2
votes
1answer
133 views

Using motors to ring a bell?

I would like to create a motor set up so I can use it to ring a bell inside a small tower. Since I haven't used any of the current LEGO motors was wondering what the group would suggest. which ...
2
votes
0answers
96 views

NXT shuts down in 5 minutes

I have an NXT brick that will always shut down after 5 minutes. No, it is not the sleep timer. Documentation from the NXT Hardware SDK, page 17, states that if the ARM7 processor does not send back ...
3
votes
0answers
66 views

Communication between two Ev-3 bricks

How the communication between two Ev-3 bricks is done over Bluetooth? What is the nature of data that can be communicated?
3
votes
1answer
258 views

Strongest Lego beam

In the Lego house episode of James May's Toy Stories, the engineers built the beams with studs facing upwards: around 9.5 mins into http://youtube.com/watch?v=mEFPhXl3QQY How much stronger would it ...
4
votes
1answer
160 views

Does anyone make a self-driving car?

Mapping and localization are the hottest trend in robotics today. And what is the most exciting is they can be both implemented on a low-cost robotics kit like LEGO Mindstorms! I tried to make a ...
6
votes
2answers
188 views

Which “Real World” Company was the first to have its' name featured in an actual (numbered) Lego set?

Excluding the Lego company, which "Real World" Company was the first to have its' name featured in an actual Lego set?
2
votes
2answers
586 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 ...
3
votes
2answers
191 views

What is the difference between 8T gears “Type 1” (3647) and “Type 2” (10928)?

On Bricklink I can see that there are two types of 8-toothed gear - a "Type 1" (3647) and a "Type 2" (10928). It's obvious these parts are not the same, but what is the functional difference ...
0
votes
1answer
68 views

Where can I buy replacement stickers for the set 8018? [duplicate]

I need replacement stickers for set 8018. I've bought a used set and I'd like to change around the sticker position.
5
votes
1answer
360 views

What are the torque limits of gears?

I am using Lego in the classroom to introduce students to geared machines. As part of this I am asking them to design a winch, using a small 1.5V DC motor and a collection of the common Lego gears, ...
3
votes
2answers
495 views

Unable to connect to NXT using NeXTTool via USB cable

For reasons beyond me, the NXC program MotorControl22.rxe in my NXT has disapeared. So i thought I'd just download it from my computer over to the NXT using NeXTTool. This is where the trouble ...
2
votes
1answer
72 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?
5
votes
2answers
1k views

Is there any way to buy specific duplo blocks from Lego (pick-a-brick style and/or in bulk)?

I'm brand new to this site, so please bear with me... I've used the search function with no luck, trying to find similar questions that have already been asked, and I've skimmed all the ...
4
votes
1answer
544 views

Can I buy an add on educational kit for my retail EV3?

We ordered the retail version of Lego EV3, and my son loves it and wants to do more. Are there any add on kits we can buy to expand upon what we have, ie add on motors or special tech pieces, or an ...
5
votes
1answer
239 views

Is it safe to try different firmwares on EV3?

I have prepared a SD card to run Lejos on EV3, as said on Lejos Sourceforge page and I'm about to test it. What worries me - will I still be able to go back to original Firmware if something goes ...
4
votes
1answer
210 views

How to build a car that stops at a certain distance?

I want to build a small car that is about 200 grams. I want it to run the following course and stop at exactly or about the the finish line. I can't use any controlling devices or electronics. I've ...
4
votes
1answer
283 views

Where to find older sets (eg. Classic Space)?

Can people share their experiences on how they locate older sets? Have you had luck with flea markets, garage sales, thrift stores, etc.? Or is everything done through eBay and BrickLink? Any comments ...
5
votes
1answer
165 views

How to use NXT device as a keyboard key for computer

Is there any way for me to set up my Mindstorms robot so that when I push one of the touch sensors it sends a signal to the computer to press a key?
3
votes
1answer
1k views

How do I update my NXT firmware using EV3 software

The new EV3 software tells me to update my firmware on the NXT. When I go to the tools menu and select update firmware it tells me the NXT brick can not support this function.
9
votes
2answers
469 views

How do you construct odd-angles on buildings

I was thinking of building a model of the famous Castillo de San Marco located in Saint Augustine, Florida. A small bit of research shows that Legoland has a replica (flickr link) and that there are ...
4
votes
1answer
443 views

Can I change the Bluetooth identifier for an EV3 brick?

I'm coaching a number of FIRST Lego League teams and wish to set up our lab so that each computer could potentially be paired with each brick, but I want to uniquely identify the bricks (EV3-Team1, ...
4
votes
4answers
318 views

Can anyone identify this piece for me?

It seems like this piece would be named "Octagonal Dish 2 x 2" but I can't seem to find it on any of the usual sites. Is this named something else or is it not a real LEGO element?
2
votes
1answer
182 views

LEGO stormtrooper variation

I found several LEGO stormtroopers on a toy box. They each have a plain yellow head and the words "LEGO 2002" in big letters in their backs. Did they come from a set?
3
votes
2answers
99 views

Is it possible to shrink down a wheel?

I have a tire 6581 which is stretched to the point it doesn't fit perfectly with the balloon designated for it, at one place it is kinda popped out. It is caused by my stretching it when I was younger ...
3
votes
1answer
143 views

Part assortments for creative building

I've been shifting away from collecting sets to doing more MOC building. I also recently moved and I'd like to reduce the overall size of my LEGO collection. I'm trying to decide which parts I'd like ...
1
vote
1answer
134 views

Accidently Deleted System files on Nxt 2.0. How to restore system files? [duplicate]

I have accidentally deleted the system files from my NXT 2.0. It is making a continuous clicking sound. How to I restore system files. I have the system files, but my computer can't detect it! Please ...
2
votes
1answer
194 views

How long does official Lego monorail track last?

