arduino

先安裝



void setup() {
  // put your setup code here, to run once:
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 9; i <= 13; i++) {
    digitalWrite(i, HIGH);
    delay(500);
    digitalWrite(i, LOW);
    delay(500);
  }
}

void setup() {

  // put your setup code here, to run once:

  pinMode(9, OUTPUT);

  pinMode(10, OUTPUT);

  pinMode(11, OUTPUT);

  pinMode(12, OUTPUT);

  pinMode(13, OUTPUT);

  pinMode(2, INPUT_PULLUP);

}

void loop() {

  // put your main code here, to run repeatedly:

  if (digitalRead(2) ==HIGH) {

    for (int i = 9; i <= 13; i++) {

      digitalWrite(i, HIGH);

      delay(50);

      digitalWrite(i, LOW);

      delay(50);

    }

  }

  else {

    for (int i = 13; i >= 9; i--) {

      digitalWrite(i, HIGH);

      delay(50);

      digitalWrite(i, LOW);

      delay(50);

    }

  }

}

如果2接地的話就會變逆向閃