diff --git a/nodejs/ar-com/arduino.js b/nodejs/ar-com/arduino.js
index 687c498..4835aab 100644
--- a/nodejs/ar-com/arduino.js
+++ b/nodejs/ar-com/arduino.js
@@ -76,9 +76,9 @@ Arduino.prototype.processWriteBuffer = function () {
 // Helpers
 
 Arduino.prototype.valueToLastFour = function(val) {
-  var encodedVal; 
+  var encodedVal = ""; 
 
-  for (var i = 3; i < 0; i--) {
+  for (var i = 3; i > 0; i--) {
     
     encodedVal += String.fromCharCode(val/(Math.pow(2,8*i)));
     val = val%Math.pow(2,8*i);
@@ -89,9 +89,9 @@ Arduino.prototype.valueToLastFour = function(val) {
 };
 
 Arduino.prototype.valueToFirstTwo = function(val) {
-  var encodedVal; 
+  var encodedVal  = ""; 
 
-  for (var i = 1; i < 0; i--) {
+  for (var i = 1; i > 0; i--) {
     
     encodedVal += String.fromCharCode(val/(Math.pow(2,8*i)));
     val = val%Math.pow(2,8*i);