int LedDo=9,LedXanh=10,LedVang=11;
int ledDoValue=0;
void setup() {
  // put your setup code here, to run once:
 pinMode(LedDo, OUTPUT);
 pinMode(LedXanh, OUTPUT);
 pinMode(LedVang, OUTPUT);
 Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
 for (int i=0; i<30; i++)
 {
    ledDoValue= map(i, 0,29, 255, 0);
    Serial.println(ledDoValue);
    analogWrite(LedDo,ledDoValue);
    delay(1000);
 }
  Serial.println("Đã tắt");
  delay(10000);
}