README.md

🤖 3-in-1 Multi-Mode Robot Car

A versatile robotic platform with Bluetooth, Obstacle Avoidance, and Human Following capabilities.

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📖 Table of Contents

• ✨ Features
• 📂 Project Structure
• 📱 Controller App
• 🛠️ Build Instructions & Diagram
• 📦 Releases & Downloads
• 📄 License

✨ Features

• 📱 Bluetooth Control: Drive the robot manually using the custom Android app.
• 🛡️ Obstacle Avoidance: Autonomous navigation avoiding collisions using ultrasonic and IR sensors.
• 🚶‍♂️ Human Following: Automatically detects and follows a person or object in front of it.

📂 Project Structure

This repository is organized logically for both the hardware source and the Android control layer:

├── AndroidApp/                             # Android Controller App source code (Android Studio Project)
├── ArduinoCode/                            # Arduino firmware and robot logic
├── diagrams/                               # Circuit diagram files (PNG + SVG)
├── BUILD_GUIDE.md                          # Setup and build instructions
├── INSTRUCTIONS.md                         # Detailed usage guide
├── LICENSE                                 # MIT License
└── README.md                               # This file

🔌 Circuit Diagram

The SVG version is available in the same folder for scalable viewing and editing.

📱 Controller App

The custom Android app is designed specifically for this robot but is highly versatile.

Note: The app can be used individually for other microcontrollers!

• It sends simple character commands via standard Serial over Bluetooth.
  • Examples: M for Manual mode, Y for Obstacle mode, Z for Follow mode.
• You can easily pair it with any HC-05 or HC-06 Bluetooth module connected to your own custom Arduino, ESP32, STM32, or Raspberry Pi Pico projects.

🛠️ Build Instructions & Diagram

For complete setup, wiring, formatting, and installation steps, please refer to the dedicated instructions file.

👉 Read the Full Build Instructions Here!

📦 Releases & Downloads

To download the compiled .apk for the Android App or grab the latest stable release of the hardware code, visit the Releases page.

👉 Download Latest Releases Here

📄 License

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