Questions tagged [electronics]

Electronics are the branch of physics and technology concerned with the design of circuits using transistors and microchips, and with the behavior and movement of electrons in a semiconductor, conductor, vacuum, or gas.

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5
votes
1answer
138 views

How could I provide power and/or data coupling between train cars?

I'm trying to find a way to create a power/data coupling between train cars that can be connected/disconnected like the car coupling magnets. Has anyone done anything like this? Background: This is ...
7
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2answers
3k views

Custom Power Functions plug design

I'm considering the possibility of making my own Power Functions-compatible sockets for a project. I'm designing a module board for a single-board-computer with motor drivers and would like to encase ...
3
votes
1answer
109 views

Does the Mindstorms RCX Input Ports have a Pull-Down Resistor?

Sorry for the strange question. I was wondering if anyone knew anything about the internals of the RCX mindstorms brick. Specifically, does it have a pull-down resistor (if no sensor is connected, ...
7
votes
1answer
641 views

Where can I get replacement cables of this kind?

What I'm looking for: This is a 4,5V cable which is part of an old set I once had. I don't have any parts number, but I know this comes in different lengths. Google told me about bricklink.com and I'...
61
votes
4answers
9k views

Is it possible to build simple logic gates with LEGO mechanics?

I built a simple bitshifter in Minecraft yesterday. I wondered if something like this could be built with LEGO? Maybe there is a possibility to build gates with rubber bands and those movable ...
1
vote
2answers
110 views

Conductive “App Brick” without human contact

This may not be entirely LEGO-related, but more related to touch screen technology. I'd like the LEGO app brick (http://brickset.com/sets/containing-part-6103777) to register a touch on a touch ...
10
votes
2answers
5k views

Homemade methods for interfacing a Servo with LEGO bricks

I'm looking for non-destructive way to structurally attach a standard servo with LEGO bricks. I'm interested in answers for either Large, Medium or Small size servos. I'm using LEGO Mindstorm/...

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