The Alley Radar project is a final assignment for the Digital Systems course. It leverages C programming and embedded systems concepts to control a radar-like system using ultrasonic sensors and servomotors. The radar scans an area to detect objects and measure distances, displaying the results through a console or external interface.
This project demonstrates integration between hardware components and software, focusing on sensor control, real-time data processing, and motor actuation.
- Ultrasonic Distance Measurement: Uses an ultrasonic sensor to detect object distances in centimeters.
- Servo Motor Control: Rotates the servo to predefined angles for scanning the area.
- Real-Time Scanning: Continuously collects and displays data during operation.
- Console Output: Displays distance readings and servo angles in a user-friendly format.
- Modular Functions:
- setupServo(): Configures PWM for the servo motor.
- setupUltrasonicSensor(): Prepares the GPIO pins for the ultrasonic sensor.
- moveServo(angle): Adjusts the servo to a specified angle.
- readUltrasonicDistance(): Reads the distance to the nearest object using the sensor.
PUCP_2024-2_Alley_Radar/ ├── radar.c # Main program logic in C ├── index.html # Optional front-end interface for displaying data ├── styles.css # Styling for the front-end (if applicable) └── images/ # Images for documentation or visualization
- Hardware:
- Ultrasonic sensor (e.g., HC-SR04)
- Servo motor (e.g., SG90)
- Microcontroller (e.g., TM4C123 series)
- Software:
- GCC Compiler for C
- UART interface or other debugging tools
- Connect the ultrasonic sensor's TRIGGER and ECHO pins to GPIO pins on the microcontroller (e.g., PE1 and PE2).
- Connect the servo motor to a PWM-capable GPIO pin (e.g., PB6).
- Ensure the microcontroller is powered and properly grounded with the sensors and actuators.
- Clone the repository:
git clone https://github.com/Darkas-Overgold/PUCP_2024-2_Alley_Radar.git cd PUCP_2024-2_Alley_Radar - Compile the program:
gcc radar.c -o radar
- Flash the compiled binary onto the microcontroller (e.g., using a JTAG programmer).
Usage
-
Power on the microcontroller with the radar hardware connected.
-
The servo will start rotating in 10° increments, covering a range of 0° to 180°.
-
At each step, the ultrasonic sensor will measure the distance to the nearest object and display the results in the console.
-
Example output:
Angle: 0° Distance: 50 cm Angle: 10° Distance: 47 cm ...
Future Improvements
Integration with a web-based interface for real-time visualization.
Enhanced resolution by increasing the number of servo steps.
Support for multiple ultrasonic sensors to expand the scanning range.
Contributions
Contributions are welcome! Please fork the repository and submit a pull request with your enhancements or fixes.
License
This project is open-source and available under the MIT License. See the LICENSE file for more details.