control systems · robotics · physical AI
Where control theory meets physical intelligence.
Writing and interactive simulations on the systems that sense, decide, and move — from PID loops to diffusion policies.
Foundations
Control systems
Stability, sensitivity, feedback. The math that decides whether a moving system holds together — or doesn't.
Hardware
Robotics
Where algorithms meet actuators. Planning, perception, and the friction that separates a demo from a product.
Frontier
Physical AI
Learned controllers, world models, diffusion policies, vision-language-action models — and how they break when the real world pushes back.
Featured simulation
All sims →Control · PID
Inverted pendulum
Tune a PID controller in real time and watch the pole stabilize. The "hello world" of control theory — and the baseline we'll benchmark learned policies against.
Open simulation