#include <DigiUSB.h>

int sensorValue=0;
int oldSensorValue=0;

void setup()
{
  DigiUSB.begin();
}

void loop()
{
 sensorValue = analogRead(1);
 sensorValue = map(sensorValue, 0, 1023, 0, 9);

 if (sensorValue != oldSensorValue)
 {
   DigiUSB.println(sensorValue);
 }

 oldSensorValue = sensorValue;
 DigiUSB.delay(10);
}