Velxio 2.0: Run Arduino and Microcontroller Simulations in Your Browser

Velxio 2.0 eliminates the need for physical hardware when prototyping and testing embedded systems, making microcontroller development accessible to both beginners and professionals. With support for 19 boards across 5 CPU architectures and 48+ interactive components—all running locally in a browser—developers can iterate faster without hardware procurement delays. As a free, open-source tool requiring no installation, it democratizes access to embedded systems development and learning.