31
Getting silly with C, part (void*)2
They won't be able to find bugs in your code if they can't figure out how it works.
Michał Zalewski (lcamtuf)
geek culture, algorithms, electronic circuit design, and chainsaw safety tips. Click to read lcamtuf’s thing, a Substack publication with thousands of subscribers.
- Popular posts
- 50
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- 12,801
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- 5,474
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- #57 personal
Visit lcamtuf.substack.com → RSS feedOn Hacker News Oct 2022 – Jul 2026
Hardware & Electronics 21Science & Space 20Society, Policy & Culture 12Math & Algorithms 10Life, Learning & Writing 8Tech Industry & Business 7
32
How do transistors work, anyway?
The internet is littered with explanations of how transistors work. Most of them don't really explain anything.
33
Choosing an op-amp for your project
Just say no to LM741 and LM324 / LM358.
34
PSA: If you're a fan of ATmega, try AVR Dx
A little-known offshoot of the ATmega series of 8-bit microcontrollers is better, faster, and cheaper than its progenitor.
35
LLMs are good at playing you
Large language models seem just like humans, but some of this is in our heads.
36
How has mathematics gotten so abstract?
What's the meaning of "numbers" and "arithmetic operations"? We consult Georg Cantor's turtles and look at Giuseppe Peano's code.
37
The 101 of analog signal filtering (2024)
Some intuition about this topic can be developed without summoning the ghost of Pierre-Simon Laplace.
38
Dispatches from the farm upstate
Middle-aged computer expert opts to escape civilization, offers dubious life advice.
39
The evolution of expert communities
A look at how online forums grow, thrive, and then decay.
40
How many dimensions is this?
A degree in mathematics might not save you from stacking boxes for a living.
41
Not so fast, Mr. Fourier
A real explanation of discrete Fourier transform (DFT, FFT), discrete cosine transform (DCT), and their inverses.
42
Cursed circuits #5: capacitance multiplier
Capacitor vendors don't want you to know this! Save money on capacitors by spending more on other components
43
The secret lives of snowblowers
Yes, they throw snow. But the mechanical design of residential snowblowers is more interesting than it seems.
44
Deep dive: the instability of op-amps
A closer look at op-amp feedback loops and the stability criteria for circuits that use them.
45
I Built an Ld_preload Worm
Teenagers' hands are the devil's playthings.
46
The asymmetry of nudges
Answering the age-old question: why do bad decisions happen to good companies?
47
The marvelous disappearing capacitor
The performance of photodiode amplifiers can be improved in a clever way.
48
How much of HN is AI?
TL;DR: 62% as of September 2026. This is up from ~40% in February.
49
50
You gotta think outside the hypercube
A closer look at the tesseract and the ways we can render it on the screen.