
const int pinLed = 13 ;
void setup (){
Serial.begin(9600);
pinMode (pinLed, OUTPUT);
Serial.println ("Program sudah siap" );
}
void loop (){
digitalWrite (pinLed, HIGH);
Serial.println("Led Nyala");
delay (1000);
digitalWrite (pinLed, LOW);
Serial.println("Led Mati" );
delay (1000);
}
Source : Youtube Life Tech