   
   // print magnetometer data
     Serial.print (mx,DEC);//(mx+200,DEC); 
-    Serial.print ("\t");
+    Serial.print (",");
     Serial.print (my,DEC);//(my-70,DEC);
-    Serial.print ("\t");
+    Serial.print (",");
     Serial.print (mz,DEC);//(mz-700,DEC);  
-    Serial.print ("\t");
+    Serial.print (",");
   
   }
   

  I2CwriteByte(MAG_ADDRESS,0x0A,0x16);
  
   pinMode(13, OUTPUT);
  Timer1.initialize(100000);         // initialize timer1, and set a 1/2 second period
  Timer1.attachInterrupt(callback);  // attaches callback() as a timer overflow interrupt
  
  

//  Serial.print ("\t");
  
  // End of line
  //Serial.println("");
  //delay(500);  
 
  // ____________________________________
  // :::  accelerometer and gyroscope ::: 
