Serial.println("\n\n Begin scanning bar codes.");
    for (i = 0; i<=posSize-1;){               //posSize
      while(barcode.available()==0){};  //pause the program
      if (barcode.available()){
        char c[8];
        for (int j = 0; j<=7;j++){
          c[j] = barcode.read();
        }
        Serial.println(c);
      }

      stepper2.runToNewPosition(x[i]);
      stepper1.runToNewPosition(y[i]);
      i++;
    }