#define PhC_PIN PB3                       //Define the Photoconductive Cell Pin
                    int phcellReading;                        //Variable for PhCell Reading
                    
                    #include <SoftwareSerial.h>               //Including the SoftwareSerial library
                    #define RX PB0                            //Defining the MOSI Pin as RX
                    #define TX PB1                            //Defining the MISO Pin as TX
                    SoftwareSerial mySerial(RX, TX);          //Defining the SoftwareSerial Pins (RX, TX)
                    
                    void setup() {  
                        mySerial.begin(2400);                   //Opening the serial, 2400 as data rate
                        pinMode(PhC_PIN, INPUT_PULLUP);         //Setup the internal Pullup
                    }
                    
                    void loop(){
                        phcellReading = analogRead(PhC_PIN);  //Read the PhCell
                        mySerial.print("Analog reading = ");  
                        mySerial.println(phcellReading);      //Print PhCell
                        delay(100);                           //wait a bit
                    }