//Salman Taş 20191701044
#define led 9

int delaytime (int x){     //calculate the delay time
  int time = 30 - 5*x;
  time *= 100; // bring values back to ms || you can reduce this to 10 to see more cleary
  return time;
}
void blink (int x){            //blink the led accordingly
  digitalWrite(led, HIGH);
  delay(x);
  digitalWrite(led, LOW);
  delay(x);
}

void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  pinMode(A0, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  long int a_in = analogRead(A0); // read the analog input
  float V = a_in * (5.0 / 1023.0); //clip it between 0-5
  int Voltage = int(V); //convert it into int
  int time = delaytime(Voltage); //get the delay time
  blink(time);  //call blink function
}