1
vote
1answer
89 views

How to use two NXT bricks for 3+ motors and 4+ sensors?

I need to use multiple bricks in order to use more motors and sensors. I need to read sensor values, and tell motors to move. I've tried using bluetooth, however my attempts haven't been very ...
6
votes
0answers
55 views

What plastic do Quatro blocks use?

I recently picked up a heap of Quatro blocks, and noticed that the plastic seems to be much softer than the normal ABS-based Lego and Duplo blocks. Does anyone know what kind of plastic was used in ...
4
votes
1answer
132 views

Need help fudging a group in 8039

So, I'm building "8039 Venator-class Republic Attack Cruiser ™ Star Wars TM" and I've hit a snag. I need help fudging the instruction from page 76 of book 1 for that set (see picture below). I'm ...
3
votes
1answer
62 views

Did all the nxt 2.0 lego content vanish from the Lego website?

I keep finding links to pictures and projects that evidently used to be on an nxt content site at lego. Is all of that information just gone? A site called nxtasy also seems to have vanished. Are ...
8
votes
4answers
17k views

Is it possible to buy a bulk of 1000s of basic bricks (mostly 2x4)?

Several years ago I remember being able to walk into toy shops and actually shovel lego bricks into a bag and thus buy them in bulk. Unfortunately I can't seem to find stores anymore that offer this ...
6
votes
3answers
2k views

Which LEGO Technic sets include instructions to add the Power Functions accessory box?

Some LEGO Technic sets apparently come with instructions to add a motor, using the pieces from the Power Function Accessory Box (set 8293). Is there a list of the sets which do contain such ...
0
votes
1answer
138 views

Are variables always global with NXT?

New to NXT software. What I'm trying to do is get my motor to go one of 5 distances, but I'm not sure how to choose between those actions. What I thought of was setting 5 variables to 5 sensors. The ...
2
votes
2answers
108 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 ...
1
vote
0answers
119 views

Emmet's couch model in official sets different than the movie?

Lego's official building instructions for The Sea Cow set include building instructions for building Emmet's couch from The Lego Movie. Are there differences between this model and the one actually ...
3
votes
1answer
103 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
96 views

How can I use multiple switch options in Lego Mindstorms EV3 software?

What I see is just a simple if/then/else. What I am looking for is to be able to add multiple options, more than yes/no. I use a motor as a switcher, so I rotate it to some position and measure its ...
11
votes
4answers
8k views

What was the first set produced by The LEGO Group?

What was the first Lego set produced, and when was it first released?
3
votes
2answers
121 views

Identify these (Technic Steering) parts?

These three parts do not have part numbers on them, but it is clear they are LEGO parts (they have LEGO printed on them). I am trying to track down the set that these belong to, or at least a part ...
0
votes
0answers
22 views

Are there any additional robo center downloads for the nxt-g software?

It would be nice if there were additional entries under the animals, vehicles, machines and humanoid tabs. Supposedly there was some official LEGO web component to the software which appears to be ...
3
votes
1answer
1k views

How do I update my NXT firmware using EV3 software

The new EV3 software tells me to update my firmware on the NXT. When I go to the tools menu and select update firmware it tells me the NXT brick can not support this function.
7
votes
3answers
181 views

What techniques can be used for laying plates at 45° angle?

I've seen a number of techniques for laying individual elements at 45° angles, but I need a consistent method for laying down larger plates at 45 degrees while maintaining close contact with the base ...
2
votes
1answer
81 views

EV3 Block problems?

I don't see what is wrong with the way i made my program. It looks like this. The idea is that in the while loop [01] shall the robot move forward until it see something brown. If it see ...
6
votes
2answers
559 views

Damage Boiling LEGO Bricks

I bought some LEGO bricks from shop on Bricklink and received them yesterday. In order to make sure that the pieces were nice and clean (they were used) so that my two year old can play with them, I ...
30
votes
5answers
3k views

Has anyone made LEGO fly?

It may not be the ideal material. But has there ever been a LEGO model airplane with the ability to glide, under power maybe, or some other kind of successful lifting airship? Helicopter, blimp, kite, ...
3
votes
1answer
35 views

How to minimize the impact of erroneous sensor readings?

A group including myself are using the Lego Mindstorm kit to design a robot that is going to compete in a school competition. However, the sensors aren't as reliable as we would like them to be, ...
4
votes
1answer
544 views

Can I buy an add on educational kit for my retail EV3?

We ordered the retail version of Lego EV3, and my son loves it and wants to do more. Are there any add on kits we can buy to expand upon what we have, ie add on motors or special tech pieces, or an ...
0
votes
1answer
412 views

Should I buy the retail or education version of Mindstroms EV3?

There are other questions that list the differences in the retail and educational version but I cannot judge which one I should buy (educational or retail). I am buying Mindstorms for the first time, ...
3
votes
2answers
124 views

Can I use the NXT 2.0 programming software with my educational set?

I have bought the 9797 NXT base educational set. It didn't include any software. I know that I can freely download the NXT 2.0 software (which was included in the 8784 retail set). Is it possible to ...
1
vote
1answer
167 views

Price of EV3 education software

After looking around on the Lego Education website, I failed to find the price of the education software. I currently have the retail version of the software, but I want the extra features and blocks ...
3
votes
2answers
575 views

EV3 Education Edition software license

I got a new EV3 education kit. Can I install it on a several computers or does the license work on one computer only? Thanks!
14
votes
4answers
22k views

What is different between the EV3 Home and Educational sets?

