ADA - AI Health Assistant

A voice-enabled AI companion designed for elderly care, providing continuous voice conversations with automatic check-ins and family contact access.

Features

• 🎤 Continuous Voice Conversations: Fully hands-free - just talk naturally, no button pressing
• 🤖 AI-Powered: Uses OpenAI GPT-4o-mini for fast, emotional, caring responses
• 💬 Automatic Logging: Conversations saved to MongoDB + text files
• 👥 Family Contacts: Quick call buttons for Anthony (Son) and David (Daughter)
• 🎯 Elderly-Focused: Personalized for Jenny with emotional warmth and care
• 🌐 Elder-Friendly UI: Large buttons, high contrast, simple design

Setup Instructions

1. Install Dependencies

npm install

2. Configure OpenAI API Key

Create a .env file in the root directory:

cp .env.example .env

Then edit .env and add your OpenAI API key:

OPENAI_API_KEY=your_actual_api_key_here
PORT=3000

You can get an API key from OpenAI's website.

3. Start the Server

npm start

Or for development with auto-reload:

npm run dev

4. Open in Browser

Navigate to http://localhost:3000 in your web browser.

How to Use

1. Click "Call ADA" once to start
2. ADA greets: "Hey Jenny, I hope you are doing great today."
3. Just talk naturally - no button pressing needed
4. After 5 seconds of silence, your message auto-sends
5. ADA responds with voice automatically
6. Recording auto-resumes - continue talking!
7. Click "Call ADA" again to end the conversation

Family Contacts:

• Tap "Anthony" or "David" buttons to call them directly
• Calls open your phone dialer with their number pre-filled

Project Structure

hackaton/
├── server.js              # Express backend server
├── package.json           # Node.js dependencies
├── .env                   # Environment variables (create this)
├── public/
│   ├── index.html        # Frontend HTML
│   ├── style.css         # Styling
│   └── app.js            # Frontend JavaScript
└── conversations/         # Auto-generated conversation logs

Conversation Logs

All conversations are saved to text files in the conversations/ directory, organized by date. Each file contains:

• Timestamp of each exchange
• User's spoken message
• ADA's response

Key Features

• Silence Detection: Auto-sends after 5 seconds of silence (handles background noise)
• Continuous Flow: Talk → Pause → Hear Response → Talk Again (fully automatic)
• Optimized Speed: ~0.8-2.5 second response times
• Graceful Fallback: Works even if MongoDB is unavailable

Documentation

• COMPLETE_SYSTEM_SUMMARY.md - Full system overview and architecture
• DEPLOYMENT_GUIDE.md - How to deploy to Vercel/Render/ngrok
• MONGODB_SETUP.md - Mo ngoDB configuration
• CHATGPT_PROMPT_PREDEFINED_QUESTIONS.md - Prompt for adding medication/PT reminders

• Microphone not working: Check browser permissions and allow microphone access
• API errors: Verify your OpenAI API key is correct and has sufficient credits
• Port already in use: Change the PORT in .env file