Multi-board (Arduino, esp32,pi) emulator with an in-canvas AI Agent
18 hours ago
- #Microcontroller
- #SPICE
- #Circuit Simulation
- Velxio is a free, open-source online circuit simulator with hybrid digital + analog co-simulation using real-time SPICE analysis.
- It supports 19 boards across 5 CPU architectures, including Arduino, ESP32, RP2040, and ATtiny85, with real emulation via avr8js, rp2040js, and QEMU.
- Features include 100+ SPICE-accurate components, live instruments (oscilloscope, voltmeter, ammeter), custom chip creation in C/Rust/AssemblyScript, and no cloud or account required.
- Version 2.5 introduces ngspice-WASM for analog simulation, hybrid co-simulation allowing GPIO pins to interact with SPICE nets, and 40+ new analog examples.
- Velxio is self-hostable via Docker, works offline after initial load, and is a free alternative to Wokwi, Falstad, Tinkercad, and CircuitLab.