all the Minifigures and a few other parts

When I got the Quinjet set, I dug through every bag but the manufacturers forgot a few pieces and my set didn't have any minifigures. How can I get the missing minifigures and the parts I'm missing?
-3
votes
1answer
154 views

Way to build LEGO spaceship with regular bricks [closed]

How do I build a spaceship without buying a spaceship set? With a limited amount of bricks, like, say 300 2x4, 100 2x2, and about 20 2x1 bricks. I'm looking for instructions.
3
votes
2answers
156 views

Is this a real Duplo Train Base or fake?

I'm new to LEGO, so forgive me if this is a simple question. I purchased a lot of 30 Duplo Train Base from eBay. Below is the picture that accompanied the listing. There is a disclaimer stating: ...
2
votes
4answers
640 views

How to put LEGO together upside down

I'm building a truck. For the transmission, I want to make it all even and symmetrical. To do that I need the pieces to stay together but they have no studs connecting so they will just fall apart. ...
2
votes
1answer
72 views

Can a EV3 program run simultaneously with the Running Robot commander app?

Is it possible to run the Robot Commander app and a program on the EV3 brick at the same time? If so how would it be accomplished?
21
votes
5answers
29k views

What are the dimensions of a LEGO brick?

What are the real world dimensions of bricks? (starting with 1x1 brick) Plates? Studs? Does LEGO think of this in metric or imperial units or something else?
2
votes
2answers
739 views

EV3 Brick Error Symbols?

I am currently developing an EV3 robot that sorts colored technic beams. However, the brick will only run part of the program and then generate a strange error code on the brick's screen. The error ...
3
votes
2answers
401 views

How many ways can six 8-peg lego blocks of six different colors be combined?

I have seen the number quoted as > 650 billion. The quote is from a Danish mathematician, Soren Ehlers. Intuitively, this does not seem correct to me. Any mathematicians/statisticians out there who ...

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