0
votes
0answers
10 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?
0
votes
1answer
65 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 ...
0
votes
1answer
25 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 ...
2
votes
1answer
79 views

Will playing with a 12V train motor by hand damage it?

This question is similar to one for PF motors. The 12V motor bogie has considerably more resistance than does the newer PF bogie motor, which may be moved very easily when not operating. So, if one ...
0
votes
0answers
30 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 ...
2
votes
2answers
91 views

Is there a good way to buy molded LEGO boxes?

I'm considering some new storage options, and there are some official LEGO boxes that I'd like to use as they already fit in my existing shelving system. The following sets contain the boxes that I'd ...
0
votes
1answer
29 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)? ...
2
votes
2answers
94 views

Have Multiple Inputs to Programming Block

Originally, I had a simple program to move until the robot hit a wall, then it reversed and turned and moved again, repeated to infinity. It works by turning the motors on, waiting for input from the ...
34
votes
6answers
7k 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, ...
0
votes
0answers
30 views

Firmware problem or EV3 problem

I've gotten EV3 recently. Sometimes after I download the program it doesn't run and it's not possible to stop it, so I have to reset EV3 to update and download firmware! It occurs many times! I don't ...
2
votes
1answer
31 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 ...
8
votes
1answer
582 views

Connecting to NXT Brick via Processing over Bluetooth

I am attempting to control my NXT model via the Processing programming language rather than the provided language based on LabView. When I can establish a connection over Bluetooth, this works rather ...
3
votes
1answer
465 views

Is there a free EV3 simulator (virtual machine) for the Mac OS?

I recently saw this question on a virtual EV3 machine. From the video, I felt that this software will be great. However, I don't have the budget needed to buy a licence. Is there any alternative to ...
1
vote
1answer
262 views

Dimensions for EV3pieces

I need to know the dimensions of the EV3 pieces for a school project (in mm). Does anyone know?
0
votes
1answer
25 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 ...
3
votes
2answers
3k views

Minifigures creator?

Does a website to create custom minifigs exist? For exemple, you choose your head (between all official LEGO releases), torso, legs, and hair, and then you can purchase it for the same price as you ...
1
vote
1answer
72 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
46 views

Color Sensor/hi-tech and EV3

I want to create a line follower by EV3 using hi-tech color sensor without using switch! :( I tried some former ways but the robot cannot follow the line very well! can anyone guide me?
0
votes
2answers
182 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 ...
0
votes
0answers
48 views

What's the first block in MoveAbsolute for programming the T-Rex, in The LEGO MINDSTORMS EV3 Laboratory book? [duplicate]

On MoveAbsolute2 and 1 for The LEGO MINDSTORMS EV3 Laboratory book by Daniele Benedettelli, programming the T-Rex, I don't know what the first block is, can i please have help?
1
vote
1answer
57 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 ...
-1
votes
0answers
35 views

Email address to communicate with designer [closed]

I want to write to the designer of Mixels. My six year old son has a special message for this person. Can I get an email address?
1
vote
1answer
67 views

Using the NBR 1036 Barometer with the EV3

I just purchased the HiTechnic Barometer from LEGO, thinking the Block was available for the EV3. Theory says that I can use NXT Block in the EV3. Can anyone point me in the right direction?
2
votes
1answer
124 views

Please help me ID a (possibly star wars) lego set. Photo attached

Any help with the set this piece is associated with, would be appreciated.
0
votes
2answers
31 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
69 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
22 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?
0
votes
1answer
40 views

Batman Arkham Knight Batmobile Instructions

Where can I find a set of instructions for the Lego Batman Arkham Knight Batmobile?
0
votes
0answers
13 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 ...
1
vote
1answer
234 views

Linear Actuator of the boom of 42006 jams

I just built a 42006 excavator, and the Linear Actuator jams such that it can't be rotated. I think that the overly sharp angle of the u-joint at the top of the boom is the reason. Is there a ...
2
votes
0answers
138 views

8258 Headlight assemblies

Anyone else having a problem with with headlight assemblies on 8258 crane truck? I can't seem to fit them in due to interference from fog light bar. Thanks
3
votes
2answers
2k views

How can I transmit horizontal torque to vertical?

I have a setup where I have a step motor which I am attaching a gear onto. The motor will make the gear stand horizontal in a small vehicle. Is there any good gear combinations of LEGO gears that can ...
1
vote
1answer
95 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 ...
1
vote
0answers
15 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 ...
2
votes
1answer
352 views

Strongest LEGO structure - (2) Floor

What is the strongest LEGO box structure? I am going to build a LEGO computer case. Different from Mike Schropp and greenyouse, I am planing to build an upright case. (This is a general "strongest ...
1
vote
1answer
116 views

What is wrong with a Lego pneumatics system that won't go?

I own a LEGO Technic Unimog U-400 (part number 8110) and have been very pleased so far with the performance of its pneumatic system. However, after storing for just a month or two (after a good 5+ ...
2
votes
1answer
54 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 ...
3
votes
2answers
51 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 ...
1
vote
1answer
37 views

Making an atm With an EV3

So this is going to be long question because I want the best answers I can get. So I am building an ATM using my LEGO mind storm EV3 but I ran across a problem. The problem is that I want to be able ...
4
votes
2answers
4k views

What is LEGO Junior?

Are LEGO Junior bricks bigger than regular LEGO? I can't decide between Junior LEGO and Duplo for my son who is just over 3. I had thought the Junior sets might constitute a happy medium, but am now ...
2
votes
1answer
521 views

Mindstorms EV3 PC application won't load

Installed Mindstorms EV3 application on MS Windows 7 Home Premium v6.1 (Build 7601: Service Pack 1) and I keep getting the same error message when launching. A white window pops up with the ...
11
votes
5answers
13k views

How much does a LEGO brick weigh?

I am trying to do a science project and I need the exact weight of one of the LEGO pieces. I am using it as a counter balance on my scale. What is the weight of a 1x4 LEGO brick?
1
vote
0answers
15 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 ...
4
votes
1answer
101 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?
0
votes
0answers
19 views

COMPARING LEGO PARTS [duplicate]

My son in 5 years old. We startted with Duplo, then ı bought classic lego (from 4 to 99 years old). Classic parts are smaller than Duplo, now ı want to buy junior, my question is about sizes of junior ...
1
vote
1answer
84 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 ...
16
votes
2answers
4k views

How to minimise or remove sun-stains/fading from blocks?

In particular, I've had white blocks that have yellowed in places. Can the colour consistency be restored? Or at least improved? I'd be more interested in people's actual experiences rather than ...
0
votes
2answers
24 views

EV3 - At what time DIRECT_REPLY is sent by brick?

For example: I've sent DIRECT_COMMAND_REPLY to rotate the motor for 720 deg. When EV3 brick should send reply: before motor finished rotation (right after my command was received) or after motor ...
1
vote
1answer
42 views

EV3 Error and VM Program Instruction Break

I'm making a program which is very complex and large but it does not contain any Arrays in it. Weird thing is, last night it worked fine but today when I downloaded the exactly same thing into the EV3 ...
2
votes
3answers
214 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 ...

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