​

function setup() {

  createCanvas(255,255);

  textSize(18);

}

​

function draw() {

  background(0,0,mouseX);

  fill(255);

​

  if (!serialActive) {

    text("Press Space Bar to select Serial Port", 20, 30);

  } else {

    text("Connected", 20, 30);

​

    text(mouseX, 20, 50);

​

  }

      right = mouseX;

}

​

function keyPressed() {

  if (key == " ") {

    // important to have in order to start the serial connection!!

    setUpSerial();

  }

}

​

// This function will be called by the web-serial library

// with each new *line* of data. The serial library reads

// the data until the newline and then gives it to us through

// this callback function

function readSerial(data) {

    //////////////////////////////////

    //SEND TO ARDUINO HERE (handshake)

    //////////////////////////////////

    let sendToArduino = right + "\n";

    writeSerial(sendToArduino);

}

​