pcb

Hey Guys, I have a weird question about SmartHome door Sensors. I purchased one just to look at it and I am confused. There is the main control board and shell and then the magnet and shell. With home alarms reed switchs are used the the magnet opens or closes the switch. I was expecting the...

Hi, I'm a rising freshman at Case Western University, and I would like to make an an electronic scooter to get around campus before I move in in about two months (mid august 2023). I already have a lot of the parts I would need for the project, like motors and motor controllers, among other...

Hi Got asked by a friend to try and fix this «speaker» but for me it looks like the circuit is burned. Is that true? I also have no experience in fixing and soldering a pcb board, so should i just throw it away? Thanks for your time!

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Hello everyone, I wanted to share an idea that I have been thinking about regarding the use of GPT-4 in automating the creation of electronic components footprints and schematics for PCB design applications. As many of you know, creating footprints and schematics can be a time-consuming process...

Hi, I'm designing an ECU for our prototype. This will manage the power supplies to 2 different devices and also some data processing through a microcontroller. The image below is a basic block diagram of the system (sorry it does not look very nice). I am using a 48V power supply, which is...

Hello, sorry for my english. How can I use data analysis and statistical methods to improve my PCB circuit testing and inspection processes, and what tools or software programs are available for this purpose?

Hello, I was unmounting a pair of headphones (JBL TUNE 760NC), and when removing an ear up, I pushed too much on my knife and I think I made a dent in the PCB, as you can see on the photograph. I would like to know if this will prevent my device from working again, and if so, how to repair it...

Hello all, This box (see image below) is moving with the cursor which makes it very hard to work. What can I do to make it stationary? in the top corner for example? Regards,

Hello. I'm making a voltimeter-amperemeter using an atMEGA328P, L7805, LM358, LCD 16x2 and some other components. The problem is that even though the LCD turns on, it doesn't show the code or at least the white squares it should, and when I move the potentiometer that goes with it it doesn't...

Greetings, I have a card that I want do the design and get the gerber. I believe the connection ports on the left are RS232. On the other side of the card the connection lines are clear, what I mean is I can easily see the which line goes from where to where. But on the side that I have...

Hi, I want to build the DC2781A evaluation board by Analog Devices. Most of the passive parts I already have, so the building cost would be much cheaper for me. However, I wasn't able to find a distributor that sells the inductor of this schematic: RPT129NP-102MB by Sumida. Therefore, I'm...

I am using KiCad 6.0 for PCB drawing. I want to enlarge the drawn area I marked, is it possible to do this, and how do I do it?

I print out a negative on acetate paper, I stick it on a copper plate with dry film, and I press it with an iron. While doing these operations, we have to be in the yellow light, what is the content of this yellow light?

I've been reading about FR-4 TG-135, TG-150 and TG-170 if those codes stands for 135°C, 150°C and 170°C while operating, my doubt is, when it's time to reflow the temperature could be somewhere between 200-260°C, so does PCBs release halogen gases during reflow time? My concern it's because I...

Hello everyone, I am working on a low cost vending machine with the ESP32 and as you may know, it is necessary to properly protect the components to prevent users from trying to steal money or damage the components. The PCB has a TFT display and several multiplexers to communicate the ESP32 with...

I've bought a WiFi Smart Aroma Diffuser in repackaged condition, but as I've tried to use it, it didn't seem to work, as well a spark was visible when I tried to reconnect the power cable. I've disassembled it, and started testing the pcb, and I've noticed that the main power cables are shorted...

Hello, I'm working on a little side project for my home thermostat. I recently bought a nest smart thermostat to replace my old "dumb" thermostat and ran into an issue with the wires. I don't have enough wires to accommodate all of the thermostat functions. Running new wiring is not an option...

I have an RF Explorer to use to scan what RF's are around me. I am curious as I'm am just getting in learning about wireless transmission and propagation. However I can't explain these power levels of -10 dbm all the way to -0. The RF Explorer does seem to be working correctly just based off of...

Hi, I work for company in the UK as an electrical engineer. I have just started at my new place and they have a 3-phase pump motor controller that needs replacing. It's a Coelbo Onematic controller, working off the pressure in the water line. I have a new controller unit but don't want to wire...