const int sensorPin = A0;
const int pinLED = 9;
int sensorValue = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(pinLED, OUTPUT);
}
int sensor = 0;
int brightness = 0;

void loop() {
  // put your main code here, to run repeatedly:
  sensorValue = analogRead(sensorPin);
  digitalWrite(pinLED, HIGH);

  delay(sensorValue);

  digitalWrite(pinLED, LOW);

  delay(sensorValue);
}