int led=9;
int sensorValue=0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(led, OUTPUT);

}
// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  sensorValue = analogRead(A0);
  // print out the value you read:
  analogWrite(led,sensorValue/4);
  Serial.println(sensorValue);
  delay(1); // delay 1 milli sec in between reads for stability
}