//Arduino Code:

 int photocellPin = 0;    // Analog input pin that the photocell is attached to
 int val = 0;   // value read from the analog sensor

 void setup() {
 Serial.begin(115200); 
}

 void loop() {
  val = analogRead(photocellPin);
   Serial.println(val);
   Serial.flush();
   delay(200);
}