Velxio
Arduino emulator running entirely in the browser
What it does
It allows you to write Arduino sketches, compile them using arduino-cli, and simulate circuits with a real AVR8 CPU emulator and interactive electronic components. The platform supports multiple boards including Arduino Uno, Nano, Mega, and Raspberry Pi Pico, with peripherals such as GPIO, SPI, I2C, UART, and ADC mapped to visual components. The goal of the project is to create an open-source environment where developers and makers can experiment with Arduino circuits
Does the same job
all alternatives →- WWWasmino = WASM and Arduino – Running Arduino Code in Browser2020 · blog.yifangu.com · ▲84
- IPInteractive pinout for the Raspberry Pi Pico 22025 · pico2.pinout.xyz · ▲150
I've been trying to make accessible and beautiful GPIO pinouts since I started one for the Raspberry Pi in 2013 [1]. I've since given the Raspberry Pi Pico [2] and Pico 2 [3] microcontrollers the same treatment when they launched. Recently I've updated these with a new "Upside-down" view to complement the rear view, giving a pinout in the right orientation to match your project. The Pico sites are all hand-coded single HTML pages with supporting CSS and minimal JS. They are set up to optionally install as a "Desktop" web app. They also degrade into a somewhat usable table in lieu of CSS and…
- IBI built a handheld CHIP-8 game console to teach myself embedded systems2022 · github.com · ▲128
A while back I wrote a CHIP-8 emulator (which is considered the Hello, World! of emulators and is more accurately a virtual machine since historically CHIP-8 was an interpreted language running on top of the COSMAC VIP to make game programming easier). But a few months ago I got really interested in embedded software, so decided it would be neat to port my emulator to a STM32 MCU and design a console around it as a learning experience, since CHIP-8 never existed as a physical system. I didn't know much about embedded software when I began, and even less about electronics, but I managed to…
More dev tools this month
the category →
The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
Launched alongside, March 2026
the whole month →
Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com
