lcamtuf’s thing

Cursed circuits #4: PLL frequency multiplier

How do you turn 1 MHz into 100 MHz? With magic, of course.

Dec 26, 2025

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Cursed circuits #3: true mathematics

Op-amp arithmetics, explained in a more accessible way

Dec 22, 2025

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15

1

Cursed circuits #2: switched capacitor lowpass

Still using resistors? Get on with the times.

Dec 4, 2025

16

1

Cursed circuits: charge pump voltage halver

There's plenty of circuits that are hard to understand because they're complicated. And some that are hard to make sense of because they seem too…

Dec 2, 2025

23

November 2025

It's hard to build an oscillator

Especially if you want it to work.

Nov 21, 2025

39

10

When it comes to writing, LLMs have won

As a middling author, I find it fairly easy to sniff out LLM-generated articles.

Nov 13, 2025

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What's the deal with Euler's identity?

Untangling a cursed formula from 1748.

Nov 8, 2025

30

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Things you can do with diodes

Paying homage to the component we usually don't think about.

Nov 2, 2025

37

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October 2025

Weekend projects: Chicken Squisher 3000

If it clucks like a duck...

Oct 14, 2025

31

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3

September 2025

Zombies

Interior of an abandoned, boarded-up convenience store.

Sep 29, 2025

24

5

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.

Sep 27, 2025

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Folks, we have the best π

And some novel ideas for bicycle wheel design.

Sep 15, 2025

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