Velxio

For makers, students, and embedded developers, Velxio lets you test firmware and circuit ideas without first setting up a physical board. Its browser-based editor supports Arduino C++ and a range of boards, including Arduino Uno, Nano and Mega, ESP32, Raspberry Pi Pico, and ATtiny85. Write and compile code, then run it on an emulated CPU and connect the board to interactive components such as LEDs, buttons, sensors, displays, and motors. Velxio also includes an analog circuit solver, so you can explore how circuit voltages interact with microcontroller inputs, and a Serial Monitor for viewing output while a simulation runs. It can help learners experiment with electronics and developers prototype or debug embedded projects before trying them on hardware. Some board families and features may have different access requirements.

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