2
votes
2answers
2k views

Is there a fix for an NXT reporting “File error!” when running an EV3 program?

I downloaded the new EV3 software from Lego and installed it on Windows 7. The EV3 software runs. I plugged in an NXT using a USB cable. EV3 can edit the memory on the NXT and remove ...
2
votes
1answer
69 views

What are good books for building techniques of LEGO Technic

I've been searching for good resources for especially LEGO Technic. I find the Unofficial LEGO Technic Builder's Guide by Paweł “Sariel” Kmieć. The book is very good at explaining things. Beside that ...
2
votes
3answers
117 views

Torso and legs with different LEGO logos. Are they genuine?

I have a torso with rounded edges and "Lego" stamped on top. The arms not stamped. I also have a torso with straight edges and "Lego" stamped on top. The arms are stamped. Are these both genuine? I ...
2
votes
1answer
76 views

Reference LEGO Technic 42043

When installing the tubing starting on page 273 of the instruction booklet, the suggested length seems to be too short for the installation. Is it permissible to cut the tubing provided to fit the ...
2
votes
1answer
81 views

Can someone please help me ID these parts?

I'm trying to recreate this small creation, but don't have a parts list: Going from top down, here are my best guesses, but I'm not very good at this: 2654 (Black) Plate, Round 2 x 2 with Rounded ...
2
votes
1answer
109 views

What Is This Piece

Does Anyone Know What Number Piece This Is?
2
votes
1answer
194 views

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

I have had this for I while and was wondering what it is.
2
votes
1answer
111 views

Star Wars phantom

I am new to Lego. I can't figure out the instructions as to where the gun and black hair piece go. It looks like they go in the Phantom somewhere, am I right or wrong? Do they snap in? Also, does the ...
2
votes
1answer
106 views

How can I connect CCBS parts to plain LEGO system?

Can anyone explain how the front shoulder was built in this MOC? Are there bricks that allow easy connections between CCBS and plain System?
2
votes
1answer
115 views

I need help Identifing this set by the picture

I have a blurry picture of a set I found at a LEGO fair, and I would like to know what it is: Thank you.
2
votes
2answers
105 views

Gibberish Sound Effect

I am now creating my first LEGO stop motion animation with sound effects. I do not want to use a specific language for them speaking. Instead, I am using subtitles. For the talking sound effect, I ...
2
votes
1answer
160 views

What are those 6 extra studs for in 42000 Grand Prix racer?

I recently purchased a set, Technic 42000 Grand Prix Racer, that I am very happy with. However, I am perplexed by the fact that the set came with 6 extra transparent 1x1 round plates (studs). As you ...
2
votes
1answer
117 views

Groove dimension of 4216 or 88393?

What is the dimension of the groove of LEGO part #4216 or #88393?
2
votes
3answers
2k views

The Mindstorms EV3 Software crashes on OS X Yosemite 10.10.3. What do I do?

It's crashing on startup which is really irritating. When debugged with terminal it says this: Unhandled Exception: System.UnauthorizedAccessException: Access to the path is denied. [ERROR] FATAL ...
2
votes
2answers
169 views

What is the best way to create an authentic weatherboard wall?

I am working on a house where I want to create a weatherboard look for the outside walls. I'm not certain the best way to go about this. Currently I'm using the horizontal side of a 1x2 profile ...
2
votes
2answers
100 views

Which wheels are suitable for Power Functions M-Motor

I'm attempting to build a small self-propelled LEGO robot. Initially I was attempting to use some cheap DC hobby motors but I spent a lot of time trying to attach LEGO wheels to the motor's 3mm ...
2
votes
3answers
227 views

Do you use the plastic buckets for purposes other than organizing your bricks?

We have several bucket sets like #5560. Now that our collection is growing, it's becoming harder to find what we need in the buckets even though we have them sorted by color. Plus they are in a ...
2
votes
1answer
224 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 ...
2
votes
3answers
535 views

Where can I get LEGO bricks to build a life size wall?

I would like to create the structure, meaning walls of my stand in an exhibition, made by LEGO bricks, so I wonder if I can order great quantities of bricks just to create this and if I can talk to an ...
2
votes
1answer
73 views

How to make NXT bricks communicate information?

Is it possible to connect, in some way, two NXT bricks that has program functions running on both. For example, Brick one would tell brick two that it is okay to start a program. Are there any sensors ...
2
votes
1answer
309 views

Where will the World First Lego League be held in 2015?

Every year First Lego League (FLL) is held in 3 different countries. I know that the world festival will be held in St. Louis, but where will the other two be? Last year it was held in Germany and ...
2
votes
1answer
315 views

Where to order custom mini-figs in Europe

General question is are there any custom Lego minifig online stores in Europe like there are many in the US ? In detail: My friends friend is getting married and she would like to surprise them with ...
2
votes
1answer
612 views

NXT or EV3 gyro sensor

Do NXTs or EV3s have gyro sensors or built-in gyro sensors? How can I know the direction of the robot?
2
votes
1answer
308 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 ...
2
votes
1answer
360 views

What products, if any, have ever been recalled by Lego?

