askelectronics

I want to change te battery setup in the camper van a bit....

I’m an EE by trade focusing on embedded devices, but most of my work is in relatively low-power STM32 applications. When I stopped following developments in hobby kits, it was mostly Arduino Unos slowly driving I2C OLED displays....

Trying to repair a Hyperkin Duke Xbox controller where the left trigger doesn’t respond. Found that the resistance of this potentiometer doesn’t change when it’s moved, so I’m looking to replace it. I’m a novice with this stuff though and I’m having trouble identifying it. Any help is appreciated.

Hi everyone!...

I’m learning about electronic components. I believe this is the part which has broken and made this heating pad unsafe to use. Well, unusable, not just unsafe lol.

Hi!...

Hi, this post is structured similarly to r/PrintedCircuitBoard 's review request format. Since we don’t have any PCB communities over here yet, I thought that this might fit in here and can maybe spark some friendly discussion....

Solution: @DJPhil has made some really insightful comments below, which are really useful. If you just want the cap you can set the parametric searches for 660uF, or in September 2023 I’ve found that digikey stock(s/ed) chemi-con EKHJ451VSN661MA59M....

Hey folks, I have a Mackie 802-VLZ4 mixer which does this narsty pop when you turn it on; I’m pretty sure it’s what killed one of the woofers in my monitors. It has been put out of service and I will either harvest its many through-hole organs or else fix it....

Since MOSFETs have a gate capacitance you’d want to limit the inrush of current from the output of a microcontroller to prevent it from getting damaged prematurely. That’s what gate resistors are usually good for....

My Google-fu has completely failed me. I’ve got an RGB addressable led curtain. It has 20 strings of 20 LEDs in a square arrangement. I initially assumed it had a wire feeding led data back up, to go to the next drop. On checking however, they are T jointed....

Questions:...

I got these TP4056 modules from an AliExpress vendor and fail to understand how the protection circuit works or if it’s just typical Ali shovelware. It could be my limited understanding of electronics....

I had an old USB Oscilloscope (StingRay), it's 20+ years old now....

Working on a joystick. Seems like any protocol I use to read from peripherals is going to be bottlenecked by having just one input. My microcontroller might have multiple ADCs, but there’s just one processor stepping through them. Same for spi, or i2c, or uart. There’s really only ever one sensor reporting back its data at a...

Hello altogether, I guess everybody has some USB-C cables lying around, but wonder if it’s 3A, 5A, 3.0, TB… Anybody able to recomment a device able to determine that? Maybe also something that can be combined with a load tester.

I’m planning to make a modular synth from scratch, but I need to start with the PSU. Do you see any issues with this schematic?...

cross-posted from: lemmy.world/post/9052986...

Just exploring about this tp-link XN020-G3v router. I’m mostly interested in connecting to the UART, won’t be tinkering with electronics of it, but out of curiosity I tried to search what these chips are. and I couldn’t find much about the big chip. Can anyone describe the 4 main chips on it ? Best would be datasheet, but...

hi again, since i had a bad idea in my last post i wanted to try again to get some feedback i could understand and apply....

The purpose of this PCB is to be small, have ok RF performance, and use USB as main power-source and interface. (Off course it has UART if USB is not available) this is just a somewhat challenge I set myself to design a esp32 PCB with the IC without a already made module....

So I’m a refrigeration tech with some electronics manufacturing experience. But I’ve never combined the 2 skillsets so I’ve been toying with the idea of building a large vapor chamber to cool a computer via direct immersion in a refrigerant. I know its about as far from practical as you can get but it sounds like fun....

It’s an SPST-NO micro switch. Don’t waste time searching for it. I already wasted mine. Just let me know what it is if you know it off the top of your head. 😊

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I migrated here in the US (specifically in San Bernardino, CA). Quick Intro: I’m a graduate electrical engineer; honestly, I really don’t have that much experience and not even a decent internship experience due to covid, resulting in an online OJT. Do you think doing an internship here in the US is the way to go? If yes,...