#include <SoftwareSerial.h>

SoftwareSerial mySerial (A0, A1);

void setup() {
  // initialize serial communication at 9600 bits per second:
  mySerial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  int sensorValue = analogRead (A3);
  // print out the value you read:
  mySerial.println(sensorValue);
  delay(1);        // delay in between reads for stability
}