Lmst

#Electronics

Как автоматизировали диско-шар 🪩 Инженеры офиса превратили батареечный шар в умную, управляемую систему: питание, управление и эффектно! Короткий DIY-репортаж с хитростями по электронике и автоматике — вдохновение для офиса и хобби. #IoT #Automation #DIY #Electronics #OfficeHack #WirenBoard #Tech #Russian
https://peertube.wirenboard.com/videos/watch/2a12d844-2f14-47a4-8505-9800d7907949

I'm designing an ADSR circuit where I use a schmitt trigger to store the state of the envelope and figuring out the resistor values to get the threshold voltages I wanted was a bit slow, so I made this little tool for playing around with them: https://tools.sandelinos.me/opamp-schmitt-trigger-playground

Just put in the output saturation voltages of your opamp and mess around with the resistor values (the arrow buttons jump through E12 standard values) until you get thresholds that you like.

#SynthDIY #electronics

Why do microcontroller code needs comments more than everything else... Just debugged this. :woozy_baa: #electronics

$/* set to highest Vcore for 480 MHz operation */ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0); /* * Three CFLAGS: USE_PWR_LDO_SUPPLY, USE_PWR_EXTERNAL_SOURCE_SUPPLY, and * SMPS must be set properly, so the HAL's startup_stm32h743xx.s configures * the voltage regulation properly (startup_stm32h743xx.s calls ExitRun0Mode * in system_stm32h7xx.c), allowing the MCU to exit the early "Run*" mode. * * Without doing so, the PWR_FLAG_VOSRDY bit is never set, and the MCU gets * stuck in an endless loop during boot. The STM32Cube IDE auto-adds the * macro while generating the project, but bare-metal projects need to set * CFLAGS manually. Use "make clean" after changing CFLAGS. * * WARNING: improper configuration (e.g. unset USE_PWR_LDO_SUPPLY for an * LDO design) can soft-brick MCU and SWD as Vcore is disabled, to recover, * connect the BOOT pin to VDD, and power cycle the PCB. * * See: * * Reference Manual (RM0433 Rev 8), page 262. * * Default settings for NUCLEO-H755 not working after power off * https://www.st.com/en/microcontrollers-microprocessors/stm32h743vi.html */ while (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) { ; /* wait for the LDO */ }$

TechSpot: YouTuber built a car powered by 500 discarded vapes, and drove it 18 miles. “A small car parked in a rainy British driveway might seem an unlikely place for a battery revolution. Yet that’s where engineer and YouTuber Chris Doel has built the world’s first vape-powered vehicle – a working proof of concept that challenges both the limits of lithium-ion recycling and society’s growing […]

https://rbfirehose.com/2026/03/13/techspot-youtuber-built-a-car-powered-by-500-discarded-vapes-and-drove-it-18-miles/

Are you looking to get your amateur/ham radio license in or near central Ohio?

The W8LT VE team's next exam session is Sat, April 11 at 12 PM in the Founder's Room at the Ohio Union at the Ohio State University.

Pre-registration is required!

https://w8ltve.team/exams/2026-04-11-exam

#OhioState #Ohio #HamRadio #AmateurRadio #hamr #Columbus #ColumbusOH #ColumbusOhio #OSU #OhioStateUniversity #TheOhioStateUniversity #CentralOH #CentralOhio #cbus #radio #electronics #physics

Hello, wonderful people. Taking a break is good, so I am taking a couple moments to write the #nakeddiefriday post of the week.

Today we have this interesting sample. Yes, it has certainly seen better days; been sitting in a queue for a real while now. This is again a smartcard chip without a name to it. I believe this to be fabbed by Samsung, and be rather old. The chip is built using poly-gate CMOS with 3 metal layers; later processes moved to a higher layer count.

#electronics #smartcards #reverseengineering

ESP8266 (and ESP32)

These little modules have taken hobby electronics by storm, so of course I grabbed a few of them and have been hacking away quietly on both the ESP8266 and the ESP32.(...)

