4
votes
2answers
4k 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 ...
4
votes
1answer
85 views

Please help identify Star Wars set - I have some very specific wings

Please see attached pic, I reckon these are part of a Star Wars ship. Can anyone help me identify the set? Many thanks in advance, Michael.
8
votes
1answer
221 views

Can I safely dissassemble a 74569 motor (the old, fast 9v one)

I have an ancient 74569 motor: Unfortunately, it's broken: The shaft spins freely by hand, but when I connect power to it, it doesn't spin at all. I would like to see if I can just open it and ...
3
votes
1answer
228 views
6
votes
1answer
172 views

How can I stop the LEGO Cargo train 60052 wheels from skidding on track?

I have the Cargo train 60052, it's only around a year old and lately I've found on starting it (on both straight and curved track pieces) it isn't moving, the wheels seem to skid on the tracks and I ...
1
vote
1answer
77 views

Loop not work, always enter in the same condition

I have a loop but always enter in the same condition, please see the picture.
0
votes
0answers
41 views

lego cleaning dust? [duplicate]

I'm a LEGO seller and buy around 20-50kg of LEGO bricks a week. I need to clean these items before I sell them. Currently I'm using the standard method using a bucket and soapy water. Although this ...
1
vote
1answer
73 views

Sticker Identification

Does Anybody Know Where This Sticker Is Used Or The Number Of The Piece, I Don't Know The Number.
2
votes
1answer
184 views

Does anybody know what this cross-shaped Lego piece is?

I have had this for I while and was wondering what it is.
1
vote
1answer
133 views

How to build ar Z6 (TR-8R) riot control baton for 75114 (First Order Stormtrooper)?

Set 75114 has two guns but I would like my stormtrooper to have the iconic melee weapon. How can I build one?
-3
votes
1answer
85 views
2
votes
1answer
108 views
2
votes
1answer
106 views

Instructions for LEGO bag dated 2007 bought at a Thrift store

I need the instructions for a LEGO parts bag I purchased at a Thrift store
25
votes
6answers
4k views

Does the LEGO Group condone war toys?

What is the LEGO Group's position on war toys? Other brands make tanks and army stuff. I noticed LEGO sets include more realistic guns in the Star Wars range than they used to. What's up with that?
3
votes
1answer
129 views

Lego G-Scale train?

I have a 45mm gauge LGB-based G-scale garden railway and want my grandson to have a push-along loco and some rolling stock for it. Can we make this with Lego? The wheels need to be non-metal and have ...
1
vote
0answers
28 views

HiTechnic Color Sensor analog

HiTechnic sales support said that HiTechnic color sensor hasn't been manifactured yet. Currently it's out of stock in HiTechnic shop. Is there any analog of this sensor except NXT/EV3 color sensors?
1
vote
0answers
47 views

Infrared sensor behavior

I'm developing a small program with the LEGO's Ev3 development tool. I'm trying to make the robot rotate, 30° at time, and check if the infrared sensor detect something than make something and stop. ...
12
votes
3answers
4k views

What's the best way to link two (or more) LEGO Power Functions (PF) train motors together?

Last Christmas I built an extended Emerald Night train to run around the tree. To get it to work I had to add a second Power Functions motor. I tuned both IR receivers to the same frequency and slowly ...
1
vote
0answers
60 views

Is there an alternative replacement motor piece for 4.5 V Trains?

Is it possible to find on a market a simple 4.5V electric motor, that can be installed into LEGO Part 564c01? The service pack No. 5000 is more and more difficult to find.
1
vote
2answers
161 views

RCX Windows 10?

I am a teacher and I use for years Lego RCX in science and technology . Now that I have Windows Surface Pro 2 , I would like if possible to use my RCX robotics kits on windows 10 ? Is that possible ?
0
votes
0answers
31 views

Lego brick management tips [duplicate]

My 4 year old son loves to play with Lego and we encourage him. We built a few sets together and he mostly builds stuff from his own imagination. He likes to build new sets with us and to follow the ...
5
votes
2answers
102 views

How to store a matrix of values and pick out certain elements and compute the difference?

I at the moment am trying to make an EV3 robot which is capable of following a gradient decent method. The idea was to store a discretized function in a 2D matrix, and make several lookups in that 2D ...
4
votes
3answers
954 views

Pick A Brick delivery times

I am about to order some bricks using the online Pick A Brick service. Unfortunately, its delivery time information is confusing. In the right column of the checkout page, it says: Your item will ...
0
votes
1answer
38 views

Order Number Problems [closed]

I think something is wrong with the email I use and for whatever reason i didn't get the email with the order details after I ordered. I quadruple checked that I got the email right before I typed it ...
1
vote
4answers
8k views

Where can I download the EV3 education edition software for free?

I have a site license but I'm not able to find the download for the software anywhere. Any help would be greatly appreciated.
3
votes
1answer
44 views

Shipping to Turkey

I am trying to order different single bricks with Pick a Brick system. It seems there is no shipping options to Turkey. I already picked around 32 Euro pieces but couldn't be able to change the ...
9
votes
1answer
113 views

Dichotomous key for identifying / discovering LEGO pieces?

