2.5.3-Fading2.ino

/*
另一种呼吸灯写法
感谢PPeach推荐
 */

int led = 9;        // LED灯连接在9号引脚
int brightness = 0; // LED灯亮度
int fadeAmount = 5; // 亮度渐变值

void setup()
{
  pinMode(led, OUTPUT);
}

void loop()
{
  analogWrite(led, brightness);
  brightness = brightness + fadeAmount;
  if (brightness == 0 || brightness == 255)
  {
    fadeAmount = -fadeAmount;
  }
  delay(30);
}