Obstacle Avoidance and Bluetooth Control Car

Abstract: Robotics and autonomous systems play an increasingly vital role in modern technology, supporting fields from industrial automation to personal assistance. A key requirement for any mobile robot is the ability to navigate safely while being controllable by a user. Traditional remote-controlled vehicles offer manual control but lack environmental awareness, making them prone to collisions. This project presents a dual-function robotic car that utilizes an Arduino microcontroller for both Bluetooth-based manual operation and ultrasonic sensor–based autonomous navigation. The system integrates an HC-SR04 ultrasonic sensor for obstacle detection and an HC-05 Bluetooth module for remote communication, operating in two modes: autonomous (self-driving) and manual (user-controlled via a smartphone app). The main objective is to design a low-cost and versatile robotic platform that demonstrates essential embedded system concepts, wireless communication, and sensor integration. The system serves as an educational model, providing a strong foundation for advanced robotics applications such as IoT integration and path planning...