0
votes
0answers
2 views

Raw RGB data to Color?

Why my code doesn't work? It should convert raw RGB to HSL. R = rgbn[INPUT_RED]; G = rgbn[INPUT_GREEN]; B = rgbn[INPUT_BLUE]; var_R = ( R/255 ); var_G = ( G/255 ); var_B = ( B/255 ); float H = 0; ...
1
vote
1answer
24 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 mini figures, ...
0
votes
2answers
19 views

Programming NXT color sensor with NXC?

I am programing Lego Mindstorms NXT 2.0 color sensor in BricxCC. I already have RGB data with the command ReadSensorColorRaw. I heard that it is easier to get the colour from HSL format. I've tried a ...
3
votes
1answer
28 views

Can I share/download a wishlist on Bricklink?

I have a whole set in a wishlist in Bricklink and I would like to share it with some friends. Can I either: Share the list via Bricklink so they can use it directly. Download it in XML so they can ...
2
votes
2answers
71 views

What's the circle piece in this MOC?

I saw a moc from here https://www.flickr.com/photos/legocy/16359474006/ But have no idea what the piece it use on the arms of the robot, and on the guns. Any ideas? Thanks. edit: Sorry I didn't ...
0
votes
1answer
31 views

How to switch an NXT sensor port by a motor port?

Me and my partner are finishing up our robot for the RobotCup and we desperately need one more motor port. We will only use 3 sensor ports, so my question was if there was even the slight chance that ...
1
vote
1answer
34 views

EV3 motor TACHO signal connection. Hardware schematic questions

I'm trying to understand EV3 motor TACHO signals circuit on the EV3 hardware schematic. Please look at the image below. Two things I cant understand. On the left side the TACHOA0 input is ...
2
votes
1answer
32 views

Remove decals from LEGO Friends mini-dolls

I am trying to remove the decals from my LEGO Friends mini-dolls. Does anyone have any suggestions for doing this? I tried rubbing alchaol on a minifigure once, and it made it all gross looking, so I ...
3
votes
0answers
38 views

What electrical contact material is used for PF Connectors?

I'm designing my own PF electrical connector and I want to have the same functional characteristics as the original Lego brick. Could you please let me know which electrical contact material is ...
2
votes
1answer
119 views

The most amount of pieces [ever] per set

Which set number had the most Standard LEGO elements to date? Technic LEGO elements to date?
1
vote
2answers
26 views

Bluetooth Conection PC-NXT1-NXT2

I want to connect, via Bluetooth, one PC with a NXT brick and then have that NXT communicate with another NXT. So I send a message from the PC to NXT1 and have NXT1 send a message to NXT2. Is this ...
1
vote
1answer
30 views

Bluetooth communication between computer and nxt using RobotC

I'm thinking starting a project involving controlling the movement of a NXT robot from the PC using RobotC. Is it possible? Does anyone have a simple code solution?
0
votes
1answer
80 views

How to find out which set contain higher plate percentage?

If I want to gather various type/color of plates to do some mini model moc works. How can I find out which set has best plate percentage or price/ plates pcs? I know there are a lot of way to find ...
3
votes
3answers
245 views

Why doesn't lego make many 2x2x4 Pieces?

I'm just wondering if anybody here knows where I can get some 2x2x4 pieces ... It seems that Lego doesn't make many just standard bricks that are 4 high ... I've found a few singles here and there on ...
0
votes
1answer
36 views

What does 191767 mean in “Paper, Cardboard for Set 4336 #1, Scala Cat (191767)”

In BL http://www.bricklink.com/catalogItem.asp?P=4336cdb01 This cardboard's name is "Paper, Cardboard for Set 4336 #1, Scala Cat (191767)" What does "(191767)" mean here in the description?
1
vote
0answers
52 views

How can I rotate an EV3 motor an exact number of degrees using RobotC?

