ch3_3眉開眼笑LEDx8

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ch3_3眉開眼笑LEDx8

LED接9,8,7,6,5,4,3,2

低電位作動

//ch3_3

const int LED[8]={9,8,7,6,5,4,3,2};

int off=1;

int on=0;

void setup()

{

  for(int i=0;i<8;i++)

  {

    pinMode(LED[i],OUTPUT);

    digitalWrite(LED[i],off);

  }

}

void loop()

{

  for(int i=0;i<=4;i++)

  {

    digitalWrite(LED[3-i],on);

    digitalWrite(LED[i+4],on);

    delay(100);

  }

  for(int i=0;i<8;i++)

  {

    digitalWrite(LED[i],off);

  }

  delay(500);

}