# 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

```bash
arduino-cli version
arduino-cli core install arduino:avr
```

### 2. Start the Backend

```bash
cd backend
venv\Scripts\activate
uvicorn app.main:app --reload --port 8001
```

### 3. Start the Frontend

```bash
cd frontend
npm run dev
```

### 4. Open in the Browser

- Frontend: http://localhost:5173
- Backend API: http://localhost:8001
- API Docs: http://localhost:8001/docs

## Update Wokwi Libraries

```bash
# 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

```bash
cd wokwi-libs/wokwi-elements
npm run build
```

### Error: "Cannot find module 'avr8js'"

```bash
cd wokwi-libs/avr8js
npm install
npm run build
```

### arduino-cli does not work

```bash
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

```bash
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
