Lmst

An LLM-Powered Tool to Catch PCB Schematic Mistakes

#HackerNews #LLMTool #PCB #Schematic #Mistakes #Electronics #Engineering #Innovation

Incomplete #Schematic of the #Morgue I plan to set my #Chroniclesofdarkness #oneshot. Based on a very large #Reddit post about different kinds of morgues.

The story is partly inspired by The Autopsy of Jane Doe. Note that I said "partially" inspired; players who've seen the movie still won't know everything I have planned.

#TTRPG
#Blueprint
#WorldOfDarkness
#HorrorRPG
#Discord
#mortuary
#TheAutopsyOfJaneDoe

Incomplete blue print for a fictional morgue.

The front door opens to a reception area, which itself has doors to an office, a viewing room, and a main hallway.

The viewing room has a glass window looking into a sealed viewing room for potentially infectious cadavers.

Behind the office is a staff room and kitchen. Behind the sealed viewing room are a locker room, showers, the post mortem room, and the cold room where bodies are stored.

In the cold room, against the outer wall, are ten columns of four lockers for body storage.

Every time someone designs a #PCB and puts the whole #schematic on one sheet, the Universe ritually sacrifices the cutest #unicorn.

You've been warned, you heathens. Top-level schematic symbols show the logical relationships between your clusterf*ck of parts!

A Glimpse of our Future Democracy

A set of schematics and text to give an example of the TDG:

https://tiereddemocraticgovernance.org/blog_details.php?blog_cat_id=30&id=512

#tiereddemocraticgovernance
#schematic #blueprint

the schematic that was found scribbled on the inventor's wall after she disappeared

#Circuit #Schematic #Plant #Vase #Symbols #Futuristic #Surreal #SciFi #Mysterious #Invention #Img2img #AiArt #AiArtists #AiArtCommunity #StableDiffusion

on non-virtual things: https://aieris.art/featured/the-schematic-that-was-found-scribbled-on-the-inventors-wall-after-she-disappeared-eris-and-ai.html

Futuristic and incomplete schematic drawings on a wall, in a room with a glowing patterned vase, succulent plant, and scattered mysterious metallic objects.

Схемотехника и алгоритмы световых мечей: вызовы и решения

Сага «Звёздные войны» давно стала больше, чем просто серией фильмов. Миллионы людей объединены общей страстью, и для многих из них обладание своим личным световым мечом становится очень важным. Ведь это не только предмет коллекционирования, технологический артефакт или даже спортивный инвентарь, а символ джедайской (или ситхской) философии. На этом интересе вырос целый рынок. Есть компании, которые производят световые мечи целиком. Есть те, кто специализируется только на отдельных компонентах: рукоятях, платах, светодиодных модулях и прочей электронике. Привет, на связи Крэйл из команды умных устройств Яндекса. Но сегодня я расскажу не о Станциях, а о своём необычном хобби. Однажды ко мне обратились производители компонентов с задачей разработать электронику для кастомных световых мечей. Проект оказался ярким во всех смыслах. А в статье я расскажу о том, какие были условия и как я справлялся с поставленными задачами.

https://habr.com/ru/companies/yandex/articles/938258/

#starwars #schematic #microcontrollers #pcb #lightsaber #hardware_design

Схемотехника и алгоритмы световых мечей: вызовы и решения

Сага «Звёздные войны» давно стала больше, чем просто серией фильмов. Миллионы людей объединены общей страстью, и для многих из них обладание своим личным световым мечом становится очень важным. Ведь это не только предмет коллекционирования, технологический артефакт или даже спортивный инвентарь, а символ джедайской (или ситхской) философии. На этом интересе вырос целый рынок. Есть компании, которые производят световые мечи целиком. Есть те, кто специализируется только на отдельных компонентах: рукоятях, платах, светодиодных модулях и прочей электронике. Привет, на связи Крэйл из команды умных устройств Яндекса. Но сегодня я расскажу не о Станциях, а о своём необычном хобби. Однажды ко мне обратились производители компонентов с задачей разработать электронику для кастомных световых мечей. Проект оказался ярким во всех смыслах. А в статье я расскажу о том, какие были условия и как я справлялся с поставленными задачами.

https://habr.com/ru/companies/yandex/articles/938258/

#starwars #schematic #microcontrollers #pcb #lightsaber #hardware_design

#Schematic #representation #of #NATO #reconnaissance #aircraft #operations #off #the #coast #of #Crimea , #Novorossiysk #and #the #Black #Sea #in #July 2025.

#Participants:

• #Boeing RC-135W #Rivet #Joint #🇬🇧

• #Northrop #Grumman RQ-4B #Global #Hawk 🇺🇸

• #Boeing P-8A #Poseidon 🇺🇸

• #Bombardier #Challenger 650 #ARTEMIS #🇺🇸

• #Gulfstream #G550 #AEW #🇮🇹

• #Dassault #Rafale B #🇫🇷

• #Bombardier #Global #6000 #HAVA #SOJ #🇹🇷

• #ATR 72-600 #TMPA 🇹🇷

Well thanks, Sparkfun. Now I had to spend my morning updating Schemdraw to correct the DB9 vs DE9 name in its circuit element library, and add several other D-sub connectors. 😀

https://news.sparkfun.com/14298

#DB9 #DE9 #schemdraw #python #schematic

This will be slightly #geeky, and probably only of interest to #electronics hobbyists and #guitar players. I happen to sit in the intersection of that particular #Venn diagram.

