Reddit:Electronics

My first attempt at something freeform. A couple of WS2812 controlled by a small esp32 board. The feet are connected to capacitive touch sensors to control on/off, color mode and brightness.

Ear piece no longer works on my radio after I went to the ground and landed on it causing the metal ring to come out.

Radio still works fine just not with an ear piece. What would I have to do to go about fixing this?

for the positive voltage rail its an lm317 regulator with a bd912 transistor and for the negative rail its going to be a bd911 transistor with an lm337 regulator. i heard using regulators for audio amplifiers is pointless but also not since it may remove oscilations and hum,get rid of expensive 4,7mF(or bigger) capacitors as well as give me a stable +/-20V regardless the current which may be usefull.

motor speed controller from random parts on my desk

I am starting a family or a addiction 😅 -The arduino nano with the led is a tv b gone -the orange thing is a m5stickc plus2 -the usb purple thing is a cjmcu badusb -and the white thing is a flipper zero with external antenna

If you have your TV attached to a good, mid 2000 Hi-Fi, probably you have two remotes laying around, or if you are a retro gamer, you probably have to get up from your couch to restart or turn off tour PS2. This device allows you to control all from a single remote

It respond to a received IR code with a previously programmed, corresponding IR command to control a second device. It is fully open source and there’s a github repository for all the work I’ve done so far

Hi my laptop died and started to troubleshoot it. I found capacitors in these portion of motherboard to be shorting. Upon injecting voltage on one of the caps, this chip “eHCSA” was getting hot on FLIR camera. Does anyone know what this chip is and where can I order one? Can’t seem to find any on Aliexpress

broken transformer, insanely dodgy mains power switch (probably Stolen from a lamp sometime) and a shitty solder Job on a 7805 all added up to the thing ending in the scrap pile. fixing all these things made it work again, have to say is a decent low voltage low current supply.

They are now making 64 bit full Linux capable processors under the “STM32” name. I can understand putting the STM32MP1 series under the STM32 brand, but this should just be a new line of chips at this point.