ANA - EEG Focus Monitor

A Flutter app that connects to state-of-the-art biosignal patch via Bluetooth to monitor focus, stress, and mental state in real-time.

🧠 What is ANA?

ANA is a wireless EEG monitoring system that turns brain activity into actionable insights. Think of it as a fitness tracker for your mind - it measures focus levels, stress, and mental fatigue to help you optimize your cognitive performance.

📱 Features

• Real-time EEG monitoring via Bluetooth Low Energy
• Live focus tracking with visual feedback
• Stress level detection using brain wave analysis
• Session recording and playback
• Clean, intuitive interface designed for daily use

🚀 Quick Start

Prerequisites

• Flutter SDK (3.16+)
• Android Studio or Xcode
• Compatible EEG device (OpenBCI Cyton, nRF52832 prototype)

Installation

# Clone the repository
git clone https://github.com/your-username/ana-app.git
cd ana_eeg_sticker

# Install dependencies
flutter pub get

# Run the app
flutter run

📦 Dependencies

dependencies:
  flutter_blue_plus: ^1.12.0  # BLE connectivity
  fl_chart: ^0.65.0           # Real-time charts
  riverpod: ^2.4.0            # State management
  hive: ^2.2.3                # Local storage

🔧 Usage

1. Connect Device: Turn on your EEG device and tap "Scan" in the app
2. Start Session: Once connected, press "Start Monitoring"
3. View Live Data: Watch your brain waves and focus metrics in real-time
4. Review Sessions: Check your focus patterns and improvements over time

📊 How It Works

EEG Sensor → Bluetooth → Signal Processing → Algorithms (e.g Focus) → Live Display

The app does things like: filter EEG signals (1-40 Hz), extracts alpha and beta wave features, and calculates a real-time focus score based on established neuroscience research.

🧪 Signal Processing

• Bandpass filtering: Removes noise and isolates brain waves
• Feature extraction: Alpha (8-12 Hz) and Beta (13-30 Hz) power
• Focus metric: Alpha/Beta ratio with smoothing algorithm
• Real-time processing: <100ms latency for immediate feedback

🛠️ Development

Project Structure

lib/
├── main.dart              # App entry point
├── models/                # Data structures
├── services/              # BLE and signal processing
├── screens/               # UI screens
└── widgets/               # Reusable components

Running Tests

flutter test

Building for Release

# Android
flutter build apk --release

# iOS
flutter build ios --release

📱 Screenshots

[Add screenshots of your app here]

🎯 Roadmap

• BLE connectivity
• Real-time EEG display
• Basic focus metrics
• Advanced signal processing
• Cloud data sync
• Multi-device support
• Meditation guidance

🤝 Contributing

We're a small team building this in the open. Feel free to:

• Report bugs via GitHub Issues
• Suggest features
• Submit pull requests

📄 License

MIT License - see LICENSE file for details.

🔗 Hardware Compatibility

Tested Devices:

• OpenBCI Cyton Board
• Custom nRF52832 prototype

BLE Requirements:

• Bluetooth 4.0+
• Custom EEG data characteristic
• Sampling rate: 250+ Hz

📧 Contact

For questions about the project or collaboration opportunities, create an issue or reach out via GitHub.

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Built with ❤️ for better brain health and cognitive performance.