[sdiy-interim] MIDI guitar, the hard way

[jean-pierre.desrochers at ville.quebec.qc.ca]

Yes you are absolutly right guys about the x/y axis shorts..
Sorry for the mistake.

Let me know your thoughts about the late idea:
For the strings bending & strumming here is my idea:
I'll explain for one string (other 5 will use about the same scheme):
Take the string and attache it to the neck's head using machine heads
or whatever to bend it but not very much..! The other end is where
the bending & strumming trick resides. You take the string inside the 
guitar rolling it on a small pulley and glue the end of
the string 90degrees over a small piezo sensor going across a small spring
to
minimize the hit strentgh. Again this assembly needs very little
tension to work. Then when you hit the string the piezo sensor
doesn't hear but 'senses' the string tension variation giving
an attenuated waveform that is the string volume envelope.
Instead of fixing piezo sensor to the body directly you
hold it at the cursor of a small slide pot at 50% position rest.
So when you bend the string the slide pot follows the finger movement
and gives (if you like) a DC control voltage..
Of course another small spring will retain the pot cursor
at 50% at rest.

J-P Desrochers


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