int led = 9; // pin PWM LED
void setup() {
pinMode(led, OUTPUT);
}
void loop() {
// Fade in (redup ke terang)
for (int i = 0; i <= 255; i++) {
analogWrite(led, i);
delay(10);
}
// Fade out (terang ke redup)
for (int i = 255; i >= 0; i--) {
analogWrite(led, i);
delay(10);
}
}