   //button on pin 11, debounce for DEBOUNCE_TIME
   Switch rainbowButton(11, DEBOUNCE_TIME);
   
-  /* Buttons */
+  // button on pin 12 - toggle spin on/off
   Switch toggleSpinButton(12, DEBOUNCE_TIME);
   
   /* Potentiometers on analog inupts*/

     }
  }
  
  void updateRainbowButton() {
     rainbowButton.update();
     if (rainbowButton.closedThisUpdate()) {

    // update the spin knob before the spin toggle, just in case they both change on the same update. Want the button to override */
    updateSpinKnob();
    updateToggleSpinButton();
    
    // update the increment/decrement buttons
    updateIncrementButtons();
    
    // update the other pots
    updateBlinkKnob();
