Concept:
This project involves building a radar system using an Arduino, an ultrasonic sensor, and a joystick or buttons for control. The sensor data will be sent to p5.js, which will visualize the readings on a radar-like display, allowing you to detect objects in the surrounding environment.
Components:
- Arduino: Controls the ultrasonic sensor and reads input from the joystick/ buttons.
- Ultrasonic Sensor: Emits ultrasonic pulses and measures the time it takes for the echo to return, determining the distance to objects.
- Joystick/Buttons: Provides input for controlling the servo motor that rotates the ultrasonic sensor.
- Servo Motor: Rotates the ultrasonic sensor to scan the environment.
- Computer with p5.js: Receives data from the Arduino and generates the radar visualization.
Implementation:
- Hardware Setup:
- Connect the ultrasonic sensor to the Arduino.
- Connect the servo motor to the Arduino.
- Connect the joystick/buttons to the Arduino.
- Arduino Code:
- Initialize the sensor, servo, and joystick/buttons.
- In the loop function:
- Read the joystick/button values to determine the desired rotation angle for the servo.
- Rotate the servo to the specified angle.
- Trigger the ultrasonic sensor and measure the distance to the nearest object.
- Send the distance and angle data to the computer via serial communication.
- Ensure wires connecting the sensor cannot get tangled.
- p5.js Sketch:
- Establish serial communication with the Arduino.
- Receive distance and angle data from the Arduino.
- Create a radar-like display:
- Draw a circular background representing the scanning area.
- Convert the distance and angle data to Cartesian coordinates (x, y) on the display.
- Draw points or shapes at the calculated coordinates to represent the detected objects.
- Implement features like:
- Different colors or sizes for objects based on distance.
- Trail effect to visualize the movement of objects.
- Numerical distance display.
Possible Additional Features:
- Multiple Sensors: Use multiple ultrasonic sensors for wider coverage.
- Sound Effects: Play beeps or tones that vary in pitch or frequency based on the distance to objects.
- Object Tracking: Implement an algorithm to track the movement of objects over time.
Challenges and Considerations:
- Sensor Accuracy and Noise: Ultrasonic sensors can be affected by environmental factors and may require calibration.
- Visualization Design: Create a clear and intuitive radar display that effectively represents the sensor data.