I'm trying to rotate the motor of an EV3 by an angle of 50°. I can't. How I can rotate a NXT/EV3 motor by a given angle using RobotC?
2
votes
1answer
59 views

How can I use bluetooth on my phone to run a program on the EV3 brick?

I tried the Commander app but it seems to just let you control individual motors. I would like to run the various programs I have made using an input on the phone through Bluetooth Is this possible ...
1
vote
1answer
141 views

Issues with set 10234 book 3 pg 43

The white wing-like piece continues to pop off when placed. Has anyone figured out a fix for this or am I doing something wrong Instructions 3 & 4: src: ...
3
votes
1answer
87 views

What does “No Friction” mean in Parts “Gear with 8 Teeth Wide, Notched and No Friction”

http://www.brickowl.com/catalog/lego-gear-with-8-teeth-wide-notched-and-no-friction-11955 As title, what does "No Friction" mean in the part "Gear with 8 Teeth Wide, Notched and No Friction" ?
5
votes
1answer
123 views

Where are the electric pieces for 42029?

I was building LEGO 42029 Customized Pickup Truck, when I got to a page where I needed electrical parts, such as the battery box and the wires. I checked and these pieces were NOT included. Should ...
2
votes
2answers
76 views

What logos appear on Duplo brick studs?

Do all regular Duplo bricks have the word "Duplo" written on their studs? If not, what variations are there?
3
votes
2answers
121 views

Is this a real Duplo Train Base or fake?

I'm new to LEGO, so forgive me if this is a simple question. I purchased a lot of 30 Duplo Train Base from eBay. Below is the picture that accompanied the listing. There is a disclaimer stating: ...
-3
votes
1answer
122 views

Way to build LEGO spaceship with regular bricks [closed]

How do I build a spaceship without buying a spaceship set? With a limited amount of bricks, like, say 300 2x4, 100 2x2, and about 20 2x1 bricks. I'm looking for instructions.
0
votes
0answers
19 views

Where to buy 'retired' products [duplicate]

I was searching 'minifigures' and came across: http://search-en.lego.com/?cc=GB&lang=2057&q=pirate&ns=1&x=0&y=0 where some products are 'retired'. How would I go about acquiring ...
2
votes
1answer
56 views

Can a EV3 program run simultaneously with the Running Robot commander app?

Is it possible to run the Robot Commander app and a program on the EV3 brick at the same time? If so how would it be accomplished?
3
votes
1answer
42 views

How to upload an XML file to wishlist in bricklink

I am triying to upload an XML file with all my brick wishlist to BrickLink. However, even if I follow the instructions on the webpage, it never seems to find the product in the catalogue. If I ...
1
vote
1answer
48 views

Buy an specific set of bricks [duplicate]

I have a specific list of bricks for building a LEGO set that I found online, with approximately 300 pieces and around 70 different blocks. I have seen that one of the best ways for buying LEGOs ...
3
votes
1answer
115 views

How to fix The LEGO Star Wars Corellian Defender set

I was playing with my Corellian Defender which took me up to 4 days to build. It broke unfortunately and I am very sad since I love it very much. I need some tips to rebuild it back :(
4
votes
1answer
96 views

Is it possible to use Bluetooth to connect two EV3 bricks using RobotC?

For example to send a numeric value from one to the other?
3
votes
1answer
76 views

EV3 controlled by 8879 speed control through IR sensor

Is it possible to send commands to an EV3 brick from the Power Functions Speed Control remote? Would I have to interpret the raw sensor values to do this? Are there any references that would help?
1
vote
2answers
52 views

Is there a guide that has the number and kinds of pieces per set? [duplicate]

Is there a guide that has the number and kinds of pieces per set - for example 8 pieces of this and 14 pieces of that? I am trying to sort out a large container of multiple sets. I have thousands of ...
7
votes
1answer
253 views

Lego Escher structures

How are these done? Is it trick photography? With some kind of giveaway background it should be obvious, but I notice they are not us telling that.
3
votes
1answer
213 views

Old sets, new bricks

Are there sellers out there that compile old discontinued Lego sets with new bricks? In other words they source new bricks and instructions to put together old discontinued sets. Thanks
5
votes
2answers
116 views

Is it possible to make inverted slopes with solid studs

Many(all?) of the inverted slope pieces have solid studs and hollow studs( e.g. 3665) and a void around the stud. This(void & hollow) looks very inelegant, is it really that difficult to make ...
5
votes
1answer
145 views

Where did “LL 928” and “LL 929” come from?