Is there a dichotomous key available for looking up LEGO pieces by progressively answering information about their characteristics? It doesn't necessarily need to fit the strict definition of a ...
5
votes
3answers
4k views

Who else produces Duplo-sized blocks?

I gather that Mega Bloks Mini Bloks are the same size as Duplo, and are compatible with it. Do any of the other major brick manufacturers make similar bricks? Knowing the possibilities can help when ...
5
votes
2answers
447 views

What is the special Lego Movie 1x1 element shown in the Channel 4 documentary 'Inside Lego at Christmas'?

I recently watched the UK Channel 4 documentary 'Inside Lego At Christmas' and in it, one of the employees of Bright Bricks showed a tall 1x1 element that he described as a brick that Lego came up ...
6
votes
2answers
2k views

How to control a RCX from a Mindstorms NXT

I have both an RCX and an NXT. I would like to control the RCX brick from the NXT (and possibly communicate back to to the NXT from the RCX). I would like to avoid purchasing the Mindsensors RCX to ...
0
votes
2answers
64 views

Lego Cleaning/Sterilisation [duplicate]

I am just looking to see if anyone knows of a lego product that exists that allows you to sterilise your lego using your dishwasher. Thanks
1
vote
1answer
39 views

Can I change the spec of a MyBlock [duplicate]

If I create my own block (MyBlock) with one param and later discover that I should have used 2 params or different icon or something like that, what do I do? Is it possible to change the existing ...
3
votes
0answers
190 views

Building instructions: Robot Spider Pen by Ricardo Oliveira

Some time ago I found the following youtube video by Ricardo Oliveira of a small NXT plotter that crawls over a whiteboard. It has two strings that can be shortened through coils and with this, it ...
4
votes
3answers
474 views

How can EV3 Gyro sensor drift be handled?

EV3 robots can use a Gyro sensor to determine the direction the robot is heading. The initial conditions are important. The sensor needs to be still and then the sensor reset. However, once in a ...
25
votes
3answers
3k views

What is inside the “weight element” brick?

I own a few bricks that contain a weight inside of them. 52g according to Lego. What exactly is inside of these bricks that makes them heavy?
1
vote
1answer
103 views

Education EV3 Software Site Licence - installation on teachers computers?

WE've recently purchased some mindstorms ev3 education sets plus the site licence of the Software. in Switzerland many teachers do their preparations at home, so my question is, am I allowed to ...
4
votes
2answers
199 views

How can I reuse LEGO part bags?

I go through so many of these annoying plastic bags. Unfortunately, not many places recycle them. Are there any ways they can be re-sealed?
2
votes
2answers
95 views

How do I find a set number without box or instructions?

So my brother found a open bag of a LEGO Chima kit. It had some of the pieces in it. I want to replace the missing pieces but I don't have the box. I tried looking for unique pieces but it didn't seem ...
0
votes
1answer
104 views

Why did LEGO stop selling sets for <1.5 year old (Primo etc)?

LEGO used to make Primo sets and baby toys for 6 month+ babies. As a parent of a young child the only option I have is Lego Duplo that isn't quite ready for her age. Are used Lego Primo sets safe ...
9
votes
2answers
2k views

Which is faster: M motor or XL motor?

I understand that the M motor has an adequate amount of speed, and the XL motor is best known for its torque. But is the XL motor really faster than the M motor? Or is it the other way around? I am ...
2
votes
3answers
288 views

Where can I find the instructions for the crane on the back page of Lego Juniors: Construction (10667)

Where can I find the instructions for the crane on the back page of Lego Juniors: Construction (10667), as pictured. I tried contacting Lego Support who replied unhelpfully with: We currently have ...
1
vote
2answers
753 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
1answer
120 views

Piece to hot air balloon won't fit. Anything I can do?

I am putting together the 41097 hot air balloon with my daughter and there is a red piece that shows a rod should go through however the rod will not go through no matter what we do. There seems to be ...
13
votes
2answers
418 views

What do the terms “vintage” and “classic” actually mean?

I often see terms like "vintage" and "classic" used to describe LEGO sets (especially on ebay, but I've seen them elsewhere, too). What do these terms mean? How strict is the definition?
10
votes
1answer
306 views

Is there a web service showing me the LEGO set with the most parts?

I'm interested in a challenge building a set with very much parts. I thought of the Unimog U400. But is there a webservice, where the sets are sorted by number of parts?
0
votes
1answer
81 views
1
vote
3answers
341 views

Reading current motor speed, opOutput_Read

I'm trying to read current motor speed using direct command: Instruction opOutput_Read (LAYER, NO, *SPEED, *TACHO) Opcode 0xA8 Arguments (Data8) LAYER – Specify chain ...
5
votes
2answers
328 views

Can you identify this yellow crane?

Can you identify this one? It's part of a series of models I had as a kid that I want to take apart for my own kids now, and I'm looking for the original instructions.
4
votes
1answer
188 views

Can you identify this model of a yellow truck?

It's part of a series of models I had as a kid that I want to take apart for my own kids now, and I'm looking for the original instructions. Can you identify this one?
1
vote
1answer
43 views

Duplo Train Resources

I recently bought the 10508 train set for my 3 year old and he just loves playing with it. I am aware of the 10507 and 10506 sets to expand further. Are there any other resources available to buy ...

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