Velxio: Open-source browser-based emulator for Arduino, ESP32, and more

tom_doerr · x · 2026-08-11

Velxio is an open-source multi-board emulator that lets you write, compile, and run Arduino C++ or Python in the browser, simulating 19 real boards like Arduino Uno, ESP32, and Raspberry Pi Pico. No hardware or cloud needed. It has 2.6k stars on GitHub and offers 48+ interactive components.

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