#include <SoftwareSerial.h>
SoftwareSerial mySerial(0,1);

int inputPin = 3;    
int sensorValue;

void setup() {
  // initialize the serial communication:
  mySerial.begin(9600);
}

void loop() {
   sensorValue = analogRead(inputPin) / 4;
  // send the value of analog input 4:
  mySerial.write(sensorValue);  // Send the value
  // wait a bit for the analog-to-digital converter 
  // to stabilize after the last reading:
  delay(100);
}