#electronics #esp32 #esp8266 #expressif #hardware #mcu #microcontrollers #resources

https://taoofmac.com/space/hw/esp8266?utm_content=atom&utm_source=mastodon&utm_medium=social

Ok yeah, I’m stoked at how these turned out. DIN rail wire spool holders that can be changed out easily. I was finally able to get half way decent prints outa this old Ultimaker with a .8mm nozzle.
#3dprinting #electronics #workbench

The existence of power rails and power trains implies the existence of power passengers.

#electronics #shitpost

Saturday, 28 March, there are many hackerspaces that participate to the "International Open Day".

Boost = ❤️

Visit one of the NL participating spaces :

AwesomeSpace, Hilversum
@bitlair Amersfoort
@hack42 Arnhem
@hackalot Eindhoven
@hermithive Nieuwegein
@hsdrenthe Coevorden
@HSN Nijmegen (nieuwe locatie!)
@maakplek Groningen
@nurdspace Wageningen
@pixelbar Rotterdam
@randomdata Utrecht
@revspace Leidschendam
Space Leiden, Leiden
@TDvenlo Venlo
@TechInc Amsterdam
@tkkrlab Enschede

#hackerspaces #makerspaces #DIY #linux #opensource #electronics #arduino

Hm, has anyone designed something with a TMUXHS4446? Thought about building a USB-C -> 2 DP + USB-C utilizing this today. #electronics

I have a project in mind that needs as short of a 7 pin big DIN male connector as I can get, ideally attachable to a PCB flush at its base. Ripping one out of a typical DIN cable is way too deep the way the usual in-cable housings work. This pictured part from a supplier on Alibaba is the closest I've found.

Does anyone have any insights on sourcing some in the US for prototyping? More precise terminology to describe the form factor or a better PCB mountable version?

#electronics #pcbdesign

Photograph of a minimal 7 pin big DIN connector showing it from the front and back ends. The seven pins are arranged in a nearly completely circular layout.

[#TRADESHOW] #productronica #China 2026 will be held from March 25 to March 27, 2026, at the #Shanghai New #International #Expo #Centre. Dedicated to the entire #electronic #manufacturing #industry #chain, the #exhibition presents a one-stop #platform #event for #innovative #smart #manufacturing, covering cutting-edge #technologies from #SMT and #automation to new energy #vehicle (#NEV) #electronics. https://cnbusinessforum.com/event/productronica-china-2026/

for comparison some pictures of #PCB made here in the fablab of @waag with an #xtool F1 Ultra. #fabacademy #electronics

Another improvement in #fabacademy 's #electronics production week appears to be the #xtool UV laser. Along with the F1/F2 Ultra, this one seems capable of producing even more usable (and smaller) PCBs.

https://class.academany.org/futures/microelectronics/2026/labs/isafjordur/students/hanndoddi/notes/uvlaser/

#Fabacademy started the #electronics production where students learn howto prototype #PCB 's. Huge progress this year with the addition of the fablib (standard Fab Lab) #Kicad plugin.

https://gitlab.fabcloud.org/pub/libraries/electronics/kicad

And since yesterday, the Gerber2Png plugin for producing machinable PNGs directly from #kicad.

https://github.com/fabalabkerala/Gerber2Png-Plug-in-for-Kicad

Electronic dice! #electronics

what are some of the best tech/electronics upgrades you've ever made?

I remember the tips of my Radio shack soldering irons oxidizing away to stubs within the space of an hour if I scratched or scuffed or didn't keep them properly tinned at all times.

I think I've had the current tip on my Hakko for six months now and the tip is bent from using it to force pieces of component legs out of through-holes while desoldering. yet somehow it endures. that little tin of Radio Shack tip cleaner I used to use religiously is now almost forgotten.

is this just the advantages of modern metallurgy or was there always this big of a gulf in performance?

#retrocomputing #electronics