Sketch yang perlu diketik:
const int pinLED1 = 12;
const int pinLED2 = 13;
void setup() {
pinMode(pinLED1, OUTPUT);
pinMode(pinLED2, OUTPUT);
}
void loop() {
digitalWrite(pinLED1, HIGH);
delay(500);
digitalWrite(pinLED1, LOW);
delay(500);
digitalWrite(pinLED2, HIGH);
delay(500);
digitalWrite(pinLED2, LOW);
delay(500);
}