Motion based PuckJS Media remote control

Hi, I have a few puckjs and am looking at how make them into useful household devices. I am currently trying to build a simple to use HID BLE media remote control

Features

1. Turn the puck clockwise to raise the volume
   
2. Tune the puck anticlockwise to turn down the volume
   
3. Tune the puck on its back (black side facing up) then turn to change the channel or track
   

4. Click to pause and resume (or Mute /UnMute)

   console.log('Compass heading test');
   Puck.magOn();
   Puck.on('mag', function(c) {
   console.log('Raw mag data: ',c);
   var xGa = c.x * 0.48828125;
   var yGa = c.y * 0.48828125;
   var d = 0;
   if (xGa == 0) {
   if ( yGa <= 0) {
     d = 90;
   } else {
     d = 0;
   }
   } else {
   console.log('Corrected X,YL ',xGa,yGa);
   d = Math.atan(yGa/xGa)*(180/Math.PI);
   }
   if (d > 360) {
   d = d - 360; 
   }
   if (d < 0) {
   d = d + 360;
   }
   console.log('Direction: ', d);
   });
   

My first attempt is to convert mag x, y, z reading to a compass heading to then take changes to measure left and right rotation. I have completely failed to get this to work any idea what I am doing wrong?