1
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1answer
102 views

Sizesorting machine

I am quite new to LEGO Mindstorms, and can't seem to wrap my head around this one. I am making a size sorting machine, sorting brick sizes depending on the time they take to pass the lightsensor. So ...
1
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1answer
73 views

EV3 ide flickering

I'm using the Mindstorms IDE for EV3 on OSX. Everytime I'm moving the cursor the screen starts to flicker. See https://www.youtube.com/watch?v=q3JkonowmD0&feature=youtu.be . Any ideas what's ...
1
vote
1answer
82 views

Is there a way to buy a customized minifig?

I have a design I want to replicate into a minifig. I also want to add additional accessories to it (i.e. a calculator and glass beaker). Is there a place I can order online to get this done? Is there ...
1
vote
1answer
107 views

“file error!” appears on nxt why?

I tried to upload this program to my NXT, but for some reason I am not able to run it properly as it terminated with the message file error!. No idea why. I am trying to read a .txt file into a char ...
1
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1answer
131 views

I have a series 14 Sasquatch (Square Foot) missing facial paint, is it normal?

Hi I have the camera holding Sasquatch but he does not have the black eyebrows and muzzle. The eyes and teeth are there but the rest is just brown.
1
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1answer
183 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 ...
1
vote
1answer
141 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 ...
1
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1answer
162 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 ...
1
vote
1answer
89 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 ...
1
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2answers
45 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
93 views

Which set includes a large white mask

I bought a sealed bag at Goodwill but It did not include any information on what set it is from. Pieces look like large white body plates, skeletal/Stormtrooper mask and tusks.
1
vote
1answer
198 views

Where can I get a large number of LEGO bricks cheap? [duplicate]

Yes, I see other people's amazing MOC's all the time, and think, "man, I could totally do that if I had enough bricks." The problem is, I don't really know where to look for a whole bunch of LEGO ...
1
vote
2answers
91 views

Which program do I use to program my rcx 1.0 or 1.5

I am getting an RCX and I know it is ether a 1.0 or a 1.5. Which program do I use to program my RCX?
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1answer
92 views

EV3 IR, ultrasonic senosor datasheets

I want to connect EV3 IR and ultrasonic sensors to my Arduino. Unfortunately could not find any good documents describing how to use/control them. Could you please help? Thank you very much.
1
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1answer
116 views

How to enter wifi-password on ev3dev?

After successfully installing ev3dev and getting the USB connection working I now want to get my wifi-dongle working (or rather connecting). The dongle is successfully found and my LAN is displayed. ...
1
vote
1answer
80 views

How would I make a decal for a 2x2 dome brick or a 2x2 round slope brick?

I am looking to make a decal for a custom droid using either the R5-series head or the regular dome R2/R3/R6/R7/R8 head. However, I do not know the process for creating droids. Does anybody know how?
1
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1answer
49 views

What does 191767 mean in “Paper, Cardboard for Set 4336 #1, Scala Cat (191767)”

In BL http://www.bricklink.com/catalogItem.asp?P=4336cdb01 This cardboard's name is "Paper, Cardboard for Set 4336 #1, Scala Cat (191767)" What does "(191767)" mean here in the description?
1
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1answer
222 views

Mindstorm EV3 no longer recognises SD card

I followed the instructions to install leJOS on an SD card, to get Java support for the Mindstorms EV3 brio. The brick detected the leJOS files and processed the whole installation procedure ...
1
vote
1answer
1k views

Programming EV3 with NXC

I'm trying to run NXC programs (all run well on NXT) but when trying run it on EV3 I find an error. The download from computer to EV3, runs well but trying to run the program with RUN EV3, I have an ...
1
vote
1answer
120 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 ...
1
vote
1answer
67 views

Not detecting motor port D

We are trying to program in LabVIEW, using all 4 motor ports. On the port selector, port D is not even showing up.
1
vote
1answer
360 views

Dimensions for EV3pieces

I need to know the dimensions of the EV3 pieces for a school project (in mm). Does anyone know?
1
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1answer
182 views

Trouble with Commander app: Using buttons to control motors

I'm having trouble with the Commander app for Android. I've put an EV3 into set 8448. I'm using one of the large motors for propulsion and a medium motor for rack and pinion steering. I don't have the ...
1
vote
1answer
269 views

Lego EV3 - sending direct commands over RFCOMM Channel (Objective-C, Xcode)

I successfully open RFCOMM Channel to Lego EV3 brick with code: IOBluetoothDevice *device = [IOBluetoothDevice deviceWithAddressString:@"xxxxxxxxxxxx"]; IOBluetoothRFCOMMChannel *rfCommChannel; ...
1
vote
1answer
133 views

Is it possible to use a LEGO NXT ultrasonic sensor for a LEGO train crossing?

I was looking at LEGO NXT components, and I found the ultrasonic sensor. I was wondering that if I put off to the side of the track, the nose of my train would activate the sensor, thus operating the ...
1
vote
1answer
396 views

Why I get this “message unable to compile some documents for deployment ev3”?

I have a LEGO Mindstorms EV3 program that I was working on for a long time but recently and suddenly when I try to download the program the software displays the following message: "unable to ...
1
vote
1answer
466 views

EV3 bluetooth controller for mac

Is there a suitable EV3 controller for mac? It should be a compatible alternative from the official EV3 controller in the iOS app store or google play.
1
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2answers
662 views

How to install NXT Firmware 1.28?

