Dunque ho aggiunto,il codice postato da te al mio sketch.La velocita' di acquisizione tra una misura e' l'altra e' di 20ms.Pero' il valori mi vengono visualizzati non come lo schema nx,xy,nz,bensi' tutti in orizzontale,come nel modo seguente: 
-0.1534376144,0.0418748855,1.0351562500-0.1729688644,0.0223436355,0.9960937500-0.1729688644,0.0223436355,0.9765625000-0.1729688644,0.0223436355,0.9960937500-0.1729688644,0.0223436355,0.9765625000-0.1729688644,0.0223436355,0.9960937500-0.1534376144,0.0418748855,1.0156250000-0.1534376144,0.0418748855,1.0156250000-0.1534376144,0.0418748855,1.0156250000-0.1339063644,0.0418748855,1.0351562500-0.1143751144,0.0809373855,1.0546875000-0.11