Terry Davis Demos SimStructure (2016-08-25)
Why Hacker News recommends it
HN links it with timestamps as an early, hands-on demo of control theory and as a curiosity from Davis's work.
What it is
Terry Davis, author of TempleOS, demonstrates his SimStructure physics simulator and builds a PID controller using math from Numerical Recipes in C. The description notes PID controllers are used in everything from rockets to espresso machines.
Recommended by 0 HN commenters across 0 different months, 2018 to 2022.
What Hacker News said
Cites esaym · 2018-09 · on “From Scratch: AI Balancing Act in 50 Lines of Python”
Not sure why this has to be AI specific.. Terry Davis was doing this 15+ years ago: [this video] Seems to be more of an issue of knowing calculus and control system patterns.
Cites sam36 · 2022-04 · on “Boycott Numerical Recipes (2007)”
Heh, I haven't seen or read NR but added it to my wishlist after watching Terry Davis mention it [at 8:15] [this video] Seemed to work well enough for him.
Cites scrlk · 2022-10 · on “The Fundamentals of Control Theory”
I assume it's this video ("Terry Davis Demos SimStructure (2016-08-25)"): [this video] He starts talking about PID controllers at around 3:40.