Puck.Js and integration with IoT and IFTTT

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•

Gordon

Here's a bit of code that'll do it - if you stick this on an HTTPS webpage then once connected, when you press the button it'll call IFTTT.

It even automatically loads the code onto the Puck for you:

<html>
 <head>
   <title>IFTTT Web Bluetooth Example</title>
 </head>
 <body>
  <pre id="log"></pre>
  <button>Click here to start</button><br/>
  <iframe id="ifttt" style="width:640px;height:32px"></iframe>
  <script src="https://www.puck-js.com/puck.js"></script>
  <script type="text/javascript">
    var button = document.getElementsByTagName('button')[0];
    var logelement = document.getElementById('log');
    var iftttRequests = 0;
    function log(txt) {
      logelement.innerHTML += txt+"\n";
    }

    function ifttt() {
      document.getElementById('ifttt').src = "https://maker.ifttt.com/trigger/puck_event/with/key/km.....Qv?"+iftttRequests;
      // ^^^^^^ Change the URL above
      iftttRequests++;
    }

    // Called when we get a line of data
    function onLine(v) {
      log("Received: "+JSON.stringify(v));
      if (v.indexOf("Pressed")>=0) {
        log("Calling IFTTT");
        ifttt();
      }
    }

    // When clicked, connect or disconnect
    var connection;
    button.addEventListener("click", function() {
      if (connection) {
        log("Closing connection");
        connection.close();
        connection = undefined;
      }
      log("Opening connection");
      Puck.connect(function(c) {
        if (!c) {
          log("Couldn't connect!");
          return;
        }
        log("Connecting...");
        connection = c;
        // Handle the data we get back, and call 'onLine'
        // whenever we get a line
        var buf = "";
        connection.on("data", function(d) {
          buf += d;
          var i = buf.indexOf("\n");
          while (i>=0) {
            onLine(buf.substr(0,i));
            buf = buf.substr(i+1);
            i = buf.indexOf("\n");
          }
        });
        // First, reset Puck.js
        connection.write("\x10reset();\n", function() {
          // Wait for it to reset itself
          setTimeout(function() {
            // Now tell it to write data on the current light level to Bluetooth 10 times a second
            connection.write("\x10setWatch(function(){Bluetooth.println('Pressed');},BTN,{repeat:true,debounce:50,edge:'rising'});\n",
              function() { log("Ready!"); });
          }, 1500);
        });
      });
    });
  </script>
 </body>
</html>

As @Ollie says, if you really want an internet connection it might be better to do something directly, but the above works well for tests.

Puck.Js and integration with IoT and IFTTT

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