#define mosfet 10

void setup() {
pinMode(mosfet, 10);
}

void loop() {
analogWrite(mosfet, 255);
delay(250);
analogWrite(mosfet, 225);
delay(250);
analogWrite(mosfet, 200);
delay(250);
analogWrite(mosfet, 175);
delay(250);
analogWrite(mosfet, 150);
delay(250);
analogWrite(mosfet, 125);
delay(250);
analogWrite(mosfet, 100);
delay(250);
analogWrite(mosfet, 75);
delay(250);
analogWrite(mosfet, 50);
delay(250);
analogWrite(mosfet, 25);
delay(250);
analogWrite(mosfet, 12);
delay(250);
analogWrite(mosfet, 5);
delay(250);
analogWrite(mosfet, 0);
delay(10000);
}