2
votes
2answers
186 views

Identify age of parts from yard sale

I purchased a box of LEGO bricks from a yard sale. Some of the 1x6 bricks are hollow with 2 small slants in them. Other 4x6 plates are very thin with square holes in the bottom. It also came with ...
1
vote
1answer
198 views

“file error!” appears on nxt why?

I tried to upload this program to my NXT, but for some reason I am not able to run it properly as it terminated with the message file error!. No idea why. I am trying to read a .txt file into a char ...
3
votes
1answer
60 views

fgetc() moves pointer one step forward

I have opened a file using handle = fopen("rw.txt"). The file consist of 3 values which is separated with spaces ex: 12 23 34 using isspace(fgetc(handle)) Problem here is that fgetc() increments ...
3
votes
1answer
84 views

identifier expected?

What identifier is expected here? #import "rw.txt" rw task main() { if(rw != NULL) { OnRev(OUT_A,75); Wait(100); } } Error: # Error: Identifier expected I don't seem ...
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
81 views

RCX 2.0 Firmware downloaded successfully but “Run” does nothing

I recently was able to install RIS 2.0 for the first time since I just got a 32bit Windows 7 machine, I got the IR tower to download the firmware to the RCX 2.0 and it showed exactly the same screens ...
3
votes
2answers
159 views

Need help identifying this set

These came in a clear bag labeled with the number 2. Dated 2011. Thanks in advance!
6
votes
2answers
258 views

What about these old houses?

I recently inherited two old lego-buildings. Unfortunately I have virtually no information about the history of them other that they been part of the inventory of an old hardware store closed a decade ...
3
votes
1answer
182 views

Overview of Engineering Principles incorporated in Technic LEGO sets

I run an after-school technology education program and want to expose kids to real-life engineering by means of having them build commercially available Technic kits which we then deconstruct and ...
3
votes
1answer
180 views

What is the best way to get in contact with a Lego expert?

Catawiki is looking to hire a Lego expert to estimate the value of offered sets and arrange its weekly Lego auction. Where and how could we find people who might be interested in such a position?
5
votes
1answer
270 views

Need help identifying this star wars set

Need help identifying this old star wars set, trying to rebuild my LEGO sets!
3
votes
1answer
119 views

Mindstorms EV3 3D building instructions no longer working in Chrome

Lego Mindstorms EV3 building instructions in 3D (so that one can rotate the model around and stuff) are available. This used to work fine on my machine in Google Chrome. However, I can no longer get ...
4
votes
3answers
241 views

LEGO minifig authenticity

I bought 3 mini figures from Amazon because I wanted specific mini figures and did not want to spend $30 plus doing so with bag ordering and opening. I got the figures and they look authentic. The ...
5
votes
3answers
200 views

What are the differences between the two available pizza elements?

In the "Buy pieces" section of the Lego website, I looked up the pizza element. It turns out there are actually two of them! Element 6102555 costs $0.41/piece and 81867 costs $0.37/piece, but they ...
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 ...
3
votes
1answer
153 views

No response when controlling the Mindstorms EV3 brick over Bluetooth

I am trying to control the EV3 using direct commands over a Bluetooth connection. There are no issues pairing the brick with a PC or phone, and opening the serial connection works fine, but sending a ...
2
votes
1answer
111 views

Large blue windscreen with shuttle decal

Can someone help me identify this part, I got it in a bulk lot and want to know what sets are in there.
1
vote
1answer
125 views

How good are used lego bricks on bricklink?

In my life I've only ever used new Lego bricks; however, I'm now interested in purchasing large quantities of bricks and Bricklink's used section has significantly cheaper prices. I know that the ...
1
vote
1answer
132 views

I have a series 14 Sasquatch (Square Foot) missing facial paint, is it normal?

Hi I have the camera holding Sasquatch but he does not have the black eyebrows and muzzle. The eyes and teeth are there but the rest is just brown.
1
vote
1answer
267 views

EV3 with NiMH batteries

Could I use 6 NiMH 1.2V batteries and keep pressed the small black circle in the battery compartment in order to adjust the battery gauge and low battery alarm?
3
votes
3answers
193 views

How can I fix my chewed up LEGO head?

When I was about 8 I used to bite down on loose LEGO heads to "fix" them. Of course after the heads "treatment" they would have chew marks around the neck. Is there any way to make these marks less ...
5
votes
1answer
85 views

What parts are include with this light blue bike?

I need to find the part numbers of parts on this bike.
0
votes
0answers
12 views

NXT error code 10003 on startup [duplicate]

I run Mac OSX Mountain Lion on my computer. When I got my new computer, I had to reinstall Mindstorms NXT because my disk was scratched and therefore corrupted, I had to download it from the ...
1
vote
1answer
122 views

Trying to ID a piece.

Light grey, approx. 1 in. X 1 in. Shaped like a bottom jaw or a digger shovel. It has a half round hump in the middle of the piece.
6
votes
2answers
167 views

Selling custom LEGO image mosaics using original LEGO bricks without breaking LEGO's Fair-Use Policy

We have designed software and an accompanying site to convert images into 48x48 (or larger) LEGO mosaics; we use the current LEGO color palette, use image dithering to improve color availability, ...
4
votes
1answer
81 views

Neutralize brick scent

I store some used Lego sets in household plastic boxes originally used for candy. I thought they were ideal, but now I found out the bricks have caught an unpleasant candy scent -- despite cleaning ...
7
votes
1answer
127 views

Where is this large beige motor with battery box from and how does it work?

