2
votes
1answer
352 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
125 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
182 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
98 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
120 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
275 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
122 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
527 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
126 views

Some LEGO elements not attaching as usual

I am building a tank made of purely normal LEGO elements, which means no gears or axles or that type of stuff. I am trying to attach a 6x6 LEGO plate onto the base for support, but it is not working....
2
votes
1answer
143 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
137 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
129 views

Looking for information on a Lego manual I had as a kid

I had a lot of Lego when I was younger (late 80s/90s), and in a flash of nostalgia I recently remembered having a great instructions/ideas book which I loved to ready through - I can't remember the ...
2
votes
2answers
133 views

Is there a LEGO clamping tool?

Sometimes we cannot easily attach 2 LEGO pieces. Is there a tool to help clamp together LEGO pieces that aren't very tight? In other words, is there a tool for making a more secure connection between ...
2
votes
1answer
221 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
181 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
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?
2
votes
1answer
542 views

Any substitute / schematic for Mindstorms 2.0 IR tower?

I came across a used Robotics Invention System 2.0 set, but in addition to a few missing bricks, it is missing the IR tower. Is there any generic replacement that I can use to program the RCX or does ...
2
votes
1answer
4k views

Code for PID for EV3-g

I want to use PID for my Ev3. I used PID for NXT-G before, but I have never used EV3-G before and don't know how to get PID. Could someone please post a screen shot of the code or upload the file?
2
votes
1answer
251 views

How to use printed bricks from set 850425 into LDD?

I would like to know if it is possible to use the printed tiles (those with letters) from the 850425 set into the Lego Digital Designer (LDD)? And if it is possible, the next question is "how" of ...
2
votes
1answer
1k views

RGB sensor HOWTO use?

I've got an RGB sensor (this one with the three LED thingies) and wonder how to access it using NXC. I know I can SetSensorColorFull(IN_1); and then access it using ReadSensorColorEx or, for ...
2
votes
1answer
149 views

Trouble finding plastic storage bins for MOCs built on 48x48 stud (gray) baseplates - Ideas?

I have a number of models built on gray baseplates that are that are proving to be difficult to store/transport. Lidded plastic bins would be ideal, but I'm having a lot of trouble finding bins with ...
2
votes
1answer
330 views

What is the input to the Speed Regulator?

I wanted to buy a transformer for the speed regulator, so based on this image, I bought a transformer with 12V DC output. It works. However, discussing this with a fellow AFOL, he pointed out that ...
2
votes
3answers
9k views

How do I unlock the sunday surprise on the 2013 Star Wars Advent Calendar?

I'm trying to enter the code on the back of door number 1 into the Lego Star Wars site but it doesn't work. Does anyone know how / where to input the code?
2
votes
1answer
257 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?
2
votes
1answer
533 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 ...
2
votes
1answer
213 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 ...
2
votes
1answer
282 views

NXT Programming not working

I recently got back into NXT stuff (keep in mind I have a NXT 1.0). My screen was broken,but got that fixed. The software works,but I think the programming doesnt. I made it so If I push a button,the ...
2
votes
2answers
993 views

Can I program EV3 with the NXT-G IDE?

I am helping prepare a team for First Lego League and the new EV3 kit is what will be used. We are currently teaching the kids with NXT 2.0 kits that we have using the NXT-G IDE. It appears that we ...
2
votes
1answer
107 views

Replacement stickers [duplicate]

Can I purchase a sheet of stickers for 4643 Power Boat Transporter? My son got the item as a gift and a friend of his put the stickers on wrong and he is very upset about it.
2
votes
1answer
136 views

NXT brick erratic programming behavior

I think I have a defective NXT brick. It has been programmed to move in a direction for 1 second, wait 1 second and then move in the reverse direction for 1 second. The code downloads on another ...
2
votes
1answer
60 views

How to represent infinity in NXC?

