const int ldrPin = A0;
const int ledPin = 9;
const int threshold = 500;

void setup(){
  pinMode(ldrPin, INPUT);
  pinMode(ledPin, OUTPUT);
}




void loop(){
  int ldrValue = analogRead(ldrPin);

  if(ldrValue < threshold){
    digitalWrite(ledPin, LOW);
  }else{
    digitalWrite(ledPin, LOW);
  }


  int blinkDelay = map(ldrValue,0,1023,1000,10);
  delay(blinkDelay);
}