Doorbell

app.js

function send_pushover_notification() {

  var push = require( 'pushover-notifications' );

  var p = new push( {
      user: "xxxx",
      token: "xxxx"
  });

  var msg = {
      message: "Somebody is at the door!",
      title: "Doorbell",
      sound: 'pushover',
      priority: 1
  };

  p.send( msg, function( err, result ) {
      if ( err ) {
          return false;
      }

      if(result.status == 1) {
        return true;
      }
  });

  return false;
}

var dash_button = require('node-dash-button'),
    dash = dash_button('xx:xx:xx:xx:xx:xx'), //REPLACE WITH YOUR ADDRESS
    exec = require('child_process').exec;

dash.on('detected', function() {
    console.log('Button pushed!');

    send_pushover_notification();
});


console.log('Ready');