int ledPin = 11;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(11, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int sensorValue = analogRead(A0);
  int brightness = sensorValue / 4;
  Serial.println(sensorValue);
  analogWrite(11, brightness);
  delay(1);
}