StefanPetrick

Here the latest version of the code running on LEDs. At minute 19:58 the diffusor is removed. And this is a simulation of a 128x128 matrix:

Today I explored a more artistic way of visualizing the solver data. Since the velocity field is already being calculated internally anyway, I reused it as a brightness mask for the final render output. Add a bit of saturation and brightness...

I'm enjoying them.

Hi guys, I’m not sure whether you enjoy these updates or find them a bit too frequent. But I’m sharing them because feedback from potential users — and even silent lurkers — genuinely helps shape the project. It tells me what to improve, which...

Over the weekend I build some basic obstacle handling + improved the color mapping.

I thought I'd share a video of my own implementation (not an MCU, but I've been meaning to port to a Teensy 4):

I explain the model in detail here in this post in the FastLED subreddit. And I observed an emergent ring of fire.

Today I build something more complex - I'm simulating a coupled system of flow, heat, and smoke. The flow moves heat and smoke the heat creates flow cooling heat creates smoke and the renderer maps those fields into a flame appearance.

Thank you! Yes, after looking into the Navier Stokes equations I came across this brilliant paper, “Stable Fluids” by Jos Stam. This guided my experiments.

Very cool, thank you for sharing! Please say something about your simulation approach! Incompressible approximation or are you using a spectral method? I use a grid-based Eulerian pipeline: diffuse, project, advect, project again It is an...

Here a few more videos from all the advection mechanics I tested before considering to actually simulate the advection. And here my previous work based on my AnimARTrix engine.

The first tests are pretty promising. On an ESP32 it runs (without any optimisation yet) already with >30 fps on a 48x32 WS2812 matrix. So on a Teensy 4 + high res LED matrix this will fly. I guess we'll end up with a float-FPU version for Teensy...