I am having some concerns about wiring sensors for some data collection I am doing using multiple photoresistors. Although I have seen many websites claim that it is "ok" to wire multiple photoresistors to analog inputs the way I have shown below, I suspected it would not give a "true read", and have confirmed this from observing the analogRead results in the serial monitor. Below is the circuit:
One leg of each resistor is attached to common 5v. The other leg is attached to common ground via a 1k resistor. In addition, the photoresistor leg opposite the 5v sides is attached to an analog pin on the arduino. There are two photoresistors attached to 2 different analog pins in this way, but they share a common ground.
My question is: will not the change in resistance of photoresistor 1 affect the entire circuit? In addition to changing the read from A1, it will also adjust A0 slightly because they are on the same circuit. Is there some alternate method by which I can wire them to avoid this problem?