fix some minor ar-com bugs

nodejs/ar-com/ir.js

@@ -4,9 +4,21 @@ var events = require('events'),
 var IR = function (arduino) {
   if(!arduino) {console.log("Arduino not set!");}
   this.arduino = arduino;
+
+  this.arduino.on('data', function (message) {
+    var m = message.slice(0, -1).split('::'),
+        err = null;
+
+    if (m.length != 3) {
+      return;
     }
 
-util.inherits(Sensor, events.EventEmitter);
+    this.emit('read', err, m);
+    
+  }.bind(this));
+}
+
+util.inherits(IR, events.EventEmitter);
 
 IR.prototype.send = function(type, len, val) {
   
@@ -20,18 +32,6 @@ IR.prototype.send = function(type, len, val) {
 
 IR.prototype.receive = function() {
 
-  this.board.on('data', function (message) {
-    var m = message.slice(0, -1).split('::'),
-        err = null;
-
-    if (m.length != 3) {
-      return;
-    }
-
-    this.emit('read', err, m);
-    
-  }.bind(this));
-
   this.arduino.write(new Buffer('Y0000000', 'ascii'));  
 
 };

nodejs/ar-com/sensor.js

@@ -6,7 +6,7 @@ var Sensor = function (arduino, pin) {
   this.arduino = arduino;
   this.pin = pin;
 
-  this.board.on('data', function (message) {
+  this.arduino.on('data', function (message) {
     var m = message.slice(0, -1).split('::'),
         err = null;
 
@@ -28,4 +28,4 @@ Sensor.prototype.trigger = function() {
 
 };
 
-module.exports = IR;
+module.exports = Sensor;