Just finished putting Benny's Spaceship set together, and the Number printed on the side is "LL 929" which appears to be an increment from a much older set the Galaxy Explorer, which had "LL 928". My ...
1
vote
1answer
42 views

Mindstorm EV3 no longer recognises SD card

I followed the instructions to install leJOS on an SD card, to get Java support for the mindstorm EV3 brik. The brik detected the leJOS files and processed the whole installation procedure ...
3
votes
0answers
39 views

PC To NXT Brick via Bluetooth

We have a fully-working java programme which can connect to another computer and can send messages from this(both sides run java and we used SPP Server and Client), however when trying to connect to ...
1
vote
1answer
78 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?
1
vote
2answers
135 views

Are BanBao bricks compatible with Lego?

Does anyone has experience with BanBao bricks? BanBao World Are they compatible with Lego bricks? They have basic sets and plates which are at a good price.
6
votes
1answer
163 views

Quick way to inventory parts

I have a rather large collection of LEGO elements that are not sorted in any way, and I'd like to keep track of them. There are a few other posts about ways to keep track of elements, and I've looked ...
2
votes
1answer
74 views

Best system for lifting things without pistons

So I am Building a Big walker thing with a mining laser on bottom that can be lifted on one half and the other attached to the vehicle but I cant seem to find a way because the hooks attached to the ...
1
vote
1answer
104 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
52 views

Alternative flowers

I'm compiling a list of elements that are compatible with the Plant Flower Stem. In addition to the Plant Flower Small, I'm aware of at least two alternatives — Friends Accessories Star with Stud ...
0
votes
1answer
61 views

What are the biggest one piece wheel?

I am wondering what the biggest one piece wheel is? (the inside part and the rubber part counts as one piece in my world)
3
votes
3answers
165 views

Is there a way to set a flat plane at an angle to horizontal of less than 22.5 degrees, but more than 0?

I am building an airplane with a wing dihedral (the wings angle upwards from the fuselage), but I am using parts 44302 and 44301 interlocked as designed: Unfortunately, one click up is about 22.5 ...
0
votes
1answer
65 views

Connection between two NXT bricks

It's possible send information from BrickNXT_A to BrickNXTB_B? For example I have a touch sensor connected with IN_1 of Brick_A and I want send the result of of sentor status (1 or 0) to the Brick_B. ...
1
vote
0answers
75 views

Can I use EV3 with a TETRIX motor?

What program can I use to control a TETRIX motor through the LEGO EV3? I've heard that RobotC currently cannot be used for this. Has NI released a Labview version which I can use to control TETRIX ...
10
votes
5answers
203 views

What's the most effective way to align 1x1 tiles?

There are a number of sets (e.g., the Farnsworth House and the Parisian Restaurant) that use a field of 1x1 tiles to represent a tiled floor. I have found aligning these pieces such that they are all ...
0
votes
1answer
78 views

1998 World Cup limited edition soccer figure

I bought a limited edition World Cup soccer figure in Paris during the games in 1998, #3005. It does not have the shell logo on the package -but does say limited edition on the right lower corner. ...
1
vote
1answer
88 views

Can I download ldraw instructions from Lego Digital Designer?

Can I download ldraw instructions from Lego Digital Designer? Is there a collection of simple examples for my youngsters. I was thinking of: houses, small animals, simple airplane, simple car, tree, ...

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