fastled-wasm 1.0.2

FastLED Wasm Compiler

FastLED wasm compiler

Compiles an Arduino/Platformio sketch into a wasm binary that can be run directly in the web browser.

About

This python app will compile your FastLED style sketches into html/js/wasm output that runs directly in the browser.

Compile times are unreal - faster than any other physical platform.

I've seen compiles as fast as 5 seconds, though they typically take around 10.

This works on Windows/Linux/Mac(arm/x64).

Docker is required.

https://github.com/user-attachments/assets/bde26ddd-d24d-4a78-90b6-ac05359677fa

Install

pip install fastled-wasm

Use

Change to the directory where the sketch lives and run

fastled-wasm --open

The compiler should download, compile the target and then launch a web-browser.

About the compilation.

Pre-processing is done to your source files. A fake Arduino.h will be inserted into your source files that will provide shims for most of the common api points.

Revisions

1.0.2 - Small bug with new installs. 1.0.1 - Re-use is no longer the default, due to problems. 1.0.0 - Initial release.