2
votes
2answers
996 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
109 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
56 views

Identify sets from box of assembled parts

I have quite a few models: a gas station, airports, police station, and a lot more including a battery powered cart. They are all built on gray road baseplates. I also have trees, benches, people, ...
2
votes
1answer
61 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
96 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
86 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
60 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
88 views

Eneloop NiMh batteries not powering 42030 loader

Is it because the batteries are only 1.2V? It works fine with Duracell alkaline batteries. Thanks in advance.
2
votes
1answer
103 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
51 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
104 views

How to fix the Gyro

Currently the gyro sensor connected to the EV3 brick doesn't really work. whenever the gyro is attempted to be used the robot will just sit and spin once it gets to where it needs to use the gyro. Any ...
2
votes
1answer
93 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
219 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
209 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
93 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
74 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
810 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
242 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
470 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
146 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
109 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
135 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
103 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
212 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 ...
2
votes
1answer
159 views

Tufts MAZE LabView Program Will Not Run on EV3

Through the 2012 LabVIEW for LEGO software package, I found an example of a maze from Tufts. I cannot get it to run on an EV3. It appears to just constantly execute the initialization. How can I ...
2
votes
1answer
114 views

Lego RCX hardware schematic

Where can I find the hardware schematic for the Lego RCX brick? I spend a lot of time but unfortunately didn't find any useful information.
2
votes
3answers
1k views

Programming NXT color sensor with NXC?

Currently I am working Lego robot that solves 2x2x2 Rubik's cube. I am programming Lego Mindstorms NXT 2.0 color sensor in BricxCC. I already have RGB data with the command ReadSensorColorRaw. I ...
2
votes
1answer
261 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 ...
2
votes
1answer
344 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, ....
2
votes
1answer
69 views

Connect 39k3 powerpack to 417j3 motor

I'm new to lego. Trying to connect the powerpack 39k3 from 42009 Crane to a 417j3 motor. Is a 8528 Converter Cables for Mindstorms NXT the right cable? Is there a way to hack a phone connector ...
2
votes
1answer
67 views

Microsoft Robotics Developer Studio & RCX Support?

What is the last version of the Microsoft Robotics Developer Studio that supports the RCX? The Wikipedia link (http://en.wikipedia.org/wiki/Microsoft_Robotics_Developer_Studio) indicates RCX was ...
2
votes
1answer
194 views

Lego RCX 1.0 problem with communication

I have a problem with communication between the tower (it's installed and it's working - green light when communicating by IR ) and a RCX 1.0. It's not downloading .lgo file. I've tried with few ...
2
votes
1answer
2k views

How to fit lego power function LED lights onto cargo train (set: 60052)

can anyone out there explain / illustrate how to fit lego power function white LED lights on the blue cargo train (set number 60052)? We have assembled the engine but I cannot see where or how these ...
2
votes
1answer
77 views

Ringing bell DUPLO [duplicate]

It's a yellow curved piece, (like the eye piece), with a red button on top that rings like a bell. My kids had this growing up in the 80's. Any info on what this piece is called or where to get one ...
2
votes
1answer
495 views

The program downloaded from the education ev3 programming software has a error “VM program validation”

I cannot run the program from the ev3 software.It only shows "VM program validiation" How do I stop this from happening?
2
votes
1answer
219 views

How to connect chain links to the axle

In my project I want append two 21 chain links to the axle 12. Is this any axle connector with knob ending?
2
votes
1answer
448 views

Trying to get a modified traffic signal challenge worked out

The challenge is for a robot to go around the perimeter of a rectangular field and execute 90 degree turns when it gets within 4.5 inches of a wall. Simultaneously, if the bot encounters a red flag, ...
2
votes
1answer
290 views

Lego EV3 doesn't respond to direct command

I tried to execute command (via bt) play tone: play_tone = '\x0F\x00\x00\x00\x80\x00\x00\x94\x01\x81\x02\x82\xE8\x03\x82\xE8\x03' # send commands to EV3 via bluetooth with open('/dev/tty.EV3-...
2
votes
1answer
144 views

How make robot turning going straight?

I have been struggling with this function for a while. I want my robot to turn left until it detects black then turn right until it hits black again. Then, I will divide the angle in half and call ...
2
votes
1answer
82 views

NXT shuts down USB on Mac after connecting motors

After successfully connecting our NXT to my Macbook Air and upgrading firmware to 1.31 we built our first robot. We plugged in the motors to ports A, B & C and now we get an Error stating that USB ...
2
votes
1answer
139 views

What part can I use to get the connection

This is what I have.. Would like to connect the long "thing" to the square base.. not sure which part will give me a angled elevation In case you are wondering what I am trying to do.. this is what ...
2
votes
1answer
757 views

EV3 Block problems?

I don't see what is wrong with the way i made my program. It looks like this. The idea is that in the while loop [01] shall the robot move forward until it see something brown. If it see ...
2
votes
1answer
572 views

Use iPhone camera as an input sensor for EV3

As EV3 has Bluetooth builtin as well as iPhone too, is there a way to connect them somehow so that iPhone could send data from the camera via Bluetooth to an EV3 brick? As a more general question, ...
2
votes
2answers
660 views

Types of instruction manuals

I noticed there are 4 different types of instruction manuals (at least for large sets): Type I: Similar piece colors are not very distinguishable (especially Dark Gray and Black). Some building ...
2
votes
1answer
323 views

NXT program not running

We have multiple NXT Bricks. We can read sensor data and motor degrees from View. Some are running FW 1.31, others FW 1.28. When we try a simple 5-step NXT program, the motors will not turn. We tries ...
2
votes
1answer
6k views

How do I get instructions to fully motorize Technic 42006

I have just purchased the Technic 42006 and would like to make it fully remote controlled.
2
votes
2answers
266 views

Is the NXT forward compatible with EV3 sensors and motors?

Is it possible to use EV3 sensors and motors with the NXT intelligent brick? I've read that the EV3 is backward compatible with NXT motors and sensors, but does vice versa work as well? Is the NXT ...
2
votes
1answer
281 views

What's the sight of the ultrasonic sensor according to the distance of the object?

Hey I'm programming a sumobot for a first-year university Civil Engineering project. We should need the sight of the ultrasonic sensor according tot the distance of an object. For example, the sensor ...

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