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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How does the on/off switch prevent sound from playing on the Retro Radio?
I'm aware that the Retro Radio (10334) uses a sound brick to produce sound:
This brick produces a random sound when its single button is pressed. The right dial on the radio interacts with the brick ...
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How do the 2x2 Sound Bricks work?
How is sound created by the Sound Bricks 4774c01 and 4774c02?
What is inside of them?
What electronic components are used to create this sound?
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What is inside the Technic Move hub of the set 42176 Porsche GT4 e-Performance?
What electronics are inside the new Control+ Move Hub with motors (103479c01) that is used in the set 42176 Porsche GT4 e-Performance?
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What electronics are inside the Spike Essential parts?
The Spike Essential set introduces two new robotics parts; a two-port Spike hub (part 67351c01) and a 3x3 LED matrix (part 47592c01):
What electronics do they have inside? How do they compare to the ...
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How are the sounds from the Sorting Hat produced?
I've seen the Talking Sorting Hat set:
How are the sounds for this hat produced? Could it be used to produce other sounds?
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How to connect NXT brick to EV3 programming software for mac (2024) [duplicate]
I have an NXT brick (most likely from 2006 based on a newspaper clipping I found in the box) that I want to program the NXT brick with the EV3 programming software (the newer version of the EV3 app ...
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Is there any way to use electric pieces in Stud.io?
Also is the stack exchange meant for digital LEGO editors like Stud.io?
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Type of Battery connector of Spike Prime & essential Hub
What is the type of the 3-pin connector used to connect the Spike Prime Hub or Spike Essential Hub to the rechargeable battery? It consists of 3 pins and has a male and a female side.
I have issues in ...
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Electronic inside Spike Ultrasonic Sensor 45604
What is inside the Spike Ultrasonic Sensor 45604?
Pictures of Top&Bottom PCB-Assembly would be helpful.
PoweredUp Cable and Connector use 6-Pin, but why is there used 8-Pin connector inside "...
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Does LEGO make a electronically controlled pneumatic valve bank?
I've decided to try my hand at building a working LEGO Concrete Block Making Machine, as shown in this picture:
with the idea being that the machine will be controlled by both manual and automatic ...
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How to fix torn EV3 LCD Cable [duplicate]
I accidentally tore my lego EV3's LCD ribbon cable while opening it.
I found this post of someone a while back having the same issue, however as my tear is smaller I was wondering if it was possible ...
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LEGO Studios Movie Maker Camera (1349) (2000)
A few months back I had purchased the LEGO Studios Movie Maker Set (1349) and have been tampering with it, specifically the camera, to see if I can get it to work on my Windows 11 laptop. Was able to ...
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What electronics are inside the SPIKE 3x3 LED Matrix?
What is inside the LEGO 3x3 Color Light Matrix 45608?
Pictures of the assembled Top- & Bottom- PCB would be helpful.
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Which alternative electric connector is compatible with 12V plugs?
Which alternative commercial off-the-shelf electric connector matches with the LEGO 12V connector?
Are there for example mini-banana-plugs which match with the LEGO standard?
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white-coloured light brick for the iron man sets
I've recently built the Marvel Iron Man Figure (76206) which comes with a light brick to power the 'arc reactor' in the set
I find it problematic that the light brick lights up orange, rather than ...
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Recommendation on how to build a "brick presence detector"?
I want to build a model of a complex machine with Lego and Arduino or a Raspberry. The machine model also features several accessories that can be added or removed during operation of the machine ...
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What is the carbon footprint of running a Spike Prime robot? [closed]
We are trying to calculate how much carbon is emitted from running a Spike Prime robot off one charge (roughly 8-10 hours)?
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Fixing a LEGO M Motor connector
I have several broken "Powered Up" M motors and I took one apart to see what was wrong. I ended up snipping off a section of the wire and re-soldering it back together but testing with an ...
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Problems with the main rotor speed in Airbus H175 (42145) set?
I'm having problems with the main rotor in "slow" position. The speed stays the same no matter what position the joystick is in. On the other hand, in "fast" position the blades ...
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Where can I get replacement battery connectors for old Lego Duplo Train?
I have the same Duplo Train that Pieterjan posted a picture and video of in September ('Old Lego duplo train not working on batteries'). In my case, it is clear that the battery connectors are ...
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Is there any good comparison of Lego Electric systems? [duplicate]
Coming back to Lego after a 20 year break gave me headache when discovering the electric systems available. Is there a good comparison around or could we make one here? What connector fits, what ...
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Transformer 45517: power supply or charger?
I would like to build a charging station for EV3 with rechargeable battery (45501).
Does the transformer (45517) give a simple stable dc voltage (power supply)? Or does it provide a controlled voltage ...
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What electronics are inside the SPIKE Prime angular motors?
Is there any information available about the internals of the SPIKE Prime and Robot Inventor angular motors?
What Hall-Sensor is used by the SPIKE motors?
To be more precise: I'd like to get ...
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What is inside the LEGO Powered Up L motor?
What's inside the Powered Up L motor (part bb0959c01)?
How do its internals compare to the XL motor and the M motor?
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EV3 not recognizing resistance correctly (MicroPython)
I recently tried measuring the resistance of a thermistor using the .resistance() method, the results are sadly not accurate. I measured the resistance with a multimeter and it showed 100kΩ, while the ...
