Arduino websocket gamepad with Noduino

gamepad.js

// noduino/examples/gamepad.js

// npm install --save socket.io-client
// cd noduino/examples
// node gamepad.js

var requirejs = require('requirejs');
var socket = require('socket.io-client')('http://localhost:3000');

requirejs.config({nodeRequire: require});

requirejs(['../public/scripts/libs/Noduino', '../public/scripts/libs/Noduino.Serial', '../public/scripts/libs/Logger'], function (NoduinoObj, NoduinoConnector, Logger) {
    
  var Noduino = new NoduinoObj({'debug': false}, NoduinoConnector, Logger);
  Noduino.connect(function(err, board) {
    if (err) { return console.log(err); }

    var board_serial = board.c.boards[0].serial.path;
    socket.emit('controller','Arduino: '+board_serial);
    
    var led_4;
    board.withLED({pin: 4}, function(err, LED) {
      if (err) { return console.log(err); }
      led_4 = LED;
      led_4.on('on',function(){
        setTimeout(function () {
          led_4.setOff();
        }, 250);
      });
    });

    board.withButton({pin: 3}, function(err, Button) {
      if (err) { return console.log(err); }
      Button.on('push', function() {
        console.log('Button left');
        socket.emit('controls','turn left');
        led_4.setOn();
      });
    });

    var led_7;
    board.withLED({pin: 7}, function(err, LED) {
      if (err) { return console.log(err); }
      led_7 = LED;
      led_7.on('on',function(){
        setTimeout(function () {
          led_7.setOff();
        }, 250);
      });
    });

    board.withButton({pin: 6}, function(err, Button) {
      if (err) { return console.log(err); }
      Button.on('push', function() {
        console.log('Button right');
        socket.emit('controls','turn right');
        led_7.setOn();
      });
    });

    socket.on('you won', function(msg){
      console.log("YOU WON");
      setInterval(function () {
        led_7.blink(250);
        led_4.blink(250);
      }, 500);
    });

  });
});