# davidmonterocrespo24/velxio

Emulate Arduino, ESP32 & Raspberry Pi. in your browser. Write code, compile, and run on 19 real boards — Arduino Uno, ESP32, ESP32-C3, Raspberry Pi Pico, Raspberry Pi 3, and more. No hardware, no cloud, no limits.. Discord: https://discord.gg/3mARjJrh4E

Repository: https://github.com/davidmonterocrespo24/velxio
Canonical: https://ross.abutalabs.com/products/velxio
Homepage: https://velxio.dev
Language: TypeScript
License: NOASSERTION
License Family: other
Topics: arduino, esp32, simulation, wokwi, velxio
Last push: 2026-08-26T20:10:51+00:00

## Health v2 (maintenance only)
Score: 82/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 13
- inputs: {"age_days": 183, "days_push": 7, "days_rel": 9, "gap_med": 18, "n_releases_24m": 6}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2679, forks 272 (observed 2026-08-28T04:07:09.918572+00:00)

## What it is
Velxio is an open-source browser-based emulator and circuit simulator for Arduino, ESP32, Raspberry Pi, STM32 and other embedded boards, running real compiled firmware (Arduino C++, MicroPython, ESP-IDF) on cycle-accurate CPU emulation with 150+ interactive electronic components. It combines AVR8/RP2040 emulation in WebAssembly, QEMU-backed ESP32/RISC-V/Raspberry Pi Linux emulation, and ngspice-based analog circuit solving, with an AI assistant for building circuits.

## Use cases
- simulate arduino circuits in the browser without hardware
- test esp32 firmware before flashing to a real board
- learn electronics and embedded programming as a student
- prototype breadboard circuits with sensors like DHT22 and HC-SR04
- run a virtual raspberry pi with linux in the browser
- teach a microcontroller class without buying boards
- debug serial output and oscilloscope signals from an emulated board

## When to choose
- you want to prototype or learn embedded development without physical hardware
- you need a free, open-source Wokwi-style simulator supporting many boards and CPU architectures
- you want real compiled firmware execution plus SPICE-accurate analog circuit solving in one tool
- you need a classroom-friendly, browser-accessible electronics lab

## When to avoid
- you need cycle-exact timing validation for production silicon or certification
- you require boards or peripherals not in the supported catalogue
- you need a fully offline desktop tool without any backend for ESP32/Raspberry Pi emulation
- your project cannot comply with AGPLv3 and you cannot obtain a commercial license

## Facets
- artifact type: application
- maturity: active
- function: simulation, embedded, developer-tools, gui, editor
- domain: embedded-systems, education, hardware, simulation, developer-tools
- platform: browser, wasm, self-hosted
- tags: arduino-simulator, esp32-emulator, circuit-simulator, spice, qemu, microcontroller, electronics, micropython, wokwi-alternative, web-server, docker

## Member repositories
- davidmonterocrespo24/velxio (main) score 82

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:09.918572+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:17:57.509327+00:00, confidence not recorded.
  - readme: https://github.com/davidmonterocrespo24/velxio (fetched 2026-08-28T04:07:09.918572+00:00, sha 0508d566d082)
  - homepage: https://velxio.dev (fetched 2026-08-29T10:00:39.439617+00:00, sha 02738e7c21de)
  - site_page: https://velxio.dev/docs (fetched 2026-08-29T10:00:39.449075+00:00, sha 3b90a8b572b3)
  - site_page: https://velxio.dev/about (fetched 2026-08-29T10:00:39.450900+00:00, sha 9ac15ef95c77)
  - site_page: https://velxio.dev/account/desktop-install (fetched 2026-08-29T10:00:39.454670+00:00, sha 02738e7c21de)
  - site_page: https://velxio.dev/pricing (fetched 2026-08-29T10:00:39.452881+00:00, sha 02738e7c21de)
- Data as of 2026-08-30T08:39:29.467469+00:00.