void getNumber(){
  scratch = "";    // clear scratch for a new scan
  /* Data takes form:
   *
   * +---------+----+----+----+----+----+----+----+----+----+-----+----+----+---------+---------+---------+
   * | 2 (STX) | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | D10 | C1 | C2 | 13 (CR) | 10 (LF) | 3 (ETX) |
   * +---------+----+----+----+----+----+----+----+----+----+-----+----+----+---------+---------+---------+
   *
  */

  char c = Serial.read();               // get the first character

  while (c != 2){c = Serial.read();}    // if its not STX, keep going till it is
                                        // (though this is bad!)
  if (c == 2){                          // now that we have STX
    while ( c != 3 ){                   // loop through all new date till we get ETX
      c = Serial.read();
      scratch += c;                     // and append it to scratch
    }
  }

  scratch = scratch.replace(13, '\0');    // clean away
  scratch = scratch.replace(10, '\0');
  scratch = scratch.toLowerCase();