     if (!motor[motor_idx]->enabled()) {
       Serial.print("Arming motor ");
       Serial.println(motor_idx);
-      
       motor[motor_idx]->arm();
     }
   }

/**
 * Decays motor velocity exponentially in case of communications loss.
 */
void motorDecayLoop()
{
  // Only run while connected via USB.
  if (!adk.isReady()) {

/**
 * Reads from serial debugging console and attempts to execute commands.
 */
void serialConsoleLoop()
{
  // Index to last character in debug buffer.
  static size_t debug_buffer_idx = 0;
