Development of Ultrasonic Radar System for Object Detection Using PIC 16F877A

Ultrasonic radar represents a promising technology, offering reduced cost while combining efficiency and versatility. This project details the design and implementation of a radar system based on the PIC 16F877A microcontroller, capable of measuring both the distance and direction of objects in their environment. To achieve this, an ultrasonic sensor is used in combination with a stepper motor, enabling the system to scan a full 360° area. The collected data is then displayed in real-time on an LCD screen, providing clear and precise visualization of the information. The system also integrates LEDs that serve as visual indicators to signal the proximity of detected objects. When objects are at critical distances, a buzzer is activated to alert the user, adding an auditory dimension to the detection. This feature is particularly useful for applications requiring rapid response, such as surveillance, automotive, or navigation. Comprehensive tests were conducted to evaluate the system's performance. These tests included both stationary and moving targets, allowing for the verification of reliability and measurement accuracy under various conditions. The results showed that the distances measured by the system had minimal deviations from the actual distances, confirming the high precision of the device.