Two years ago we had this discussion thread that looks quite useful, it determines the place of impact with microphones but piezo's is also possible.
Check - http://arduino.cc/forum/index.php/topic,52583.0.html -
Two years ago we had this discussion thread that looks quite useful, it determines the place of impact with microphones but piezo's is also possible.
Check - http://arduino.cc/forum/index.php/topic,52583.0.html -