Arduino radar / 180° ultrasonic scanner using HC-SR04 + servo — Arduino sketch + Processing visualization
Project Overview: This project involves creating a functional radar system using an ultrasonic sensor, Arduino Uno, and a breadboard. The radar is capable of detecting objects within a specified range and displaying their positions on a graphical interface. It is a cost-effective way to learn about radar technology and its basic principles.
Components Required: -Ultrasonic Sensor (e.g., HC-SR04): Measures the distance to objects by emitting ultrasonic waves and detecting the reflected signals. -Arduino Uno: Acts as the microcontroller to process data and control the system. -Servo Motor: Rotates the ultrasonic sensor to cover a wide area for scanning. -Breadboard and Jumper Wires: Used for creating the circuit connections. -Computer and Software: To visualize the radar data on a graphical interface, like Processing or Python.
Working Principle:
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Object Detection: The ultrasonic sensor emits sound waves and calculates the time taken for the echo to return after bouncing off an object.
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Rotation and Scanning: A servo motor rotates the sensor in a predefined angle range (e.g., 0° to 180°). Distance data is collected at each angle to map the surroundings.
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Data Visualization: The Arduino sends the distance and angle data to a computer via serial communication. The data is displayed on a radar-like interface, showing the positions of detected objects.