 #define NUMBER_OF_BUTTONS 8
 
 // Define digital pins for the buttons
-const byte BUTTON_PINS[] = {0, 1, 2, 3, 13, 16, 17, 18};
+const byte BUTTON_PINS[] = {0, 1, 2, 3, 7, 8, 20, 21};
 
 // Initialize button objects
 Bounce buttons[NUMBER_OF_BUTTONS] = {

};

// Define PWM pins for the RGB LED
const byte RGB_RED = 4;
const byte RGB_GREEN = 5;
const byte RGB_BLUE = 23;

// The Piezo buzzer sits in this PWM pin
const byte BUZZER_PIN = 12;

/**
 * Setup function - run once on power-on

 * Custom-built USB peripheral with eight buttons, a RGB LED and a Piezo speaker.
 * Based on the Teensy 2 microcontroller - http://www.pjrc.com/teensy
 * 
 * Created as a birthday present to Waher (http://waher.net/about-waher-net)
 * 
 * @author David <david@sqroot.eu> 2013
 * 