The question says it all. Have there ever been any recalls of products by Lego? If so, what were they?
2
votes
2answers
191 views

identification of lego set by color and shape of inner box

I'm trying to identify a lego set only knowing the color, shape of in inner package. The inner box is blue, dimensions are 18 x 11 x 2 3/8" and 9T plastic compartments, There is a 1984 Lego Catalog ...
2
votes
1answer
301 views

Pushing lego city train [duplicate]

Are you able to push the lego city train around the tracks without damaging it or do you always have to use the batteries to make it go.
2
votes
3answers
2k views

What is a normal range of reading of the Light Sensor using EV3 Raw Sensor block?

EV3 software does not support the Light Sensor. It does support the Color Sensor. The solution is to use the Raw Sensor Block. What is "normal" for raw sensor block readings? I'm getting readings ...
2
votes
1answer
27 views

Absolute position regulation NXC

I am trying to position the LEGO NXT motor exactly at a certain absolute angle: PosRegEnable (OUT_A); PosRegSetAngle (OUT_A, 0); Wait (500); // to read sensor value ...
2
votes
1answer
126 views

What is the name of this 2x2 curved piece with a lip?

What is this piece called, and what are its degrees?
2
votes
2answers
77 views

Help with marks?

I am trying to find out the significance of 3 marks that appear on the back of base plates. There are 3 circles in a row. The first contains numbers 0-9 in increments of one with a small arrow ...
2
votes
2answers
89 views

What set are these bags? Detectives wanted

I just bought this collection of LEGO parts. I am mostly curious about the sealed bags. Most are numbered 2011. Thanks for the input in advance! More detailed pictures: http://imgur.com/a/ebkvz
2
votes
1answer
114 views

Please help me identify these Lego and Bionicle sets numbers

Lost many of the lego parts in a flood. I've put parts together using best guess so some pictures may represent more than one. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. ...
2
votes
1answer
83 views

Where can I buy bulk DUPLO sized bricks?

I am working on a project where I need LOTS of basic DUPLO sized bricks and/or plates. I need only the simple sizes, 2x2 and 2x4 and possibly 2x6. I do not want any pieces with curves, slopes, decals, ...
2
votes
1answer
204 views

Where does these knock-off LEGO's come from?

These are some of the non-LEGO pieces I had in my LEGO collection when I was a child, and I was told they were old LEGOs, but any site on the history of LEGO completely fail to show anything like ...
2
votes
2answers
132 views

Age recommendations explained? [duplicate]

Can you explain the rationale behind age recommendations for various Lego products? For example, what makes a 4-7 rating different from a 6-8? Is it unreasonable to buy a set labelled 12+ for my very ...
2
votes
1answer
176 views

Differences between EV3 Gyro and Hitechnic Gyro

I understand that the Hitechnic Gyro was made for NXT but are there any advantages of using it over the normal lego gyro in EV3??
2
votes
1answer
55 views

I need an NXT motor adapter

I'm trying to get an NXT motor adapter to this that I'm getting: If you don't recognize this, the parameters said : 80mm 2000 ±10% RPM 28.89 CFM Rifle 20.9 dBA Please tell me what this is ...
2
votes
1answer
144 views

need help identifying which set these 3 bags are from

I ended up with three lego bags but need help identifying them. mostly light grey and dark grey with some blue and burgundy. The bags say 2011 lego on recycle symbol. There are two clear half ...
2
votes
1answer
186 views

Can you use a beveled gear as a pinion?

I would like to use the PF servo motor for steering, however it is very large - I was playing with the idea of having it mounted vertically, and then using bevel gears to change the direction of the ...
2
votes
2answers
363 views

How to design ackermann steering with lego wheel bearing front?

I wanted to use a steering system based on the 11949 part: But I am not sure how to use it in an ackermann system - I would like to be able to have drive and suspension on the wheel, and this piece ...
2
votes
1answer
322 views

EV3 turning in circles

New programmer feeling my way around. I set the most simple "steering block" to 25, the power to 50, and the number of motor rotations to 40 or 50. Then I let it run expecting the bot to go in a ...
2
votes
1answer
120 views

How do I make use of the full SD-card after installing ev3dev

After writing the image to the 8G microSD-card, initial setup of network and installation of git (with apt-get) I could not install anything else since I was out of diskspace. This confused me. But df ...
2
votes
1answer
174 views

Identify brick with internal battery, light and sound

I just bought a bulk lot of second-hand bricks and found this odd one inside. It has a black panel on one side and when pressed it plays a screeching sound. Through the transparent purple top I can ...
2
votes
1answer
93 views

Absolute Turning Motor in NXC

How can I turn my motor to 123 degrees, not for 123 degrees? I tried the PosRegSetAngle("output", "angle") command and didn't work. Documentation for PosRegSetAngle
2
votes
1answer
114 views

Can I identify the colour of objects 5mm in diamater with an EV3 Colour sensor?

My plan was to make a simple robot to sort beads like this:. Its the Hama Medium size beads, they have a diameter of 5mm so they are fairly small. After some testing, reading and asking here I figured ...
2
votes
1answer
271 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, ...
2
votes
1answer
121 views

What is the quickest way to weed out compatible bricks from loose LEGO?

When I buy LEGO in bulk, I often find that there are at least a few clone brand bricks mixed in with them. What is the quickest way to weed out these non-LEGO parts?
2
votes
1answer
514 views

Programming The Lego Mindstorms T-Rex from EV3 Laboratory

I bought the book The Lego Mindstorms EV3 Laboratory fron Daniele Benedettelli. I buid the T-Rex chapter 15 and when I tried to programming the T-Rex (chapter 16) I have a problem. I'm not able to ...
2
votes
1answer
125 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 ...

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