LED 여러개 켜기

초록 -> 노랑 -> 빨강 순서로 켜지고, 빨강 -> 노랑 -> 초록 순서로 끄기

void setup() {
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  digitalWrite(11, HIGH);
  delay(1000);
  digitalWrite(12, HIGH);
  delay(1000);
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  delay(1000);
  digitalWrite(12, LOW);
  delay(1000);
  digitalWrite(11, LOW);
  delay(1000);
}

---

초록 -> 노랑 -> 빨강 신호등 만들기

void setup() {
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  digitalWrite(11, HIGH);
  delay(1000);
  digitalWrite(11, LOW);
  delay(1000);
  digitalWrite(12, HIGH);
  delay(1000);
  digitalWrite(12, LOW);
  delay(1000);
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  delay(1000);
}