Lego is giving 1.31 from their website but I need 1.28, how can I install it?
1
vote
1answer
82 views

How can I make product suggestions to TLG?

I'm sure lots of is have had ideas for products, parts, sets, themes or services that we'd like LEGO to produce. What are the best ways of proposing them to TLG, and of persuading them to take on our ...
1
vote
1answer
143 views

Link 1 x 6 with Stoppers Part 2739b

Will Link 1 X 6 connect to Liftarm 2 Axle Holes and Pin / Crank (Part 33299)? The Link will be attached to a coke can, that needs to drive a crankshaft. 2739b from Peeron 33299 from Peeron
1
vote
2answers
245 views

Robot that searches for lights

I use Lego Mindstorms NXT 2.0. I want to schedule my robot to move to where there is light αnd then when it finds it (a large amount of light, for example 80%) to stop and move another motor for 30 ...
1
vote
1answer
376 views

Programming with Lego Mindstorms EV3

I know this question was asked in the past, but I want an up-to-date answer. What is the best way to program with the NXT with a oriented object programming language? Ideally C#, C++ or Java (maybe ...
1
vote
1answer
172 views

Can Mindstorms EV3 communicate using protocol 802.15.4?

My aim is to make the robot communicate using protocol 802.15.4 through a USB dongle 802.15.4 over 6LoWPAN. The robot has to be able to get information from TelosB. I wonder whether this possibility ...
1
vote
1answer
196 views

How do I Build a LEGO Digestive System? [closed]

Does anybody have any clue on how to build a LEGO digestive system or where to start as I think it could be a good way of helping my son with a science project? Either building plans, instructions, ...
1
vote
1answer
311 views

EV3 Event Delegation

My problem is that the robot, which should just remain in the program until the Escape Button is pressed, just stays in the while-loop. The current code looks like this: using System; using ...
1
vote
1answer
664 views

“The type or namespace name ”Brick“ could not be found” Xamarin Studio with MonoBrick

I managed to establish a wifi connection with the Ev3 Brick via WinSCD and am programming the Ev3 with XamarinStudio/Mono Develop(http://xamarin.com/studio "XamarinStudio"). My problem is that "The ...
1
vote
1answer
625 views

Price of EV3 education software

After looking around on the Lego Education website, I failed to find the price of the education software. I currently have the retail version of the software, but I want the extra features and blocks ...
1
vote
1answer
344 views

ERROR CODE 7- Cannot download needed file for the program

I am kind of new in LEGO MINDSTORMS, I tried to download a program to the NXT robot and got the Error code 7- "Cannot download needed file for the program" - can someone tell me what should i do?
1
vote
1answer
269 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 ...
1
vote
1answer
2k views

Getting the IR Tower working with RCX and RobotC [duplicate]

Possible Duplicate: Lego Mindstorms RCX RIS 2.0 IR tower Windows 7 / Windows XP driver Trying to get RobotC to work with my old RCX 2.0. I'm running windows 7 64 bit. I've connected the IR ...
1
vote
0answers
4 views

Can someone please help me identify this antenna/rod part? It attaches to the bottom of a brick

These red antenna-like pieces have four flanges at the base. The base does NOT fit on top of a stud, but rather it will fit the underside/bottom side of brick. The two pieces can also be connected ...
1
vote
2answers
45 views

Made a big program in EV3's programming software for AI creation and it went from slow to not loading

Made a big program in EV3's programming software for AI creation and it went from slow to not loading. It just displays the loading bar in the middle of the page. Even my lenovo windows 10 8GB RAM ...
1
vote
0answers
26 views

HiTechnic Color Sensor analog

HiTechnic sales support said that HiTechnic color sensor hasn't been manifactured yet. Currently it's out of stock in HiTechnic shop. Is there any analog of this sensor except NXT/EV3 color sensors?
1
vote
0answers
37 views

Infrared sensor behavior

I'm developing a small program with the LEGO's Ev3 development tool. I'm trying to make the robot rotate, 30° at time, and check if the infrared sensor detect something than make something and stop. ...
1
vote
0answers
39 views

Is there an alternative replacement motor piece for 4.5 V Trains?

Is it possible to find on a market a simple 4.5V electric motor, that can be installed into LEGO Part 564c01? The service pack No. 5000 is more and more difficult to find.
1
vote
1answer
37 views

Where to get additional part library graphics for BlueBrick layout designer

I love BlueBrick, the track and layout designer from developer Alban Nanty. I have been using it for years and it is the best tool I have found for designing a full layout including train tracks. ...
1
vote
1answer
35 views

Can I change the spec of a MyBlock [duplicate]

If I create my own block (MyBlock) with one param and later discover that I should have used 2 params or different icon or something like that, what do I do? Is it possible to change the existing ...
1
vote
1answer
69 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 ...
1
vote
0answers
29 views

Mindstorm RIS 2.0 installation on Windows 10 [duplicate]

I recently bought a RIS 2.0 but was unable to install the program onto my laptop running Windows 10 (now). I tried it on my office computer running Windows 7 and the installation was successful. The ...
1
vote
0answers
55 views

Chicago Blackhawks logo Lego building instructions

Does anyone have the building instructions for the Chicago Blackhawks logo that's made out of Legos ? Please help me, I'm trying to find so I can build it for my sick brother.

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