Formatted and Commented Code

Theremin/Theremin.ino

@@ -3,18 +3,16 @@
  *@lang C89 Based
  *@contact lunarised@outlook.com
  */
- int mode;
+int mode;
 void setup() {
-    pinMode(6, INPUT_PULLUP);
-    pinMode (13, OUTPUT);
-  pinMode(8, OUTPUT);
-  pinMode (7, INPUT_PULLUP);
-
-    pinMode(5, INPUT_PULLUP);
-    Serial.begin (9600);        //set up a serial connection with the computer
-
-  pinMode(11, OUTPUT);   //the trigger pin 
-  pinMode(12, INPUT);    //echo pin
+  pinMode(6, INPUT_PULLUP);		//Mode Select Pin
+  pinMode (13, OUTPUT);			//LED Indicator Pin
+  pinMode(8, OUTPUT);			//Speaker Pin
+  pinMode (7, INPUT_PULLUP);		//Play Pin
+  pinMode(5, INPUT_PULLUP);		//+Octave Play Pin
+  Serial.begin (9600);			//Set up a Serial Connection
+  pinMode(11, OUTPUT);   		//Trigger pin 
+  pinMode(12, INPUT);    		//Echo pin
 
 }
 
@@ -39,32 +37,37 @@ void loop() {
     Serial.print(note);      		//print frequency
     Serial.println(" hz");		//print units after frequency
     tone(8, note); 
-  
   }
   else{
     noTone(8);
   }
 }
+/*
+ * Method that uses an UltraSonic sensor to calculate a frequency
+ * @return A Frequency generated by a sensor
+ */
+float getNote(){
 
-
-float getNote()
-{
   float echoTime;
   float calculatedDistance;
   digitalWrite(11, HIGH);
   delayMicroseconds(20); 
   digitalWrite(11, LOW);
-
   echoTime = pulseIn(12, HIGH);                                       
-  calculatedDistance = echoTime / 8; 
-  calculatedDistance += 110;
-  if (calculatedDistance > 1760){ //git 
-
-    calculatedDistance = 1760;
+  calculatedDistance = echoTime / 8; 	//Change this value to decrease
+  					//the playing physical range
+  calculatedDistance += 110;		//Minimum value
+  if (calculatedDistance > 1760){ 	//Prevent high pitched sounds 
+    calculatedDistance = 1760;		//Maximum Value
   }
-
   return calculatedDistance;
 }
+
+/*
+ * Method which takes a note, and brings the note down to a correct pitch
+ * @param toTune	The Note in which you are autotuning
+ * @return		The Note that has now been autotuned
+ */
 float tune(float toTune){
   if (toTune> 523.75){ 			//C5
     return 523.75;