LEGO® Answers Stack Exchange
LEGO® Answers Stack Exchange

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1500 questions
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4 answers

Does the value of LEGO increase over a period of time?

I have a couple of exclusive LEGO sets such as the 50th Anniversary set, 10184 Town Plan, as well as the LEGO Harry Potter 10217 Diagon Alley set. I was wondering if these will increase in value into the future, and if certain LEGO sets increase in…
Darth Vader
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Advanced set for 5.5 years old

My son had great success building a lot of Lego models, including complex sets, such as the Family house set. And I want to meet him with an advanced model, that includes some gears and more functional. I thought about 3 models, all of them are a…
AsfK
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Is there a modern equivalent for windscreen piece 6152?

For a creation I'm building, I am using a white windscreen piece (part ID 6152). Looks like this piece was last produced in the late 1990's. Is there a modern equivalent that preserves this general shape?
Thane Brimhall
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1 answer

How did the LEGO 7862 Remote Controlled Decoupling and Signal work?

I've never seen this set in person, although it appears occasionally in 12V Lego train system images. I've never seen it used, or described. How did the LEGO 7862 Remote Controlled Decoupling and Signal 12V work? What is the 'Signal' component of…
CJBS
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Will playing with a 12V train motor by hand damage it?

This question is similar to one for PF motors. The 12V motor bogie has considerably more resistance than does the newer PF bogie motor, which may be moved very easily when not operating. So, if one pushes a 12V-motorized train by hand, will it cause…
CJBS
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Slow down the mindstorms EV3 motor so target position is not overshot

I have Debian jesse installed on a mindstorms EV3 and I'm using the ev3.lego library: https://github.com/topikachu/python-ev3 I want to be able to slow down the motor as it reaches its target destination because if it's going full speed when it gets…
Eric Leschinski
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What is NXT-G number format?

We've been following this tutorial to connect a NXT 1.0 brick to a PC via Bluetooth. We've been able to set up the communication, send and receive data in ASCII format. However, whenever we try to send an integer and use it for calculations, it…
Cristian Porto
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6
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2 answers

Have Multiple Inputs to Programming Block

Originally, I had a simple program to move until the robot hit a wall, then it reversed and turned and moved again, repeated to infinity. It works by turning the motors on, waiting for input from the touch sensor, then reversing, turning, and…
Saamoz
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3 answers

Is there a way to set a flat plane at an angle to horizontal of less than 22.5 degrees, but more than 0?

I am building an airplane with a wing dihedral (the wings angle upwards from the fuselage), but I am using parts 44302 and 44301 interlocked as designed: Unfortunately, one click up is about 22.5 degrees, and horizontal is, of course, 0 degrees.…
SSumner
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3 answers

Is there a free EV3 simulator (virtual machine) for the Mac OS?

I recently saw this question on a virtual EV3 machine. From the video, I felt that this software will be great. However, I don't have the budget needed to buy a licence. Is there any alternative to this system?
J_W
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3 answers

What kind of Lego-compatible figures are these?

Can anyone tell me about these Lego-compatible figures? They clearly aren't Lego brand, they don't look like Mega Blok figures or Tyco figures that I have seen (not that they couldn't be one of those brands potentially). They have no brand markings…
Jessica Brown
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How to control a 88004 Servo Motor with a Raspberry Pi?

I am able to control a simple servo motor such as SG90 by using pulse-width modulation. However when it comes to controlling a 88004 LEGO Servo Motor it is simply a nightmare. By using PWM all I managed was bringing it to its normal position. It…
user4343
6
votes
1 answer

Why is there no set with much RC Straight tracks?

after visiting many Lego events (brickmania, antwerpen, BE), I wish to expand 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 straight track ( #53401 ) Even if 7499 contains…
Overnuts
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6
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How can I wire up the LEGO 2838?

I would like to know how to hook up the LEGO 2838 9v motor. I understand that the Power Functions extension wire is compatible with the 9v system, but how on earth do I wire them up?
Taylor Garrett
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6
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EV3 RMIregulatedMotor Regulation Problems

I have problem with regulation of the motor when I control EV3 with Bluetooth. Here is the code: RemoteEV3 ev3 = new RemoteEV3("10.0.1.1"); ev3.setDefault(); RMIRegulatedMotor leftMotor = ev3.createRegulatedMotor("A", 'L'); …
Phav Makara
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