Hello! The blog you’re trying to reach is currently unavailable.
lcamtuf’s thing
• lcamtuf
Negative resistance
Subscribe
lcamtuf’s thing
geek culture, algorithms, electronic circuit design, and chainsaw safety tips
- Webmaster
- Generator
- Substack
- Rights
- lcamtuf
- Public lists
- davewiner/hackerNewsStars
- Fetched
lcamtuf’s thing
• lcamtuf
My falling-out with the rationalist community
This is an article I resisted writing for a long time.
lcamtuf’s thing
• lcamtuf
Tech note: making your own V-I plots at home
When working on my latest book, The Secret Life of Circuits, I wanted to keep the artwork real.
lcamtuf’s thing
• lcamtuf
Panel meter calculator with floating point
Yes, there's a video at the end of the article.
lcamtuf’s thing
• lcamtuf
Cursed circuits #6: reverse avalanche oscillator
An oscillator so bad it's actually good. But seriously, it's still bad. But in a good way?
lcamtuf’s thing
• lcamtuf
Cursed circuits #5: capacitance multiplier
Capacitor vendors don't want you to know this! Save money on capacitors by spending more on other components
lcamtuf’s thing
• lcamtuf
All logic, no bite
This radio station gets many requests for treatises on formal logic.
lcamtuf’s thing
• lcamtuf
AI children's books, body horror edition
Last week, I posted a visual demonstration of the sameness of AI-generated content.
lcamtuf’s thing
• lcamtuf
The 100,000 whys of AI
One of the most painful arguments I keep having with fellow techies is the question of whether you can distinguish between human-written and AI-generated text.
lcamtuf’s thing
• lcamtuf
Getting silly with C, part &((int*)-8)[3]
![Getting silly with C, part &((int*)-8)[3]](https://substack-post-media.s3.amazonaws.com/public/images/eb358cde-7901-46a3-abfc-b9db4b9f9a74_1000x592.jpeg)
Read on to uplevel your coding SKILLS.md.
lcamtuf’s thing
• lcamtuf
Weekend trivia: your process' memory is a file
The underappreciated gem of /proc//mem
lcamtuf’s thing
• lcamtuf
A nicer voltmeter clock
Sometimes, electronic circuit design is mostly about wood
lcamtuf’s thing
• lcamtuf
A breakthrough in C/C++ dependency management
Bringing a well-known programming language into the 21st century.
lcamtuf’s thing
• lcamtuf
The Secret Life of Circuits
Many of you follow this blog because of the regular features about electronic circuit design.
lcamtuf’s thing
• lcamtuf
Why I refrain from infosec punditry
If you know about my professional background, the most puzzling aspect of this Substack must be that I don’t use it to talk about my primary field of expertise: information security.
lcamtuf’s thing
• lcamtuf
Conway's Game of Life, in real life
When life gives you switches...
lcamtuf’s thing
• lcamtuf
How much of HN is AI?
TL;DR: As of June 2026, ~50% of daily top stories are about AI or generated by AI.
lcamtuf’s thing
• lcamtuf
Approximation game
The number 22/7 and the pigeon flock of Peter Gustav Lejeune Dirichlet.
lcamtuf’s thing
• lcamtuf
Unreal numbers
Reals are really weird.
lcamtuf’s thing
• lcamtuf
It's all a blur
Designing a slightly sneaky blur filter and then poking holes in it.
lcamtuf’s thing
• lcamtuf
You gotta think outside the hypercube
A closer look at the tesseract and the ways we can render it on the screen.
lcamtuf’s thing
• lcamtuf
See it with your lying ears
This blog has a history of answering questions that no one should be asking. Today, we continue that proud legacy.
lcamtuf’s thing
• lcamtuf
Cursed circuits #4: PLL frequency multiplier
How do you turn 1 MHz into 100 MHz? With magic, of course.
lcamtuf’s thing
• lcamtuf
Cursed circuits #3: true mathematics
Op-amp arithmetics, explained in a more accessible way