#include <Servo.h>

const int photoresistorPin1 = A0;
const int photoresistorPin2 = A1;
const int servoPin = 9;

Servo myServo;

void setup() {
  myServo.attach(servoPin);
  Serial.begin(9600);
}

void loop() {
  int value1 = analogRead(photoresistorPin1);
  int value2 = analogRead(photoresistorPin2);

  Serial.print("Photoresistor 1: ");
  Serial.print(value1);
  Serial.print(" | Photoresistor 2: ");
  Serial.println(value2);

  int threshold = 50;

  if (value1 > value2 + threshold) {
    myServo.write(myServo.read() - 1);
  } else if (value2 > value1 + threshold) {
    myServo.write(myServo.read() + 1);
  }

  delay(100);
}