int led1=11;

void setup(){
pinMode(led1, OUTPUT);

}

void loop(){
analogWrite(led1, 0);
delay(1000);
analogWrite(led1, 60);
delay(1000);
analogWrite(led1,120);
delay(1000);
analogWrite(led1, 180);
delay(1000);
analogWrite(led1, 210);
delay(1000);
analogWrite(led1, 255);
delay(1000);

}