You asked virtually the same question back on October 30.
Incorrect analog values when using piezo + potentiometer
You never responded to any of the advice there, nor have you incorporated any of into your sketch or expanded circuit.
You asked virtually the same question back on October 30.
Incorrect analog values when using piezo + potentiometer
You never responded to any of the advice there, nor have you incorporated any of into your sketch or expanded circuit.