When I was a teenager, having only been playing guitar for a few years, I owned a guitar #effects pedal that went on to become legendary - the Boss HM-2 "Heavy Metal" #pedal. Its sound is still ubiquitous in metal.

I don't have it any more. I think I traded it for an analog chorus, which was a seriously expensive pedal back then. Although I have other #distortion effects, I've missed it a lot over the years.

Well, lots of hobbyists build their own effects. And the circuit schematics for many effects, particularly the classics, are available online. So like many others, I decided to build my own HM-2.

This image is the schematic for the #HM2. It's not the most complicated pedal, but it's a league above something like an Ibanez Tube Screamer. As far as active devices go, it's got 6 #opamps and 10 #transistors of various types, along with a bunch of diodes for multiple types and stages of clipping, and the usual jumble of capacitors and resistors. Oh, and four potentiometers.

1/x

#EffectPedal #HeavyMetal #pedals #metal #DIY #schematic #circuit #hobby #OperationalAmplifier #TubeScreamer

A circuit schematic diagram for the Boss HM-2 "Heavy Metal" guitar effects pedal. It is fairly complicated as far as distortion pedals go, containing 6 operational amplifiers (opamps), 10 transistors of various types, and 4 potentiometers.

I don't know what goes into "good" alt text for a schematic. Shown here, the input signal enters at top-left and exits at the lower right side of the diagram, as is customary. In addition to the actual signal-processing path, it also includes a power supply section supporting 9V battery or AC adapter and which generates a 4.5V bias voltage in addition to buffering the power supply. There is also the traditional Boss "soft switching" which routes the signal either through the effect, or via a bypass to the output.

https://www.synthmanuals.com/manuals/korg/vc-10/service_manual/korg_vc-10_service_manual_rvgm.pdf

#electronic #schematic

Sometimes, you just gotta break out the #algebra and a touch of #calculus for a particular #led #circuit

At least, when you want to make sure you don't let out the magic smoke.

#electronics #circuits #lighting #schematic #math

An engineer's pad showing a computation for a particular LED circuit. On a wooden chipboard clipboard and a wooden desk.

"Here is a detailed circuit diagram for <application>. ... I have not built or tested this circuit, so please let me know if you have problems getting it working."

Well, isn't that special...

#hobby #electronics #schematic #circuit #wat #helpful #wtf

Transformer, rectifier, power cord. Someone put some thought into the paint on this electrical company van. #schematic

A van for an electric company with an electrical schematic painted on the side.

I just finished my first attempt at a design for a schematic symbol in Kicad for an MCU (STM32N657Z0H3QTR).

https://estore.st.com/en/stm32n657z0h3qtr-cpn.html

#pcb #mcu #kicad #schematic #stm32

Schematic: "2022 - We've updated the circuit design to use widely-available part AB1234DL rather than the impossible-to-find one the original design used!"

Website 2025: "AB1234DL: obsolete, not available to order"

Sigh.

#electronics #hobby #obsolete #obsolescent #schematic #part #component #replacement #substitute

It's amazing how I can paste a #schematic into #ChatGPT and have it interpret it. But it's also amazing the nature of the mistakes it sometimes makes.

ChatGPT said:
Why the MOSFET?
Normally in current mirrors you’d directly drive the load, but here the current mirror seems to control the MOSFET gate. This could mean:
1. Q7’s collector doesn’t actually need to sink much current — just enough to bias Q8.
2. The circuit could be a hybrid current mirror + switch, where the mirrored current indirectly enables another path (e.g., for higher power handling via Q8).

Where's the MOSFET in this circuit?
ChatGPT said: Great catch — let's re-examine that. You're absolutely right to ask that, because on closer inspection:

There is no MOSFET in this schematic.

The not-immediately-intuitive representation of guitar electrics motivated me to portray them in terms I can more easily comprehend.

#Guitar #Electrics #Diagram #Schematic

Picture of guitar volume and tone knobs, switch and pickup with wiggly coloured lines twisting between them.

Schematic diagram representing connections between guitar tone and volume potentiometers, switches and pickups.

Tutorial für ein externes 8x Kernal-Modul für den C64

Es gibt immer wieder Situationen, in denen man einen anderen Kernel für seinen Commodore C64 benötigt. Entweder um etwas zu testen oder weil man den Computer nicht öffnen möchte. Und so kam ich auf die Idee, eine solche kleine Steckkarte selbst zu bauen. Und für ein einfaches Mo…

#c64 #Cartridge #commodore #diy #Expansion #External #Kernal #Mode #Port #Schematic #Tutorial #Ultimax

https://dirkwouters.de/tutorial-fuer-ein-externes-8x-kernal-modul-fuer-den-c64/

Nachbildung des REX 9628 External Kernel 8 Modul

Ein neues Board aus Bildern von alten Boards erstellen, das war mein Ziel. Leider gab es immer nur Fragmente, und das von verschiedenen Versionen. Daher war eine exakte Nachbildung leider nicht möglich, aber die Platine als solches wurde neu erstellt. Das erforderte einige Sch…

#c64 #Cartridge #commodore #diy #EPROM #Extern #JLCPCB #Kernel #löten #Modul #Replica #REX #Schematic #TL866A

https://dirkwouters.de/rex-9628-external-kernal-8-cartridge/

#Schematic

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