2
votes
1answer
101 views

EV3 RMIregulatedMotor Regulation Problems

I have problem with regulation of the motor when I control EV3 with Bluetooth. Here is the code: RemoteEV3 ev3 = new RemoteEV3("10.0.1.1"); ev3.setDefault(); RMIRegulatedMotor leftMotor = ...
0
votes
1answer
22 views

Connect 39k3 powerpack to 417j3 motor

I'm new to lego. Trying to connect the powerpack 39k3 from 42009 Crane to a 417j3 motor. Is a 8528 Converter Cables for Mindstorms NXT the right cable? Is there a way to hack a phone connector ...
1
vote
0answers
62 views

Programming the LEGO Mindstorms T-Rex [duplicate]

I followed the instructions up to the MoveAbsolute My Block for the T-rex but I'm not able to link the last connection (Brake at End). Can anyone advise what I might need to change?
2
votes
1answer
357 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 ...
4
votes
3answers
164 views

Difference between “Pick a brick” and “Bricks and pieces”

I am confused by the existence of two distinct and official Lego online services for ordering individual Lego parts, Pick a brick and Bricks and pieces. Why are there two of them? What are the ...
1
vote
1answer
242 views

What set is the minifig from?

I found this minifig in a box, but do not know what set it came from ... help?
6
votes
2answers
345 views

How is this brick attached to the pregnant minifig?

While Google-image-searching pregnant minifigs (don't ask) I came across this fig, and other variations on it, but I can't figure out how the 2x2 round brick is attached.
17
votes
5answers
2k views

Useful machines built with LEGO

I am looking for examples of useful machines built with LEGO (probably Technics, NXT etc.). There are many fun project examples and proofs of concept, such as a Rubik cube solver and a Turing machine. ...
3
votes
3answers
475 views

Representing pregnancy on LEGO minifigs without a dome

So far for pregnancy I have tried a fetal carrier that I put on the minifig's back but this limits her movements. Specifically she can't bend too far in either direction and also she can't lay down ...
0
votes
1answer
96 views

9398 problem with the front wheels

I've just finished 9398 4x4 Crawler. The rear motor works properly, but the front motor doesn't: The wheels seem to be locked, although they spin freely when I turn them by hand. What could be the ...
0
votes
1answer
103 views

EV3 T Rex problems

I am new to this and I need some help with the moveabsolute block which is descirbed in chapter 16 of Daniele Benedetelli's book. In figure 16 - 2 he describes the block and here is my problem: I ...
2
votes
1answer
104 views

Mindstorms EV3 PC application won't load

Installed Mindstorms EV3 application on MS Windows 7 Home Premium v6.1 (Build 7601: Service Pack 1) and I keep getting the same error message when launching. A white window pops up with the ...
1
vote
0answers
49 views

How to Return a Motor to a specific value [duplicate]

I've created an arm robot using Mindstrom NXT that can find an object pick it up and move it to an new and random location. My problem is that I would like for the motor to, at the end of the program, ...
1
vote
1answer
104 views

Dimensions for ev3 pieces

I need to know the dimensions of the ev3 pieces for a school project (in mm). Does anyone know?
0
votes
1answer
34 views

How to turn the NXT at an angle with NXC

How can I program, with NXC, a Lego NXT to turn a specific angle? I've tried using wait() but the problem isn't solved. Can I use RotateMotor()? What parameters should I use? For example if I want ...
1
vote
0answers
68 views

8258 Headlight assemblies

Anyone else having a problem with with headlight assemblies on 8258 crane truck? I can't seem to fit them in due to interference from fog light bar. Thanks
1
vote
1answer
104 views

Help Identifying a LEGO Set from bag 7

I have a sealed bag of LEGO bricks that I am trying to identify. The bag is labelled with a large number 7. The pieces are dark blue, light gray, dark gray. It looks like there is a smaller bag of ...
11
votes
8answers
3k views

My poor minifig's head is stuck in his helmet!

Recently I made a LEGO race car with a driver who wore a helmet. Unfortunately, after the race, I tried to take off his helmet and his head came off inside the helmet. Any suggestions about getting it ...
2
votes
1answer
220 views

How to close color Sensor properly?

I want to get data from the color sensor with Bluetooth. I can get data but when the program terminates, the color sensor dose not close even though I call function close() on the color sensor. The ...
0
votes
1answer
72 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 ...
7
votes
2answers
297 views

Does the jumper plate have a Danish nickname?

Does the "jumper plate" (1×2 plate with centered stud) have a Danish nickname like the "Erling"? Who is the designer of this part? And does there exist a catalog of designers of specific bricks?
1
vote
0answers
20 views

Need a block that can combine a movement program with NXTbee radio (using Labview)

I am a student. I am working on a science project using Lego Mindstorm robots enhanced with NXTbees creating a mesh network. My engineering mentor has me using Labview. I am trying to find a block ...
3
votes
2answers
261 views

What are the armless minifigures from the LEGO boardgames called?

I see many of the LEGO boardgames come with mini figures which are armless and have no holes for arms. While I think it is kind of ridiculous to not simply provide a full figure, I understand it's ...
2
votes
1answer
45 views

6216m2 motor found… what to do?

