Basically what I want to accomplish is link the force sensors on my circuit to a piezo speaker on the arduino UNO board. I've gotten one of the force sensors to work with the piezo output, but am having trouble connecting another one. When I monitored using serial monitor, only one of the force sensors was changing when I applied pressure and the other one did not change at all. The two circuits are identical to one another and yet they aren't working. Is there a special method for interfacing two inputs with two outputs on arduino?
Thanks in advance!