Project Status - Velxio Arduino Emulator
Summary of Implemented Features
Wokwi Repositories Cloned and Configured
Official Wokwi repositories in wokwi-libs/:
| Repository |
Status |
Description |
| wokwi-elements |
Built and in use |
48+ electronic Web Components |
| avr8js |
Built and in use |
Real AVR8 emulation (ATmega328p) |
| rp2040js |
Cloned |
RP2040 emulator (future use) |
| wokwi-features |
Cloned |
Documentation and feature tracking |
Real AVR Emulation (avr8js)
| Feature |
Status |
| ATmega328p CPU at 16MHz |
Working |
| Timer0, Timer1, Timer2 |
Working |
| USART (Serial) |
Working |
| ADC (analogRead) |
Working |
| Full GPIO (PORTB/C/D) |
Working |
| Loop ~60fps (267k cycles/frame) |
Working |
| Speed control (0.1x - 10x) |
Working |
| Step-by-step debugging |
Working |
| PWM monitoring (6 channels) |
Working |
| External pin injection (inputs) |
Working |
Component System (48+)
| Feature |
Status |
| Automatic discovery via AST |
48 components detected |
| ComponentPickerModal with search |
Working |
| 9 categories with filters |
Working |
| Live thumbnails (web components) |
Working |
| Generic DynamicComponent renderer |
Working |
| Drag-and-drop on canvas |
Working |
| Rotation (90° increments) |
Working |
| Properties dialog (click) |
Working |
| Pin selector (double-click) |
Working |
| Pin overlay (clickable cyan dots) |
Working |
16 Parts with Interactive Simulation
| Part |
Type |
Status |
| LED |
Output |
✅ |
| RGB LED |
Output (digital + PWM) |
✅ |
| LED Bar Graph (10 LEDs) |
Output |
✅ |
| 7-Segment Display |
Output |
✅ |
| Pushbutton |
Input |
✅ |
| Pushbutton 6mm |
Input |
✅ |
| Slide Switch |
Input |
✅ |
| DIP Switch 8 |
Input |
✅ |
| Potentiometer |
Input (ADC) |
✅ |
| Slide Potentiometer |
Input (ADC) |
✅ |
| Photoresistor |
Input/Output |
✅ |
| Analog Joystick |
Input (ADC + digital) |
✅ |
| Servo |
Output |
✅ |
| Buzzer |
Output (Web Audio) |
✅ |
| LCD 1602 |
Output (full HD44780) |
✅ |
| LCD 2004 |
Output (full HD44780) |
✅ |
Wire System
| Feature |
Status |
| Pin-to-pin creation with click |
Working |
| Real-time preview (green, dashed) |
Working |
| Orthogonal routing (no diagonals) |
Working |
| Segment editing (perpendicular drag) |
Working |
| 8 colors by signal type |
Working |
| Automatic offset for parallel wires |
Working |
| Auto-update when moving components |
Working |
| Grid snapping (20px) |
Working |
| Wire selection and deletion |
Working |
Code Editor
| Feature |
Status |
| Monaco Editor (C++, dark theme) |
Working |
| Syntax highlighting + autocomplete |
Working |
| Compile/Run/Stop/Reset buttons |
Working |
| Compilation via arduino-cli backend |
Working |
| Error/success messages |
Working |
| Configurable font size |
Working |
Examples (8 Projects)
| Example |
Category |
Difficulty |
| Blink LED |
basics |
beginner |
| Traffic Light |
basics |
beginner |
| Button Control |
basics |
beginner |
| Fade LED (PWM) |
basics |
beginner |
| Serial Hello World |
communication |
beginner |
| RGB LED Colors |
basics |
intermediate |
| Simon Says Game |
games |
advanced |
| LCD 20x4 Display |
displays |
intermediate |
- Gallery with category and difficulty filters
- One-click load (code + components + wires)
Configured Integrations
| Item |
Status |
| Vite aliases for local repos |
✅ |
Package.json with file:../wokwi-libs/... |
✅ |
| TypeScript declarations for Web Components |
✅ |
| Backend CORS (ports 5173-5175) |
✅ |
| React Router (2 routes) |
✅ |
| Zustand stores (editor + simulator) |
✅ |
Documentation
| File |
Description |
README.md |
Installation and usage instructions |
docs/ARCHITECTURE.md |
Detailed project architecture |
docs/WOKWI_LIBS.md |
Wokwi integration guide |
docs/SETUP_COMPLETE.md |
This file — project status |
CLAUDE.md |
Guide for AI assistants |
update-wokwi-libs.bat |
Automatic update script |
Getting Started
1. Ensure arduino-cli is installed
arduino-cli version
arduino-cli core install arduino:avr
2. Start the Backend
cd backend
venv\Scripts\activate
uvicorn app.main:app --reload --port 8001
3. Start the Frontend
cd frontend
npm run dev
4. Open in the Browser
Update Wokwi Libraries
# Run the update script
update-wokwi-libs.bat
# Regenerate component metadata (if you updated wokwi-elements)
cd frontend
npx tsx ../scripts/generate-component-metadata.ts
Next Steps (Pending)
| Feature |
Priority |
Description |
| Serial Monitor |
High |
UI for reading USART output from the simulation |
| Persistence |
High |
SQLite for saving/loading projects |
| Undo/Redo |
Medium |
Edit history for code and circuit |
| Multi-board |
Medium |
Board switching at runtime (Mega, Nano, ESP32) |
| Wire validation |
Medium |
Electrical validation and error highlighting |
| Export/Import |
Low |
Share projects as files |
Troubleshooting
Components are not displayed
cd wokwi-libs/wokwi-elements
npm run build
Error: "Cannot find module 'avr8js'"
cd wokwi-libs/avr8js
npm install
npm run build
arduino-cli does not work
arduino-cli version
arduino-cli core list
arduino-cli core install arduino:avr
LED does not blink in simulation
- Verify that you compiled the code (Compile button)
- Verify that you started the simulation (Run button)
- Check the browser console for port listener errors
- Verify the pin mapping in the component properties dialog
New component does not appear in the picker
cd frontend
npx tsx ../scripts/generate-component-metadata.ts
General Status
The project has all core features implemented:
- Professional code editor (Monaco)
- Local Arduino compilation (arduino-cli)
- Real AVR8 emulation with full peripherals
- 48+ electronic components with automatic discovery
- 16 parts with interactive simulation (LED, LCD, buttons, potentiometers, servo, buzzer)
- Orthogonal wire system with visual editing
- 8 example projects with a filterable gallery
- Automatic update system for Wokwi libraries