void setup() {
  // put your setup code here, to run once:
pinMode(9, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
analogWrite(9 , 20);
delay(550);
analogWrite(9 , 35);
delay(550);
analogWrite(9 , 50);
delay(550);
analogWrite(9 , 80);
delay(550);
analogWrite(9 , 110);
delay(550);
analogWrite(9 , 140);
delay(550);
analogWrite(9 , 170);
delay(550);
analogWrite(9 , 200);
delay(550);
analogWrite(9 , 230);
delay(550);
analogWrite(9 , 240);
delay(550);
analogWrite(9 , 255);
delay(550);

}