//SKETCH 01
//Blink Led by Fajar Himawan

void setup() {
    pinMode(2, OUTPUT);
    pinMode(4, OUTPUT);
    pinMode(26, OUTPUT);
    pinMode(27, OUTPUT);
}

void loop() {
    digitalWrite(2, HIGH);
    delay(500);
    digitalWrite(2, LOW);
    delay(500);

    digitalWrite(4, HIGH);
    delay(500);
    digitalWrite(4, LOW);
    delay(500);

    digitalWrite(26, HIGH);
    delay(500);
    digitalWrite(26, LOW);
    delay(500);

    digitalWrite(27, HIGH);
    delay(500);
    digitalWrite(27, LOW);
    delay(500);
}