Jawaban:

Penjelasan:

sebelum upload code, lampu led ada 2 kaki negatif/katoda (kaki yang lebih pendek) dan yang panjang ke pin 13

void setup() {

 //initialize digital pin 13 as an output.

 pinMode(13, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

 digitalWrite(13, HIGH);   // turn the LED on (HIGH is the  

voltage level)

 delay(1000);              // wait for a second

 digitalWrite(13, LOW);    // turn the LED off by making the

voltage LOW

 delay(1000);              // wait for a second

}