   
   // filename will be mm-dd-hh.txt
   DateTime rtc_time=rtc.now();
-  file_name = String( rtc_time.month() ) + '-' + String( rtc_time.day() ) + '-' + 
+  file_name = String( rtc_time.month() ) + '-' + String( rtc_time.day() ) + '@' + 
       String( rtc_time.hour() ) + ".txt";
 #ifndef DEBUG
   SD.begin(CHIP_SELECT_PIN);
   delay(100); // otherwise open() will fail
 
   // write header
- 
   data_file = SD.open(file_name.c_str(), FILE_WRITE);
   if (data_file) {
     data_file.print("Rec. #\tMM/DD/YYYY\tHH:MM:SS (UTC)\tlatitude\tlongitude\t");
     data_file.println("Sharp\tGrove\tCO read\tCO heat\tHumidity\tTemp (celsius)");
     data_file.close();
   }
-
- #endif
-
-  // **************** FOR SENOR READING TIMER ****************
-  sensors_read_time_start = millis();
+#endif
 
 } // setup
 

//  MQ7			A0		23
//  MQ7_VOLTAGE	        D2		4
//  TEMP		A1		24
//  PULSE		A2		25

// Memory PINOUTS
// Arduino-- SD shield

  // **************** FOR TEMP & HUMIDITY SENSOR ****************
  // Be sure to wait 2 seconds between measurements.


  // we've spent 1 second reading gps data and 1 second reading grove data
  // go ahead and read the remaining sensors and record the data
  RecordSensors();
    
} // void loop()

