lcamtuf’s thing

Cursed circuits #2: switched capacitor lowpass

Still using resistors? Get on with the times.

22 hrs ago

10

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

18

November 2025

It's hard to build an oscillator

Especially if you want it to work.

Nov 21

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

44

20

4

What's the deal with Euler's identity?

Untangling a cursed formula from 1748.

Nov 8

28

1

1

Things you can do with diodes

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

Nov 2

37

4

2

October 2025

Weekend projects: Chicken Squisher 3000

If it clucks like a duck...

Oct 14

31

7

3

September 2025

Zombies

Interior of an abandoned, boarded-up convenience store.

Sep 29

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

34

14

1

Folks, we have the best π

And some novel ideas for bicycle wheel design.

Sep 15

58

10

2

Getting silly with C, part ~(~1<<1)

It's vibe coding. Relax, everyone is doing it.

Sep 7

22

2

How many dimensions is this?

A degree in mathematics might not save you from stacking boxes for a living.

Sep 3

32

5