Is there anything like Java's Float.POSITIVE_INFINITY in NXC? How else can one represent the positive infinity in NXC?
2
votes
1answer
82 views

Minifigure arms and legs do not have stamps

I have loads of minifigures from the 1980's and have just found out that none of the arms or individual legs are stamped with the LEGO logo.However, torsos, heads, and hips are all stamped. Does this ...
2
votes
2answers
75 views

EV3 screen stuck at “Starting…”

After I turn the device on, its screen is stuck at "starting..." for a long time. It hasn't change into the regular screen, and the light behind the button was still red (didn't become green). Is ...
2
votes
1answer
92 views

LEGO Friends drinking bottle (850817) containing BPA?

LEGO has recently released Friends drinking bottle 850817, but there's no mention anywhere (not on the product itself, not on the product's web page) as to whether the product contains BPA (Bisphenol),...
2
votes
1answer
59 views

How come themes like Bionicle can afford so many new parts?

LEGO is quite economical about introducing new parts in its standard sets. One reason is they need to fit in the system, but the other is that hard tooling molds for production is quite expensive. ...
2
votes
1answer
100 views

How to Motorize the LEGO Mars Rover

I am looking for some suggestions. My daughter is building the Mars Rover set (go here for the details: http://www.eurobricks.com/forum/index.php?showtopic=98222) for a presentation at school and I ...
2
votes
1answer
50 views

Controlling EV3 motors within VC++

I've got an application within some VC++ software (BCI2000). This is running on Windows 7. Although BCI2000 can run elsewhere, I'd like to stay on Windows. I've got an EV3 whose motors I'd like to ...
2
votes
1answer
90 views

Chicago Blackhawks logo Lego building instructions

Can anyone make some building instructions for the Chicago Blackhawks logo that's made out of LEGO bricks? I'm trying to find so I can build it for my sick brother.
2
votes
1answer
216 views

Sort the program list on EV3

When uploading a project to the EV3 brick, is there a way to control the sorting order of the programs on the brick? E.g: Prog_1 Prog_2 Prog_3 ... When playing a robot match in FLL one often needs ...
2
votes
1answer
199 views

Hanging template for Large Minifig Case

I've been happy to see LEGO came out with a way to display the myriad of minifigs out there: And I was also very happy to find that I can hang these on the wall with the convenient eyelets on the ...
2
votes
2answers
88 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 ...
2
votes
1answer
73 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 ...
2
votes
1answer
755 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
1answer
237 views

LEGO Mindstorms NXT - NXC compiler for OS X

I need an IDE for LEGO Mindstorms on my Mac, but I only found a few for Linux and Windows but not for Mac. I found NeXT Tools, but the newest version isn't compatible with Yosemite. If I execute it, ...
2
votes
1answer
458 views

usage of ev3 ultrasonic sensor in lejos behavior based programming

I'm using ev3 ultrasonic sensor. And I'm writing a behavior based lejos code. I want to do some tasks when the ultrasonic sensor detects an object which is not further than 30 cm's. And this is my ...
2
votes
1answer
145 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
104 views

Control two Lego NXTs with an Arduino

I'm new here and also very noob with the Arduino. I have a basic knowledge in Java and some more in C# so code isn't a problem. I can learn it easily. I have a project assigned. I would like to know ...
2
votes
1answer
127 views

Mindstorms Vision Command - what shall I do with it?

I have a Vision Command camera, bricks and book, still boxed with instructions and a W98 coaster, er I mean CD, and was about to donate it to a charity shop but it seems there's no 64 bit driver for ...
2
votes
1answer
100 views

How to Download my orders from Bricklink

I know you can log in to Bricklink and download my orders as Excel or many other formats, but I am trying to do it programmatically. Does any one know how to do this though Powershell perhaps?
2
votes
1answer
204 views

How to import an unofficial parts archive into LDraw?

I recently created a basic EV3 robot in Lego Digital Designer and exported it as a LDraw file. When I opened the LDView file, the EV3 elements were missing. I then proceeded to download an unofficial ...

15 30 50 per page