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
89 views

What Is This Piece

Does Anyone Know What Number Piece This Is?
2
votes
1answer
152 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
104 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
80 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
3answers
427 views

El Capitan OS X and Nxt v2

I am running El Capitan OS x, and I have a nxt v2 brick. Is there anyway I use them together? The nxt installer crashes and the ev3 software will not update the firmware on the brick. Do I have any ...
2
votes
1answer
110 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
92 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
146 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
113 views

Groove dimension of 4216 or 88393?

What is the dimension of the groove of LEGO part #4216 or #88393?
2
votes
3answers
942 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
155 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
132 views

Access WeDo on OS X from a real programming language

I'm trying to talk to the WeDo USB interface from Python or really any real programming language. I tried the clever WeDoMore library, but can't get it to bind the WeDo. I think this is because the ...
2
votes
2answers
78 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
223 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
199 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
509 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
63 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
303 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
279 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
553 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
301 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
279 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
188 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
290 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
85 views

When and where was the first “official” fan organized Lego Convention held?

I just attended BrickCon 2013 here in Seattle (I wore my new StackExchange T-shirt). When and where was the first "official" fan organized Lego Convention held?
2
votes
1answer
49 views

Is there a changelog for any firmware updates on an EV3 brick?

When a firmware update is released for the Mindstorms EV3 brick, are there usually any changelogs for them explaining what's been added or changed? If so, where can they be found?
2
votes
1answer
61 views

Where can I buy bulk Duplo sized bricks? (LEGO or Clone brands) (NOT normal size, Duplo size)

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
152 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
115 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
150 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
51 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
131 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
170 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
245 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
195 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
102 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
139 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
76 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
101 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
251 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
115 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
422 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
131 views

Chamber of Secrets set 4730 assembly issues

We recently obtained a secondhand set with no instructions that I identified to be "The Chamber of Secrets™ 4730". So we downloaded the Building instructions from Lego's website and started to build. ...
2
votes
1answer
129 views

70728/2 Ninjago piece too short?

My son is putting together the 70728 set and the grey tall pieces in book two at step 8 seem to be too short, they leave a gap. By about a mm. Has anyone else had this experience?
2
votes
1answer
195 views

Why is there no set with much RC Straight tracks?

after visiting many Lego events (brickmania, antwerpen, BE), I wish to expend my train layout much more than adding a box or two of 7499 ... Why does Lego didn't released a set with, for example 24 ...
2
votes
1answer
148 views

Can additional MyBlock icons be added to the EV3 palette of icons available in the MyBlock builder?

I'm a big believer in using MyBlocks when using EV3. For FLL teams, every robot needs to move forward, backward, turn right, turn left, arm up, arm down. Even before a robot is built, those MyBlocks ...
2
votes
2answers
179 views

Lego EV3 - Get output device type, opOUTPUT_GET_TYPE

I would like to know what kind of motor (XL, L) is connected to EV3 output port (A|B|C|D). I need to use direct command: Instruction opOutput_Get_Type (LAYER, NO, *TYPE) Opcode ...
2
votes
1answer
1k 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?

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