Bit Switch

A Flutter application for controlling Legacy Wemo smart home devices on iOS and Android. This app provides local network control without requiring cloud connectivity.

• Device Discovery: Automatically discovers Wemo devices on your local network using SSDP/UPnP
• Device Control: Turn devices on/off, adjust brightness for dimmers
• Energy Monitoring: View power consumption for Insight plugs
• Cross-Platform: Works on both iOS and Android
• Dark Mode: Supports system light/dark theme preferences
• No Cloud Required: All communication happens locally on your network

Note: App Store listing is in progress

• Flutter SDK 3.44.6 or higher (stable channel) https://flutter.dev/
• iOS 12.0+ / Android 5.0 (API 21)+
• Wemo devices on the same local network

1. Clone the repository:

git clone https://github.com/yourusername/bit-switch.git
cd bit-switch

2. Install dependencies:

flutter pub get

3. Create multiple specific platforms

flutter create --platforms=android,ios .

Note: if you need for specific org the follow the instruction below

flutter create --platforms=android,ios  --org com.binaryboots .

4. Generate App Icons (Optional but recommended for new builds):

dart run flutter_launcher_icons

android Icons:

# Copy android Default icons
ICONS="App Store/android_images"
DEST="android/app/src/main"

cp -R "$ICONS/res" "$DEST/res"

iOS Icons:

Important: iOS App Store rejects icons that contain an alpha channel (transparency). After copying, run the sips command below to strip the alpha channel from all icons.

# Copy iOS Default icons
ICONS="App Store/bitSwitchIcon_v1 Exports"
DEST="ios/Runner/Assets.xcassets/AppIcon.appiconset"

cp "$ICONS/bitSwitchIcon_v1-iOS-Default-1024x1024@1x.png" "$DEST/Icon-App-1024x1024@1x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-20x20@2x.png" "$DEST/Icon-App-20x20@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-20x20@3x.png" "$DEST/Icon-App-20x20@3x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-29x29@2x.png" "$DEST/Icon-App-29x29@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-29x29@3x.png" "$DEST/Icon-App-29x29@3x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-38x38@2x.png" "$DEST/Icon-App-38x38@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-38x38@3x.png" "$DEST/Icon-App-38x38@3x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-40x40@2x.png" "$DEST/Icon-App-40x40@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-40x40@3x.png" "$DEST/Icon-App-40x40@3x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-60x60@2x.png" "$DEST/Icon-App-60x60@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-60x60@3x.png" "$DEST/Icon-App-60x60@3x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-64x64@2x.png" "$DEST/Icon-App-64x64@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-64x64@3x.png" "$DEST/Icon-App-64x64@3x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-68x68@2x.png" "$DEST/Icon-App-68x68@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-76x76@2x.png" "$DEST/Icon-App-76x76@2x.png"
cp "$ICONS/bitSwitchIcon_v1-iOS-Default-83.5x83.5@2x.png" "$DEST/Icon-App-83.5x83.5@2x.png"

# Remove alpha channel from all icons (required by App Store)
for icon in "$DEST"/*.png; do
  sips -s format jpeg -s formatOptions 100 "$icon" --out "$icon.jpg"
  sips -s format png "$icon.jpg" --out "$icon"
  rm "$icon.jpg"
done

5. Run the app:

# For iOS
flutter run -d ios

# For Android
flutter run -d android

# iOS
flutter build ios --release

# Android
flutter build apk --release

flutter test --coverage

genhtml coverage/lcov.info --output=coverage/html

open coverage/html/index.html

brew install lcov

The app follows a clean architecture pattern with clear separation of concerns:

lib/
├── core/                    # Core utilities
│   ├── constants.dart       # App constants
│   ├── exceptions.dart      # Custom exceptions
│   ├── soap_client.dart     # SOAP/HTTP client
│   └── ssdp_client.dart     # SSDP discovery client
├── models/                  # Data models
│   ├── wemo_device.dart     # Device model
│   └── device_state.dart    # State model
├── services/                # Business logic
│   ├── device_discovery_service.dart
│   └── device_control_service.dart
├── providers/               # State management
│   └── device_provider.dart
├── ui/
│   ├── screens/            # App screens
│   │   ├── home_screen.dart
│   │   ├── device_detail_screen.dart
│   │   └── settings_screen.dart
│   └── widgets/            # Reusable widgets
│       ├── device_card.dart
│       ├── power_button.dart
│       ├── brightness_slider.dart
│       └── insight_stats.dart
└── main.dart               # App entry point

The app uses SSDP (Simple Service Discovery Protocol) to find Wemo devices:

1. Sends M-SEARCH multicast to 239.255.255.250:1900
2. Listens for responses from Belkin devices
3. Fetches device info from http://<device-ip>:49153/setup.xml

Control commands are sent via SOAP over HTTP:

• Endpoint: http://<device-ip>:49153/upnp/control/basicevent1
• Actions: GetBinaryState, SetBinaryState
• Service Type: urn:Belkin:service:basicevent:1

• The mobile device must be on the same local network as the Wemo devices
• UDP multicast must be allowed on the network
• HTTP traffic to device ports (49152-49159) must not be blocked

1. Ensure your phone is on the same WiFi network as your Wemo devices
2. Check that your router allows UDP multicast
3. Try manually scanning using the refresh button
4. Verify devices are powered on and connected to WiFi

1. Some routers block local network access - check your router settings
2. On iOS, ensure "Local Network" permission is granted in Settings
3. Try power cycling the Wemo device

• Contribute! I'll be happy to accept pull requests!
• Bug hunting! Report them!
• Feature request? Please let me know by filling an issue!
• Star this project on GitHub.

Contributions are welcome! Please feel free to submit a Pull Request.

This project is open source and available under the MIT License.

• Inspired by pywemo Python library
• Built with Flutter