       // Machine is ready to fire, get ready to track time
       standby = false;
       elapsed_time = accumulator(standby) / 1000;
+      Serial.print("Elapsed Time: ");
+      Serial.print(elapsed_time);
       }
     }
   }


   Input:
      RFID tag

   Output:
      Serial number of tag scanned

   Operation:
      Reader waits until a tag is scanned, then prints the serial number of the tag

  digitalWrite(ledPin, LOW); 
  standby = true;
  response[7] = NULL;
  elapsed_time = 0;

  // read response from RDM880 and print
  int i = 0;
