The underappreciated gem of /proc//mem
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• lcamtuf
Weekend trivia: your process' memory is a file
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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 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
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
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
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
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
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
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