Hey I am creating a device that will be attached to regular Drum Kit. The setup is quite simple piezos with 1M resistors are plugged into 8051 and from arduino i read each value from the analog input. Everything is kind of straight forward cause I can read from the piezos values, but what I have noticed is that when i hit one piezo, the readings in other inputs are affected as well, and the values are high enough so I cannot from code really say which one was hitted (because I don't really care about what the values exactly are, just one hit). For me it seems that all the line of piezo's connected together affect the rest of the inputs somehow.
I guess I screwed up something with the piezo connection.
Thanks for any kind of hints!
oh and here is the schematics diagram for my connection setuphttp://obrazki.elektroda.pl/2644224300_1302877364.jpg