    (1) 
    As the system is intended to be battery powered, the recommendation 
    is to program Teensy as USB TYPE = NO USB and use for example 24MHz 
-   clock. These are set from Tools menu in Arduino/Teensyduino IDE:
-   Setting NO USB will require you to press the manual program button on 
-   Teensy to upload the code, but it will save a lot of power.
+   or 16 MHz clock. These are set from Tools menu in Arduino/Teensyduino 
+   IDE. Setting NO USB will require you to press the manual program button 
+   on Teensy to upload the code, but it will save a lot of power.
 
    (2)
    Additionally you can set all unused inputs as outputs, which

   LISTED IN InitialiseIO() FUNCTION. THE AUTHOR(S) TAKE NOT RESPONSIBILITY
   IF YOU MANAGE TO FRY/SHORT OUT A PIN OR YOUR TEENSY MICROCONTROLLER.
   -------------------------------------------------------------------------
*/

// used pin definitions, other than buttons

  // Connect to Bt module
  Serial1.begin(57600); // use same baud rate as you have set your BT modules
  Serial1.flush();

  // turn off teensy led
  digitalWriteFast(teensyLed, LOW);
}
  
void loop() {