I have a LEGO Technic motor with a built in battery box for 3xAA batteries (thus 4,5 volts). Could you help me identify it? What set does it belong to and how old is it? Colours are beige and ...
3
votes
1answer
170 views

Why can't I combine a EV3 Motor with a Technic frame in LDD?

It is easy and stress-free to attach a frame to a large motor in a vertical or horizontal manner as shown in the picture in real life. But I can't do the vertical version inside LDD. Anyone knows why? ...
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 ...
3
votes
1answer
114 views

How can I power my LEGO pneumatic engine?

I have just finished building a simple LPE, but have no means to power it. I live on a farm and have access to a small air compressor, would that work?
4
votes
1answer
110 views

What prevents a 12V motor, when pushed by hand, from providing DC electric out?

This question is somewhat related to a similar question I asked about whether pushing a 12V train motor (such as the one below) would damage it. See title "Set 7865: six wheeled Lego® train motor ...
1
vote
1answer
201 views

How much do you think these Lego's are worth?

I've got some very old LEGO brick from the 50's, and am wondering how much they are worth. I'd like an estimate because I know that they are now collectors items that might be worth something. Here ...
2
votes
3answers
106 views

What is the easiest option to start making instructions?

I'd like to make instructions for my kids, which they could read either on paper or on a tablet. What is the easiest option to achieve that, ideally using open-source software (and running on Linux)? ...
1
vote
1answer
176 views

EV3 SPIK3R Mission 5 Just keeps backing up

I completely built the Mindstorms EV3 Spik3r. Missions 1-4 worked fine. However, with mission 5, and using the pre-made program, the robot just keeps backing up, instead of facing the bug, shooting it ...
3
votes
1answer
91 views

How to measure green/blue reflected light on EV3?

As I know there is no way to turn on green/blue reflected light on EV3 color sensor. Is there a way to do it using NXT color sensor and EV3 controller? Or the only way is to use NXT controller ...
1
vote
1answer
232 views

pc program to receive data from EV3 via usb/bluetooth

I'm looking for a library to create a desktop program. It should receive a data from EV3 brick programmed by standard EV3 software. Currently I consider 2 approaches: 1. EV3 brick sends a bluetooth ...
2
votes
1answer
98 views

Use for “Technic Coupling, Tight” and “Technic Coupling 3,5-6 Ncm”

Power Functions set 8293 contains these pieces http://brickset.com/sets/containing-part-6025005 http://brickset.com/sets/containing-part-6036892 and they make the set much more expensive than just ...
3
votes
1answer
128 views

Vintage heads still in production?

Are vintage Lego heads with the classic grin still in production? I am having trouble deciding whether the head-with-grin piece (element ID 9336, called "MINI HEAD NO.1") which is produced today (and ...
0
votes
1answer
53 views

When was the RCX 2.0 released?

I know that the original RCX was released in 1998 and the NXT was released in 2006, but when was the RCX revision 2.0 released?
1
vote
1answer
531 views

Batman Arkham Knight Batmobile Instructions

Where can I find a set of instructions for the Lego Batman Arkham Knight Batmobile?
2
votes
1answer
67 views

Transfer BrickOwl wishlists to BrickLink

Is there an easy/automated way to transfer BrickOwl wish lists to BrickLink? I have wishlists on BO for each incomplete set I own and would like to move them over to see if BL can complete them ...
3
votes
2answers
201 views

At what voltage do the c1 and c2 lines run at when controlling a lego servo motor?

related: how to control a servo motor from a raspberry pi The raspberry Pi normally outputs 3.3 V signals from it's pins, however there are logic level converters for interfacing with higher-voltage ...
8
votes
2answers
215 views

Purchase a list of lego parts

If I have a list of lego parts (exported from Lego Digital Designer or Bricksmith) is there an easy way to purchase all of the parts either on Lego's Pick a Brick or on Bricklink? I know that I can ...
3
votes
1answer
189 views

What Technic vehicle is this in black and red?

Any help with the set this piece is associated with, would be appreciated.
6
votes
2answers
150 views

Making an ATM with an EV3

I am building an ATM using my LEGO Mindstorms EV3, but I ran across a problem. The problem is that I want to be able to input the amount of money that I want to get out of the ATM but I can only have ...
3
votes
2answers
155 views

Value/Where to sell my old Lego collection

I'm sure you've heard this asked a million times but I have no idea where and for what price I should be selling my old collection for. Things I do know about what I have: I'd assume they're ...
4
votes
4answers
106 views

What are good DUPLO projects for around 2 year olds?

It is always good to have a bunch of (short) building projects to suggest to our toddlers. Here I would like to collect some easy ones for DUPLO. I'm not particularly interesting in creating ...
1
vote
1answer
106 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 ...
5
votes
1answer
202 views

What is this snapping brick for / which set is it from?

I've found this DUPLO brick: The red part can be pushed in and snaps out when the button on the top is pressed: Any idea which set this is from or what it could be used for?
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 ...

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