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Continuous power supply for the SPIKE Prime or Robot Inventor hubs?
The hubs present in the Mindstorms Robot Inventor or SPIKE Prime sets have 2100mAh lithium-ion batteries which can be charged with the accompanied cable with a micro USB connector on one end and a ...
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Can an EV3 power a buggy motor with the NXT to 9V extension cable?
On Philo's motor comparison webpage, https://www.philohome.com/motors/motorcomp.htm, it says that the buggy motor (42908 lego id, 5292 bricklink id) is not recommended to be powered by an RCX as the ...
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Train with two Powered Up hubs
I'm building a motorized train. The locomotive has two Powered Up train motors, one at each end. However, no matter where I place the hub inside the locomotive, the wires on the train motors are too ...
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How to increase the voltage supplying to technic motor through the Technic hub?
I have four Technic Large Motors, all connected to a technic hub. I am using the motor to turn some large propellers and the hub is powered by six 1.5 V (maybe less) batteries depending on the brand. ...
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What is the max current for the EV3 I/O port's VCC pin (pin 4)?
The LEGO EV3 Hardware developer kit says that the fourth pin of input or output port provides a voltage of 5 volts but doesn't give the the maximum current that can be drawn from the pin.
What is the ...
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How does the 8365 Tuneable Racer work?
The set 8365 Tuneable Racer has tunability as its main feature, meaning the motor's parameters can be changed by adding, removing or swapping certain additional elements. However, these parts seem to ...
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How do I sync audio and movement on my NXT 2.0?
How do I sync audio and movement with my NXT 2.0? I'm building an animatronic head and I can't find a good way to sync it with external audio because the internal speaker is too quiet.
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Does LEGO sell a DC relay for Power Functions?
I’d like to use a signal from a (5V) littleBits circuit to control some (9V) Power Functions motors.
Does LEGO sell or recommend a DC relay to facilitate this sort of thing?
If the answer is no, I’d ...
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How do the Infrared Towers work?
I've seen a few Mindstorms "infrared transmission towers" listed on Brick Owl, Bricklink and other sites. However, I cannot find any good documentation that how they work, how they are used ...
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What is the maximum voltage for motors from Cybermaster units?
I recently bought a non-functioning Cybermaster unit [part:71797].
As the motors in there might be perfectly fine, I'd like to use them.
I could not find information on these motors (as opposed to ...
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What internal electronics does the Control+ Technic Hub (88012) use?
I'm interested in comparing to the other Powered Up hubs, which are already documented here:
Mindstorms v4 / spike prime What internal electronics do SPIKE Prime and Mindstorms v4 use?
train 6AAA hub ...
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Does the Mario Starter Course require a smart device?
I've seen that the Mario Starter Course (71360) requires a smart device to play:
I'm trying to limit the amount of screen time that my child consumes, and I'm wondering exactly how required the smart ...
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How to integrate hardware/embedded button with LEGO?
I have two different buttons (B3F-1000 and 3a250vac switch) which I want to integrate into a LEGO "machine" which I'm powering with an Arduino. Since the rest is integrated into LEGO plates, ...
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What internal electronics do Spike Prime and Mindstorms Robot Inventor use?
What electronics live inside the SPIKE Prime hub? How powerful is the hardware?
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What is inside the Technic Powered Up XL motor?
What components are inside the new Technic Powered Up XL motor? Is it the same as the PF XL motor, except with a different connector?
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What is inside BuWizz 2.0?
I'm interested in Buwizz PCB and components. Can someone share good photos of the Buwizz PCB (both sides)? It will be very cool to see Buwizz 2.0 but older versions will also be good.
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Use D output in 42099 (4X4 X-treme Off-Roader) set
How I can use the D output for an additional motor in the 42099 set? Or how can I use a custom control skin?
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Scarcity of electric parts: motors etc
Having bought parts in bulk several times I came to realization that electric parts are scarce resource in Lego world. The cost of plastic parts comes at around 10% of original price but there are so ...
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Problem-shooting on 8070 "Super Car" with Power Functions
I have recently bought a used Lego Technic car (8070 Supercar). It was not fully built, and from the instructions I learned that it was fully built except for approximately the last 10 steps. I ...
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Arduino-izing LEGO Technic - and now I need some ideas for the Lego Service Truck 8071
I am starting a project - Arduino-izing LEGO Technic - and now I need some ideas for a car / vehicle to choose.
This project starts out as a quest to find a way to combine the ease of LEGO Technic ...
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Can a v1 PF reciever power an XL motor and servo?
I have a v1 PF receiver but don't want to pay $35 for a v2 receiver and I was wondering if a v1 receiver can power a single XL/L motor and a servo.
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Custom extension cables for Light Stax?
Recently, I got the S-12012 Light Stax kit with 50 (!) light bricks. They are different from those described in this question, but they are much cheaper, colorful and with blinking/pulsating effects. ...
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My DUPLO railroad engine stops after 20cm
My DUPLO railroad engine stops after 20cm moving.
I suppose the sensor in the front axle is damaged.
So is it possible to repair it?
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What is a good third party battery box and receiver?
I got the LEGO 4x4 crawler for my birthday and I love it. But there is one slight thing which I hate: it has terrible range when using it outside. I know there is BuWizz which is a third party ...
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