void setup() {
  // put your setup code here, to run once:
  pinMode(3, OUTPUT);
 
}

void loop() {
  // put your main code here, to run repeatedly:
analogWrite(3, 0); //nilai PWM 0-255
delay(1000);  
analogWrite(3, 10); 
delay(1000);  
analogWrite(3, 100);
delay(1000);  
analogWrite(3, 200);  
delay(1000); 
analogWrite(3, 255); 
delay(1000);

}