const int analogInPin = A0 ;

int sensorValue = 0 ;
int timer = 0 ;

void setup(){
  pinMode(13, OUTPUT);
  pinMode(8, OUTPUT);
}

void loop(){
  sensorValue = analogRead(analogInPin) ;

  timer = map(sensorValue, 0, 1000, 200, 2000);
  digitalWrite(13, HIGH);
  delay(timer);
  digitalWrite(13, LOW);
  delay(timer);
  digitalWrite(13, HIGH);
  delay(timer);
  digitalWrite(13, LOW);
  delay(timer);
  digitalWrite(8, HIGH);
  delay(timer);
  digitalWrite(8, LOW);
  delay(timer);
  digitalWrite(8, HIGH);
  delay(timer);
  digitalWrite(8, LOW);
  delay(timer);
}