Mess Up with Arduino! Digital Vibrate Sensor

Today I tested Arduino with digital vibrate sensor. I was first planned to use pressure sensor as the device to detect person who standing on the board but I think that knock sensor or vibrate sensor is best to use in my installation. Below is the arrangement of the digital vibrate sensor.



After I put in the code found online, I managed to make the whole thing function. Below is the photo which LED light up when detect vibration on the table surface.



After that, I add in some more code which will send the signal to analog port when detect vibration. I've downloaded Serial Midi Converter which will convert the signal received into various sound like piano, drum etc. I managed to program the board to produce piano sound but not drum sound. Drum is the main sound that will be used in my installation. It is first step to success although it is not drum sound but piano sound. I'll study the code again... to be continue...