void setup() {
  // ARDUINO UNO_LAMPU LED SINGLE
  //PEMBUAT-ANDIKA BAYU PRASETYA_X TJKT 1
#define LED13 
pinMode(13, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(1000);
}