Arduino Volume

 #include <Keyboard.h>
 //Knob
 #define knobA 16
 #define knobB 14
 //Knob Clicker
 #define knobClick 10
 //Right Keys
 #define rightBottom 18
 #define rightMiddle 15
 #define rightTop 19
 //Left Keys
 #define leftBottom 9
 #define leftMiddle 8
 #define leftTop 7

 int counter = 0;
 int counterlast = 0;

 int aState;
 int aLastState;

 int clickPressed;
 int clickPressedLast;

 //Left Keys
 int lBottomPressed;
 int lBottomPressedLast;

 int lMiddlePressed;
 int lMiddlePressedLast;

 int lTopPressed;
 int lTopPressedLast;

 //Right Keys
 int rBottomPressed;
 int rBottomPressedLast;

 int rMiddlePressed;
 int rMiddlePressedLast;

 int rTopPressed;
 int rTopPressedLast;

 //Keypress bools
 boolean knobClicked;

 boolean lBottom;
 boolean lMiddle;
 boolean lTop;

 boolean rBottom;
 boolean rMiddle;
 boolean rTop;

 void setup() {
   //Knob
   pinMode (knobA,INPUT);
   pinMode (knobB,INPUT);
   //Knob Clicker
   pinMode (knobClick, INPUT_PULLUP);
   //Right Keys
   pinMode (rightBottom, INPUT_PULLUP);
   pinMode (rightMiddle, INPUT_PULLUP);
   pinMode (rightTop, INPUT_PULLUP);
   //Left Keys
   pinMode (leftBottom, INPUT_PULLUP);
   pinMode (leftMiddle, INPUT_PULLUP);
   pinMode (leftTop, INPUT_PULLUP);

   Keyboard.begin();
   aLastState = digitalRead(knobA);
   clickPressedLast = digitalRead(knobClick);
   //Left Keys
   lBottomPressedLast = digitalRead(leftBottom);
   lMiddlePressedLast = digitalRead(leftMiddle);
   lTopPressedLast = digitalRead(leftTop);
   //Right Keys
   rBottomPressedLast = digitalRead(rightBottom);
   rMiddlePressedLast = digitalRead(rightMiddle);
   rTopPressedLast = digitalRead(rightTop);

   //Make sure to set keypress bools to false to avoid inverted key detection
   clickPressed = false;
   //Left Keys
   lBottom = false;
   lMiddle = false;
   lTop = false;
   //Right Keys
   rBottom = false;
   rMiddle = false;
   rTop = false;

 }
 void loop() {

   //Read state of pins
   //Rotary Encoder
   aState = digitalRead(knobA);
   clickPressed = digitalRead(knobClick);
   //Left Keys
   lBottomPressed = digitalRead(leftBottom);
   lMiddlePressed = digitalRead(leftMiddle);
   lTopPressed = digitalRead(leftTop);
   //Right Keys
   rBottomPressed = digitalRead(rightBottom);
   rMiddlePressed = digitalRead(rightMiddle);
   rTopPressed = digitalRead(rightTop);

   //Decode rotary encoder
   if (aState != aLastState){
     if (digitalRead(knobB) != aState) {
       counter ++;
     } else {
       counter --;
     }

     if (counter < counterlast){
       Remote.decrease();
     }

     if (counter > counterlast){
       Remote.increase();
     }
     counterlast = counter;
   }

   //Check for button presses, set bool, do stuff
   if (lBottomPressed != lBottomPressedLast){ if (digitalRead(leftBottom) != lBottomPressed) { }lBottom = !lBottom;
   if (lBottom == true) {
     Remote.previous();
   }else{

     }
   }

   if (lMiddlePressed != lMiddlePressedLast){ if (digitalRead(leftMiddle) != lMiddlePressed) { } lMiddle = !lMiddle;
   if (lMiddle == true) {
     Keyboard.press(KEY_LEFT_CTRL);
     Keyboard.press(KEY_RIGHT_SHIFT);
     Keyboard.press(KEY_F12);
   }else{
     Keyboard.release(KEY_LEFT_CTRL);
     Keyboard.release(KEY_RIGHT_SHIFT);
     Keyboard.release(KEY_F12);
     }
   }

   if (lTopPressed != lTopPressedLast){ if (digitalRead(leftTop) != lTopPressed) { } lTop = !lTop;
   if (lTop == true) {
     Keyboard.release(KEY_LEFT_CTRL);
     Keyboard.press(KEY_RIGHT_SHIFT);
     Keyboard.press(KEY_F11);
   }else{
     Keyboard.release(KEY_LEFT_CTRL);
     Keyboard.release(KEY_RIGHT_SHIFT);
     Keyboard.release(KEY_F11);
     }
   }

   if (rBottomPressed != rBottomPressedLast){ if (digitalRead(rightBottom) != rBottomPressed) { } rBottom = !rBottom;
   if (rBottom == true) {
     Keyboard.press(KEY_LEFT_CTRL);
     Keyboard.press(KEY_RIGHT_SHIFT);
     Keyboard.press(KEY_F10);
   }else{
     Keyboard.release(KEY_LEFT_CTRL);
     Keyboard.release(KEY_RIGHT_SHIFT);
     Keyboard.release(KEY_F10);
     }
   }

   if (rMiddlePressed != rMiddlePressedLast){ if (digitalRead(rightMiddle) != rMiddlePressed) { } rMiddle = !rMiddle;
   if (rMiddle == true) {
     Remote.next();
   }else{

     }
   }

   if (rTopPressed != rTopPressedLast){ if (digitalRead(rightTop) != rTopPressed) { } rTop = !rTop;
   if (rTop == true) {
     Keyboard.press(KEY_LEFT_CTRL);
     Keyboard.press(KEY_RIGHT_SHIFT);
     Keyboard.press(KEY_F9);
   }else{
     Keyboard.release(KEY_LEFT_CTRL);
     Keyboard.release(KEY_RIGHT_SHIFT);
     Keyboard.release(KEY_F9);
     }
   }

   if (clickPressed != clickPressedLast){ if (digitalRead(knobClick) != clickPressed) { } knobClicked = !knobClicked;
   if (knobClicked == true) {
     Remote.play();
   }else{

     }
   }


   //Reset denoising values every loop
   aLastState = aState;

   clickPressedLast = clickPressed;

   lBottomPressedLast = lBottomPressed;
   lMiddlePressedLast = lMiddlePressed;
   lTopPressedLast = lTopPressed;

   rBottomPressedLast = rBottomPressed;
   rMiddlePressedLast = rMiddlePressed;
   rTopPressedLast = rTopPressed;
 }