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
110 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
252 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
340 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
67 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
65 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
192 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
486 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
433 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
274 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
142 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
81 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
2answers
571 views

How do can I tell if minifigures are custom-made or LEGO Originals?

I see that on Amazon you can find a lot of minifigures but I can't tell if they are cheap knock-offs or not.
2
votes
1answer
750 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
567 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
652 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
320 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
265 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
279 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 ...
2
votes
2answers
787 views

Ultrasonic sensor option missing in Wait block in Labview

I have hooked up the EV3 brick and the Ultrasonic sensor (on port 4) from the older mindstorms set 8527, and using the most recent Labview software on windows 7. I am trying to test the model for ...
2
votes
1answer
392 views

What are the memory requirements of EV3-G software blocks running on NXT bricks?

The NXT brick has about 130K memory available for user programs. With the newer firmware required for downloading EV3-G programs that memory has been reduced to 118K. How much memory is used by the ...
2
votes
1answer
886 views

How Can I paint my LEGO Bricks? [duplicate]

Possible Duplicate: How do I change the color of a brick? Is there a way that I can paint a white LEGO brick? I would prefer paints that will not come off easily.
2
votes
0answers
59 views

Lego Model to 3D Converter

I've created a LEGO figure using a great number of ball joints for maximum flexibility. The pre-finalized version of this model, before I got the legs working the way I wanted them, is shown in this ...
2
votes
1answer
100 views

How to clear off oils in a way that will not damage the plastic?

Especially with the pneumatic cylinders, so it has to not make the metal rust too. Also, it is oxidized vegetable that is stuck in there, inside the pneumatic cylinders. And it started to make it all ...
2
votes
0answers
78 views

Is there a free ImageSet of the Minifigure Series?

As I wrote an iOS App, which helps you collect the Minifigure Series, that I want to distribute for free and LEGO is not willing to let me use their Minifigure Images, I am looking for the images ...
2
votes
2answers
156 views

Inverting motor's rotation

I've designed a robot with two motors. It works as follows: The first motor is attached to the the person's arm, the second motor receives the calculated movement and moves accordingly. When the ...
2
votes
0answers
148 views

LEGO Technic Interface A

A few days ago, a friend offered me one set 9750 LEGO Technic Interface A with the Interface Card and Cable (IBM compatible) but without software. Can someone share the installation software (LEGO ...
2
votes
1answer
200 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?
2
votes
0answers
275 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 ...
2
votes
0answers
64 views

Programming the LEGO Mindstorms T-Rex [duplicate]

I followed the instructions up to the MoveAbsolute My Block for the T-rex but I'm not able to link the last connection (Brake at End). Can anyone advise what I might need to change?
2
votes
0answers
51 views

How to Return a Motor to a specific value [duplicate]

I've created an arm robot using Mindstrom NXT that can find an object pick it up and move it to an new and random location. My problem is that I would like for the motor to, at the end of the program, ...
2
votes
0answers
237 views

Daisy chaining EV3 with RobotC

I'm trying to run EV3 programs with RobotC and trying run on EV3 Daisy Chaining. I have three independent EV3 bricks labelled A,B,C. I want, according to the color reading by the color sensor on ...
2
votes
0answers
31 views

Train track switching using servo motor [duplicate]

My project requires using a servo motor for switching track. It needs to be automate switching points. Is this possible? What is the cheapest / easiest way of achieving this?
2
votes
1answer
325 views

Good EV3 iBook for programming or building

I am a participant in a Lego mind storms competition soon using EV3. I would like to know if there are good, free iBooks for me to download (PDF or iBook from the apple iBook store). Preferably the ...
2
votes
0answers
72 views

What's the most effective way to clean dusty builds? [duplicate]

I have a large airplane build that I haven't touched in quite a while, and it has built up quite a large amount of dust. I've tried using a wet washcloth to wipe off the dust, but when cleaning that ...
2
votes
0answers
49 views

How is a LEGO Friends Mini-doll built? [duplicate]

Has anyone taken apart a LEGO Friends mini-doll to see how the arms and legs connect? And are the connection points compatible with any other types of brick?
2
votes
1answer
344 views

Does NXC work with EV3? [duplicate]

Is it possible to create and run NXC programs on the EV3 brick? I installed BrixcCC, created a simple Hello World NXC program and selected "Download and Run" in the Compile menu. The EV3 brick made ...
2
votes
1answer
256 views

DeathStar maintenance [duplicate]

I have a LEGO Deathstar and have already built stage one of four. However, I haven't been able to get to it lately and it has become rather dusty. How should I clean it? And I travel a lot, so is ...
2
votes
0answers
33 views

piece information [duplicate]

I found a lego item that I can not fiugre out what it is or what set it goes with. I was hoping someone out there could give me some info on the item. I'm attaching a picture of the item in question. ...
2
votes
0answers
157 views

Is the EV3 brick balanced? [closed]

I want to buy an ev3 but I want to know if the center of gravity is off in the brick (really does not look symmetric)
2
votes
0answers
27 views

How can I control the building instructions generated in LDD? [duplicate]

Is it possible to control the building instructions in LDD? Specifically, I'd like to make sure that every step stands on its own without falling apart on my build. If not, is there any software I ...
2
votes
0answers
269 views

Ideas for large NXT projects [closed]

I currently have 6 NXT sets. Can anyone think of some large scale projects that I could attempt using most of the NXT bricks and pieces together?
2
votes
0answers
441 views

RCX 1.0 downloaded firmware successfully with RIS 2.0 but does not run any program

I have installed correctly the RIS 2.0 in an old laptop running Windows XP and I successfully downloaded the firmware through the RIS 2.0 to the RCX 1.0, following the standard setup instructions. ...
2
votes
0answers
191 views

I have entered codes for days 1-7 on the LEGO Star Wars Calendar site and now can't enter any more [closed]

I have the LEGO Star Wars Advent calendar and have put in the codes up to day 7, however it will not allow me to proceed and put in any more codes from day 8 upwards - are other people having this ...

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