FLIP fluid on flip-dots: a clicky, real-time physics display

A maker built a real-time fluid simulation on an electromechanical flip-dot display, turning physics code into a sea of clicking physical dots.

Hardware hacker mitxela put a FLIP (Fluid Implicit Particle) physics model onto salvaged flip-dot panels for the EMF2026 festival. The motivation was partly the pun, but mostly audio: LED liquid simulations are completely silent, while mechanical flip-dots make their own swishing sound. He got salvaged 2007 Hanover panels from collector Look Mum No Computer, then hacked the drive circuits to speed up panel updates.

Why it matters: Most digital physics simulations live behind silent glass screens. This project pairs clever electrical timing with obsolete bus-sign hardware to build an audible, tactile display out of physical moving parts.

Know this: Flip-dots keep their position without power using permanent magnets. While a dot takes 60 milliseconds to physically flip over, it only needs a 1-millisecond electrical pulse to switch state—allowing much faster matrix scanning across the board.

Here's hoping a Chinese factory starts churning out cheap flip-dot panels for the rest of us soon.