• Ok, looks like that wasn't it - there were a few issues but the main one you hit was that you were just calling Puck.connect with no arguments when the button was clicked, when you just wanted to call your code.

    Try this:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
    </head>
    <body>
      <button id="btnId">Go</button>
      <script src="https://www.puck-js.com/puck.js"></­script>
      <script>
        var connection;
        document.getElementById("btnId").addEven­tListener("click", function () {
            if (connection) {
                connection.close();
                connection = undefined;
            }
            Puck.connect(function (c) {
                if (!c) {
                    alert("Couldn't connect!");
                    return;
                }
                console.log("Connected - uploading...");
                connection = c;
                connection.on("data", function(d) {
                  console.log("Received "+JSON.stringify(d));
                });
                connection.write("reset();\n", function () {
                    // Wait for it to reset itself
                    setTimeout(function () {
                        connection.write(`\x10{
    var zero = Puck.mag();
    var rep = 0;
    function onMag(p) {
      p.x -= zero.x;
      p.y -= zero.y;
      p.z -= zero.z;
      var s = Math.sqrt(p.x * p.x + p.y * p.y + p.z * p.z);
      if (!Boolean(s < 1000)) {
        digitalPulse(LED2, 1, 1000);
        rep++;
        Bluetooth.println(rep);
      }
    }
    Puck.on('mag', onMag);
    Puck.magOn();}\n`,
                            function () { console.log("Ready..."); });
                    }, 1500);
                });
            });
        });
      </script>
    </body>
    </html>
    
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