I recently found a 6216m2 motor in a jumble of old bricks and such - but no connection wires. Firstly, how does this motor compare against all others? As it is a 4.5V motor, it is not listed in ...
3
votes
2answers
315 views

Return a robot to its 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 ...
5
votes
1answer
2k views

Mindstorms 2.0 can't download to NXT brick with error 142023

Using Mindstorms education 2.0 on a Windows 7 computer I can't seem to get the program to see the NXT via USB or bluetooth dongle. When connected by USB nothing appears in the NXT window with device ...
16
votes
3answers
15k views

How do I print images onto minifig body parts?

I have seen a few custom minifigures out there with images on certain body parts never produced by LEGO. What is the best way to achieve this? I have heard of some people printing out the image on ...
2
votes
1answer
113 views

What's an effective strategy for purchasing large numbers of different bricks?

If you want to go on bricklink for example, you search by part but the end up with parts on various different stores. Buying on ebay is extremely expensive for groups of different parts. How do you ...
0
votes
0answers
57 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 labeled A,B,C. I want, according the color reading by color sensor connect on port ...
0
votes
0answers
57 views

Determining what set I have from a bag of lego pieces [duplicate]

I have this set of Legos that came in the bag but in the wrong box at goodwill it's pieces are blue mostly please help
-1
votes
1answer
30 views

Not detecting motor port D

We are trying to program in LabVIEW, using all 4 motor ports. On the port selector, port D is not even showing up.
3
votes
3answers
2k views

Determining what set I have from a bag of lego pieces?

I have a bag of lego pieces that make a set of something but I don't have a box or instructions. Is there anyway to determine what set it is so I can download/buy an instruction sheet for it...or at ...
0
votes
1answer
85 views

Programming EV3 with NXC

I'm trying to run NXC programs (all run well on NXT) but when trying run it on EV3 I find an error. The download from computer to EV3, runs well but trying to run the program with RUN EV3, I have an ...
19
votes
4answers
26k 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?
1
vote
0answers
73 views

Free EV3 simulator(virtual machine) for mac

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 ...
0
votes
0answers
12 views

MRDS & RCX Support?

What is the last version of the Microsoft Robotics Developer Studio that supports the RCX? The Wikipedia link (http://en.wikipedia.org/wiki/Microsoft_Robotics_Developer_Studio) indicates RCX was ...
11
votes
8answers
1k views

Are there any mirrored LEGO bricks?

I recently built LEGO Creator 5770: Lighthouse Island which features a clever trick to build the lighthouse's lantern, using stickers on on a Slope Brick 2x2 and Slope Top 1x2x2/3: Step 54 from ...
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 ...
14
votes
7answers
4k views

What is the rarest LEGO production element (colour/shape combination)?

What is the rarest LEGO element according to the following criteria: Genuine LEGO elements, not those available through third party vendors or otherwise modified elements. (So nothing from ...
0
votes
0answers
24 views

Where can I find this lego piece? [duplicate]

I found this lego piece but I want some more of them for my huge lego project. But where can I find these? I really need exactly this lego piece can someone help me? The lego piece I have: If you ...
2
votes
2answers
162 views

What kind of “Lego” figures are these?

Can anyone tell me about these lego-compatible figures? They clearly aren't lego brand, they don't look like mega blok figures or tyco figures that I have seen (not that they couldn't be one of those ...
1
vote
1answer
86 views

How can a brick/color combination exist but not be part of a set?

In a recent question the 2x4 transparent brick in neon green came up as a rare part (see Does someone know where i can find this lego brick?). It doesn't seem to be listed as part of a set (at least ...
3
votes
3answers
161 views

Does someone know where i can find this lego brick?

Where can i find this lego brick? I got one but I want some more of them for a project.
2
votes
1answer
54 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 ...
4
votes
2answers
705 views

Quality issues with tan-colored Lego pieces?

I recently bought an expensive Lego set with a large number of tan-colored pieces. I was very disappointed to find out that more than a dozen (isn't that a spectacularly large number?) of 1x1 bricks ...
0
votes
1answer
96 views

Some LEGO elements not attaching as usual

I am building a tank made of purely normal LEGO elements, which means no gears or axles or that type of stuff. I am trying to attach a 6x6 LEGO plate onto the base for support, but it is not ...
2
votes
1answer
66 views

Variable stick lengths and angles at nodes of building bricks

Is it possible to build 3D toys connecting several LEGO Bricks sticks/rods to make polyhedrons? Lengths and angles between sticks should be variable.
0
votes
0answers
29 views

Use of Mindsensors IMU with Labview

I thought someone could help me with a the Mindsensors AbsoluteIMU ACG and its use with the Lego Mindstorms NXT. Is it possible to use it with and get data out of it?
3
votes
1answer
149 views

Is it possible to run more than two remote control trains on one track?

My son has two passenger trains and a lego cargo train. We can get two trains running on the track using one remote. But how do you operate a third train? We do have other remotes which came with ...
2
votes
2answers
503 views

Buying minifigure parts at the Lego Store

Is it possible to buy individual Minifigure parts (like minifig heads only) at the LEGO store? (the physical ones, not the online) if so, how much would they go for?

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