The newly announced LEGO Mindstorms EV3 sets for home and education have some differences, but it isn't clear to me what they are, specifically. It seems that have different sensors, perhaps ...
5
votes
2answers
471 views

Can I change the firmware on a Retail EV3 Intelligent brick to the Educational version?

The LEGO Mindstorms EV3 comes in both educational and retail versions. The educational version differs in bricks, sensors, a rechargable battery and datalogging capability. I would like to know can I ...
27
votes
10answers
19k views

What's the most cost effective and efficient way to buy bricks?

After a 20 year hiatus I picked up LEGO again as a hobby. I've been into the Trains lately and need bricks. I found a couple places to pick them up but they all suck for various reasons. The first was ...
4
votes
2answers
155 views

Personal part collection on the web (Bricklink or alternative)

I started using Brinklink a few months ago and although I really like it the interface is terrible. I am looking for a specific feature but don't know if it's unsupported or just I cannot find it. ...
1
vote
2answers
2k views

How to use Power Functions with Mindstorms EV3?

Having learned that Mindstorms EV3 doesn't work directly with Power Functions, Q: Can you use Power Functions motors with the EV3 programmable brick? A: No, the connector does not match. I ...
2
votes
1answer
44 views

Retrobrite cleaning on old cellulose acetate bricks?

Is Retrobrite (cleaning with hydrogen peroxide, oxyclean, sunlight) effective or ineffective or, worse, downright destructive on old cellulose acetate bricks? My understanding is that method of ...
1
vote
0answers
36 views

RGB sensor HOWTO use?

I've got an RGB sensor (this one with the three LED thingies) and wonder how to access it using NXC. I know I can SetSensorColorFull(IN_1); and then access it using ReadSensorColorEx or, for ...
3
votes
2answers
151 views

Is it possible to change the OS in the EV3 Mindstorm Brick

I'd like to know how to change the OS embedded into the EV3 mindstorm Brick ( list of it ). For example, would it be possible to replace the existing one by a linux release without losing any ...
6
votes
2answers
94 views

How to remember initial position of a robot and return to it

I have an EV3 robot with motors, like a car, that can move forward/backward and left/right and have some sensors attached. I want it to remember its initial position by remembering all the movements ...
0
votes
0answers
37 views

Can Mindstorms EV3 communicate using protocol 802.15.4?

My aim is to make the robot communicate using protocol 802.15.4 through a USB dongle 802.15.4 over 6LoWPAN. The robot has to be able to get information from TelosB. I wonder whether this possibility ...
9
votes
4answers
655 views

Is “public transport” train compatable with Lego City track?

Among other things, set 8404 contains a train but it doesn't come with any track pieces (see set 7499). Is this train compatible with these Lego City tracks? I see where it's more of an electric ...
4
votes
1answer
108 views

Small lego train sets on narrow gauge track?

Will Lego sets such as "LEGO Christmas Train" 40034 or "Emerald-Express" 31015 run (manually) on narrow gauge lego track? These sets use a wheelbase that is only 4 studs wide and wheels that have a ...
13
votes
2answers
572 views

Why are they called “minifigs”?

Were larger-scale LEGO figures the standard at some point in the past? It just seems odd to me that they're called "mini" when they're basically the only kind of LEGO figures available (not counting ...
3
votes
0answers
65 views

Communication between two Ev-3 bricks

How the communication between two Ev-3 bricks is done over Bluetooth? What is the nature of data that can be communicated?
6
votes
3answers
2k views

Are there any lego base plates that are compatible with duplo?

I'm thinking of making a lego table but my 2 children both use different lego. My oldest uses normal lego and my youngest uses duplo. Just wondering if there is a base plate that both types of lego ...
5
votes
1answer
342 views

Lego plate with square holes?

I have some white plates with square holes on the underside. I'd almost think they were some imitation brand if they didn't have lego stamped on the studs. Can anyone tell me the history of when ...
1
vote
1answer
46 views

What is the input to the Speed Regulator?

I wanted to buy a transformer for the speed regulator, so based on this image, I bought a transformer with 12V DC output. It works. However, discussing this with a fellow AFOL, he pointed out that ...
7
votes
1answer
213 views

Which pre-2000 set had a mobile crane with lights?

I had a set similar to this when I was younger (I am fairly sure this was before the year 2000), although: The model was red, rather than yellow. The model was more of a breakdown truck, rather than ...
3
votes
2answers
436 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 ...
3
votes
1answer
784 views

Can 10153 9V train motor be powered by the Power Functions Battery pack?

I am currently making the switch to Power Functions with my Lego Train collection and am wondering if I can power the old 9v motors that I used with the metal rails, with a battery box from the power ...
11
votes
2answers
366 views

What kind of metal/alloy were on the old LEGO 9V train tracks?

LEGO's train tracks (the actual rail part) were made from some kind of metal alloy that does not seem to oxidize, and seems to have good electrical charateristics (low resistance). Any ideas what ...
3
votes
1answer
209 views

My Own Train vs. other 9v trains

Does My Own Train series have any pros and cons (or pitfalls) against other 9v trains? Seems that is a rich series but less popular comparing to, for example, Santa Fe or regular City sets. Why?
3
votes
1answer
504 views

How hard is it to convert the new(ish) RC/PF trains to 9V?

I have a HUGE investment in 9V trains (think many thousands of USD) and was wondering how difficult it is to convert the newer RC/PF train systems over to 9V motors? Do the 9V motors fit? Does the ...
11
votes
4answers
2k 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 ...
2
votes
1answer
127 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, ...

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