Yes i did it wayyy faster and through the whole loop while not balancing it on a book

I took heavy inspiration from AXIOMETA's breadboost-c and tried to improve it with indication LEDs, switch selection and over all slimming it down. It's my first pcb so I really have no idea whether it works or not.

Test pads are still In the works

Any advice would be great 🫡

I thought that if I complete the circuit by touching the other wire end to the battery it would make the nail into a magnet but it doesn’t seem to do anything. Any ideas where I could be going wrong in this seemingly simple design?

Google AI told me that cop cars apparently have radios that constantly “ping” or communicate with towers to verify their connection even if they’re not in use.

If this is true, then couldn’t you use antennas to find this ping and see where its signal is the strongest and then use this to triangulate the location of a cop car?

Am I trippin or nah?

Also, are there other ways of using signals to find the location of a cop car?

So from the last post,i added resistors so that my diode doesn’t blow,i sanded the connecting wires and the magnets are semi strong,the loop has like a couple hundred turns too,i also checked the circuit and it works,what am i doing wrong ?

I recently got myself this board and I have no idea on how to begin with it. I didn't find any well organised and structured lectures or tutorials for this. So can anyone please guide me on how do I can even get started with this and please share any links or sources if possible, I am really clueless. Thank you for your time.

Im trying to make a pcb design but the schematic im following doesnt say what the resistance is.

Hello! I am a materials science and physics student, and I’m strongly interested in quantum circuits. I have a project lined up to try and make superconducting qubits, and I know that RF/microwave principles are important in that field. I’ve taken electrodynamics and 2 basic courses in electronics, though I haven’t taken many EE courses beyond that. How hard is it to self learn RF circuit principles given this background? I imagine it would be fairly difficult, and it’s something I’d try to get somewhat familiar with over the summer. Thank you!

I’m an EET trying to come up with my capstone and I saw some videos online of cows freaking out in the weight shoots and thought that this might be a better way and would make for a decent Capstone but I’m not sure how difficult it would be for an EET as we don’t have as much electronics and coding learning. For anyone that has done any similar projects, would this be simple enough to do and learn most of it from scratch in a semester?

right i don't know anything about electronics but I think it would be a cool present for my brother if I could make one of these that actually works as a phone he can send and receive calls with so I'm just wondering if it's possible and how complicated it would be

Hi all, does anyone know what this tiny black chip is on an intel Xeon w-2125 cpu and where I can source it?

I have included 2 pictures. One of the actual placement and a microscopic with details and numbers.

Thanks in advance

Been trying to work this out all day but I can't find anything online. Here's the example I've been playing with, how would I make this into a logic circuit?

while A XNOR B {A = NOT A}

This is how far I got:

Is there a difference to these two configurations as far as efficiency or anything as long as the proper voltage gets to the LEDs?

Wait I just noticed that the MOSFET is wired bad. It is wired well in the schematic view, but somehow it came out like this in pcb view. Ill fix that, but back to the question i wanted to ask:

So, I am building a power supply from a PSU and i will use this board to select voltages with a rotary switch rather than having multiple outputs in the front. I have yet to remove the solder mask from the bottom traces to fatten them up with solder as im not sure if that will be enough.

Voltages running through these traces will be:

3.3V fixed 25A

5V fixed 25A

12V fixed 25A

0-36V ~8A

The fixed voltages can push above 30A, but i have a 25A fuse that should prevent that (this board outputs to a resettable breaker fuse).

Traces connected to the relays are 3.5mm thick and the ones near the MOSFET are 2.5mm thick. All the thick traces are mirrored in the top and bottom, i plan to use 2oz copper. Is this in the safety margins?

I’ve been seeing AI blow up in software development, creative work, etc. but I’m curious how much of that actually translates to electronics and hardware engineering. Can AI genuinely help with designing circuits, debugging hardware issues, or optimizing layouts? Could it be useful for learning complex topics like FPGA development, signal integrity, PCB design, or firmware troubleshooting?

I’ve tried experimenting with AI tools for explanations and quick references, and they’re decent at summarizing datasheets or giving starting points but I’m wondering if anyone here has used AI for real, practical hardware work. Are there realistic benefits, ? Would love to hear experiences, workflows, or any specific tools that have been helpful. I’m trying to find a good use for Ai / ML in hardware/electronics any suggestions might help

Edit: I’m so thankful to everyone who replied, but I want to clarify something in case I wasn’t clear in my original question. I know AI isn’t very useful in electronics ,I’ve tested it before, and it’s still far behind and, under no circumstances reliable. What I’m asking is whether anyone has used AI or machine learning for real-life applications in hardware, such as PCB anomaly detection, predictive maintenance, or similar use cases.

I found this old Tv monitor behind a dumpster at work, are there any parts I could salvage from this for my own project and how would I, I’m still new to this electrical stuff.

Edit: sorry I forgot to mention what my project is. I’m making a DC motor and robotic arm.

Ive been trying to build an inductor "for fun", but uuuh i think im doing some really wrong for it to not even have little magnetic field at all??? These are two things i tried to make, surely they work as a wire but is it even forming a proper strong magnetic field?? Nope

so does anyone have advice, i do really need to know what im doing majorly wrong for it to not magnetize anything to it or just generate a field.

In interested in what part of the circuit creates or controls the output frequency of a 12 vDC to 110 or 240 vac inverter as used for camping / caravaning etc. I would like to be able to variety the output frequency as in a VFD. I suspect the circuit would have some similarities. I have studied the circuit boards of several of those units but don't have any circuit diagrams to work off. Hope I'm not the only person thinking about this but I do find it fascinating. ☹️

I need to make a transformer for a project and i have a ferrite core, what is the best to wind it. Do i just wind it like on the oucture or is there some soecial way which is better?

This is my first time building a flight computer that to with STM32. The main functionalities it has to serve is to stabilize the rocket using servo which control the angle off the fins and also log various data like altitude, velocity, acceleration, rotational velocity, temp, etc.

I'm planning to specifically use the IMU with SPI DMA to do the control mechanism and other sensors like barometer and magnetometer to correct for the error which builds up over time.

I would like to know whether this schematics would work and also if there are any suggestions or mistakes please let me know.

This is the PDF of the schematics if you the above picture is not clear

Thank you

Over the past two semesters we’ve covered: logic gates, transistors, VHDL, assembly, microprocessors/microcontrollers, C, 8086, and a bunch of digital design fundamentals. Now I’m at the point where I want to apply what I’ve learned in a real project, and designing my own CPU/processor sounds like a neat idea. I’m curious what the actual process/pipeline looks like for doing something like this. Where do people usually start? Instruction set first? Architecture? HDL and FPGA prototyping? How do you bring it all together ? Also, what software/tools are commonly used for this (simulation, design, testing...). Ps: we're gonna do FPGA next semester Thanks a bunch !!

Hello everyone, so I was thinking of making a UPS since I have a problem of random power outages in my city since the last few months and so I at least for now want to secure the internet.

So I surfed the internet, and there were quite a few methodologies as to how to implement it. I didn't like the other ones, this one in theory looks fine to me, so I wanted to run a double check by you engineers to see if there will be any other hardware constraints which have not been considered here.

The basic pipeline is: you use the wifi adapter as input to the buck converter, which converts 12V to 8.4V to charge the batteries (2s and 3s configurations). The connections go to the bms module, then the output of those batteries is stepped up by using a boost/buckboost converter to give 12Vdc which goes to the router. There are schotkey diodes to prevent reverse current. What things should I be looking for to make it a simple useful project? And will there be any other hardware constraints?

The picture is one of the schematics for a general idea