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

}
//the loop
void loop() {
  // Read the input on analog pin 0:
  int sensorvalue = analogRead(A0);
  //print out the value you read"
  Serial.println(sensorvalue);
  delay(1);  //delay in between reads for stability
}