So I am trying to make a pressure sensitive "drum". I want the pressure sensitivity to be translated to an openframeworks application, ie the harder you hit the farther/harder an image will "fly".
I have tried the "Knock" program, and it seems to be working fine. I modified the program to just spit out the value it gets from the AnalogRead() and I only get useful information when I am directly tapping the sensor, if I tape it to a table or box, I barely get anything. I don't need it to be intensely accurate, but I do need some indication that the force I hit is causing a proportional reaction.
so my questions are:
is there some circuitry to amplify the input to the arduino? Can I change the value of the resistor? How will that effect things?
I have seen some stuff linking to this video:
Does attaching the piezo to something conductive (ie Brass) make the piezo work better?
Do I need another sensor?
Force Sensitive Resistor - Square - SEN-09376 - SparkFun Electronics
seem like they could be a better fit (and just better constructed), but I need a few of the drums mentioned above so I'm curious to know anyone's experiences before I pay for a bunch of them. My impression is that they were more for constant sustained pressure ie "pinching" or "pressing" (ie weight from standing on something)