Given the high cost of official Lego monorail track, I was wondering how long it tends to last/if there are any maintenance tips or tricks? I'm planning on using power functions to reduce the ...
1
vote
1answer
201 views

Pull back motor 552 x2

I have these wheels and want to find a set/booklet where it is used. No combination of the numbers give any result. It says Lego Group 2011 522 x2 Found it
7
votes
2answers
1k views

Is there a way to glue already built sets?

My son who is now 16 no longer plays with his Lego sets. He would like to preserve some of his larger sets like Jabba the Hutts sail barge. Is there anything we can spray or paint on to hold them ...
4
votes
2answers
241 views

Technique for multifacteted roof without 3049

I'm working on a project with a fairly complex roof in Dark Bley. In many areas, it seems to be necessary to use part 3049: Unfortunately, this part doesn't appear to have ever been released in ...
5
votes
2answers
243 views

Are those bowls genuine LEGO pieces?

I've been sieving through my video collection and came across a video from 2011. It's part of a series of Ninjago videos giving you tips on fun things you could do with the Spinners. At the end of the ...
6
votes
2answers
646 views

How to repair cracked/peeling decals?

Does anyone have any ideas on how to repair and protect cracked/peeling decals, like these pictured in my 10019 set: Some kind of film or lacquer?
3
votes
1answer
220 views

How to store large amounts of bigger bricks?

I am aware of this question and of this post blog on Evil Mad Scientist which include a couple of interesting. My issue with the first one is that it is completely unsuitable for larger amounts of ...
1
vote
1answer
275 views

Is this piece some kind of rare/modified 200?

I have this piece which vaguely resembles 200, Technic Rack Winder Axle (Rebricked) but one end is different. It is 5 studs long, axle is 1 stud long, the gear lies between 3rd and 4th stud and the ...
0
votes
1answer
146 views

Is (C) engraved on a piece an indication that it is Cobi brick?

I know that Lego prints their logo on almost all of their bricks, but some are not given this privilege. I have a couple of pieces, 3x3 in a shape of 2 fingered foot, two pin holes on front corners ...
5
votes
2answers
2k views

How can you estimate the value of a LEGO collection?

I might get a chance to buy a big LEGO collection of an old colleague of mine, but before I even come out with this suggestion I'd like to know, more or less, how much it should be worth? The last ...
2
votes
1answer
737 views

Naming a program in EV3 software?

I have figured out how name a project but cannot figure out how to rename a program.
2
votes
2answers
509 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
12k views

EV3 additional build instructions - PDF download or print possible?

The EV3 retail edition comes with printed instructions to build only one of the possible robots and it appears you have to use the software to view the build instructions of the other models. My ...
2
votes
1answer
221 views

How to efficiently identify bricks and their names? [duplicate]

I've found http://rebrickable.com/myparts linked in one of the answers here on this site and I'd like to list all of the parts I have at home (probably a thousand or two). The problem is, there is a ...
3
votes
0answers
45 views

Accessing ARM Processor Memory Registers through NXC

Specific to the NXC (Not eXactly C) programming language. Is it possible to access the memory registers on the ARM AT91SAM7S256 processor? I'm trying to investigate the use of Timer Interrupts to ...
4
votes
2answers
3k views

Compatibility EV3 software with NXT brick - known limits?

Lego says I can I use the new software to program old NXT bricks: Q: Is EV3 backwards compatible with NXT hardware? A: Yes. You can program your NXT intelligent brick using the new EV3 ...
10
votes
7answers
1k views

My poor minifig's head is stuck in his helmet!

Recently I made a LEGO race car with a driver who wore a helmet. Unfortunately, after the race, I tried to take off his helmet and his head came off inside the helmet. Any suggestions about getting it ...
0
votes
0answers
45 views

How tall is a standard LEGO minifigure? [duplicate]

Sometimes I build towns of LEGO buildings, and occasionally the minifigures will get stuck in a low roof or underhang (pun intended). Does anyone know the height of a standard LEGO person in bricks as ...
3
votes
1answer
465 views

What are the inspirational resources for building with Duplo?

I am interested in knowing what are the inspirational resources for building with Duplo, so I can spend more quality time with them. For example have Lego ever released Duplo building instructions ...
1
vote
2answers
2k views

How to use Power Functions with Mindstorms EV3?

Having learned that Mindstorms EV3 doesn't work directly with Power Functions, Q: Can you use Power Functions motors with the EV3 programmable brick? A: No, the connector does not match. I ...
0
votes
1answer
175 views

Where can I buy big quantity of the same block? [duplicate]

I have a decoration project and for that I need almost 10.000 2x4 blocks (same color or not according what I would find). Do you know how/where I can buy such a quantity ? News or 2d hand... I do not ...
2
votes
1answer
146 views

Will learning about EV3 transfer to Lego RCX software/hardware?

If I attend a workshop on EV3 will that knowledge help me get up and running with RCX software and Lego Mindstorm kits we already have at our school? I know EV3 is backwards compatible with NXT but ...
5
votes
1answer
243 views

Will using a bright LED to light my MOC harm my LEGO?

I'm building a LEGO model and planning on lighting it with a bank of 5 battery operated LEDs. I know sunlight negatively affects several LEGO colors. Will a bright LED harm the elements in my MOC the ...
4
votes
1answer
183 views

Does anyone know why Hagrid has fingers?

Hagrid (hp061 and hp009) both have fingers instead of just the traditional c-cup hands. Does anyone know why?

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