let gravity;

let position;

let acceleration;

let wind = 0;

let drag = 0.99;

let mass = 50;

let bounceLED = false;

​

function setup() {

  createCanvas(640, 360);

  noFill();

  position = createVector(width/2, 0);

  velocity = createVector(0, 0);

  acceleration = createVector(0, 0);

  gravity = createVector(0, 0.5 * mass);

}

​

function draw() {

  background(255);

  applyForce(createVector(wind, 0)); // Apply wind force

  applyForce(gravity);

  velocity.add(acceleration);

  velocity.mult(drag);

  position.add(velocity);

  acceleration.mult(0);

  ellipse(position.x, position.y, mass, mass);

  if (position.y > height - mass / 2) {

    velocity.y *= -0.9;  // A little dampening when hitting the bottom

    position.y = height - mass / 2;

    if (!bounceLED) {

      sendBounceSignal(); // Send signal to Arduino when ball bounces

      bounceLED = true;

    }

  } else {

    bounceLED = false;

  }

}

​

function applyForce(force) {

  // Newton's 2nd law: F = M * A

  // or A = F / M

  let f = p5.Vector.div(force, mass);

  acceleration.add(f);

}

​

function sendBounceSignal() {

  // Send signal to Arduino to light up LED

  // You can send any character or value to Arduino

  // Here, I'm sending '1' to indicate LED on

  serialWrite('1');

}

​

// Function to send data to Arduino via serial port

function serialWrite(data) {

  // You can implement this function using the p5.serialport library

  // which allows communication between p5.js and Arduino

  // Check the documentation for usage: https://github.com/p5-serial/p5.serialport

}

​

// Function to receive data from Arduino via serial port

function serialEvent() {

  // You can implement this function if you need to receive data from Arduino

}

​