🎙️ Vachak - A Voice Assistant for Visually Impaired Users

Empowering the visually impaired with voice-first mobile interaction.

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📱 About the Project

Vachak is an Android-based voice assistant app developed to help visually impaired individuals interact with their smartphones hands-free. It allows users to set alarms, make calls, get weather updates, toggle the flashlight, and more — all through intuitive voice commands. By minimizing the need for visual interaction, Vachak aims to promote digital inclusion and independence.

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🚀 Features

• 🎤 Voice Recognition using Android's SpeechRecognizer
• 🌦️ Real-Time Weather Updates using OpenWeatherMap API
• ⏰ Alarm Setup with voice input
• 📞 Call Helper for contact-based calling
• 🔦 Flashlight Control
• 🔊 Text-to-Speech feedback for all responses
• 📲 App Launcher to open apps with voice commands
• 🔔 Notification Reader (reads incoming messages and alerts)
• 🧠 NLP Intent Matcher for natural command understanding
• 🎛️ Modular and Extensible Design

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🛠️ Tech Stack

• Language: Java
• Platform: Android (API 21+)
• Speech Recognition: Android SpeechRecognizer
• TTS: Android TextToSpeech
• APIs: OpenWeatherMap API

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🧩 Architecture Overview

• MainActivity.java: Core voice listening loop and command handler
• SpeechListener.java: Handles wake word and real-time speech recognition
• WeatherHelper.java, CallHelper.java, FlashlightHelper.java: Functional modules
• NLPIntentMatcher.java: Maps speech to intents using simple rule-based logic

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📦 Installation

1. Clone this repository:

   git clone https://github.com/your-username/vachak-voice-assistant.git

2. Open in Android Studio.

3. Add your OpenWeatherMap API key in WeatherHelper.java.

4. Build & Run the project on a real Android device.

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📄 Prior Art & References

• Google Voice Access
• Android TalkBack

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🤝 Contributors

• Rupesh Kumar

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📜 License

This project is for educational and research purposes. Feel free to fork and build upon it with credit.

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