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Key Features

The Object Detection Car Controlled by Android Application offers a robust set of functionalities, making it a versatile platform for robotic navigation. The following features, as outlined in the project documentation, highlight its capabilities:

  • Obstacle Detection:

    • Utilizes the HC-SR04 ultrasonic sensor to detect objects within 60 cm.
    • Ensures safe navigation in complex environments.

  • Automatic Collision Avoidance:

    • When an obstacle is detected (< 60 cm), the car reverses for 500 ms and stops.
    • Overrides manual commands to prioritize safety.

  • Wi-Fi Remote Control:

    • Controlled via an Android app connected to the ESP32’s Wi-Fi Access Point (SSID: Savana Node 01, IP: 192.168.4.1).
    • Supports real-time command execution with minimal latency.

  • Real-Time Response:

    • HTTP GET requests (e.g., http://192.168.4.1/forward) are processed instantly.
    • Sensor readings are updated every second for timely avoidance.

  • User-Friendly Interface:

    • Android app features intuitive buttons for movement (forward, backward, left, right, stop).
    • Firebase authentication ensures secure, single-user access.
    • Aplication Image.
    • Car Images.
    • Demo Video.

  • Cost-Effective Design:

    • Built with affordable components (total cost ~INR 1,960).
    • Scalable for educational and commercial applications.

  • LED Feedback:

    • Two LEDs (pins 14, 27) indicate movement:
      • Both on: Backward (obstacle avoidance).
      • Left LED: Left turn.
      • Right LED: Right turn.
      • Off: Forward or stop.

  • Firebase Integration:

    • Single-user authentication prevents conflicting controls.
    • Enhances security in shared environments.

  • Robust Hardware:

    • ESP32 microcontroller for reliable Wi-Fi and processing.
    • L293D motor driver for precise motor control.
    • 7.4V Li-ion battery with LM2596 regulator for stable power.

These features make the car suitable for applications like automated delivery, warehouse navigation, and security patrolling, with potential for further enhancements (see Future Scope).