ws2812十种灯光代码

下面是给出十种常见的WS2812灯光效果的代码示例：

1. 颜色渐变：

void colorWipe(uint32_t color, int wait) {
  for(int i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, color);
    strip.show();
    delay(wait);
  }
}

2. 彩虹流动：

void rainbow(int wait) {
  for(int j=0; j<256; j++) {
    for(int i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  } else if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  } else {
    WheelPos -= 170;
    return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
  }
}

3. 呼吸灯：

void breathe(int wait) {
  int max_bright = 255;
  int min_bright = 0;
  for(int i=min_bright; i<max_bright; i++) {
    for(int j=0; j<strip.numPixels(); j++) {
      strip.setPixelColor(j, strip.Color(i, i, i));
    }
    strip.show();
    delay(wait);
  }
  for(int i=max_bright; i>min_bright; i--) {
    for(int j=0; j<strip.numPixels(); j++) {
      strip.setPixelColor(j, strip.Color(i, i, i));
    }
    strip.show();
    delay(wait);
  }
}

4. 闪烁：

void blink(uint32_t color, int wait, int blink_times) {
  for(int i=0; i<blink_times; i++) {
    for(int j=0; j<strip.numPixels(); j++) {
      strip.setPixelColor(j, color);
    }
    strip.show();
    delay(wait);
    for(int j=0; j<strip.numPixels(); j++) {
      strip.setPixelColor(j, strip.Color(0, 0, 0));
    }
    strip.show();
    delay(wait);
  }
}

5. 像素化：

void pixelate(uint32_t color, int wait) {
  int pixel_size = 5;
  for(int i=0; i<strip.numPixels(); i+=pixel_size) {
    for(int j=i; j<i+pixel_size; j++) {
      strip.setPixelColor(j, color);
    }
    strip.show();
    delay(wait);
    for(int j=i; j<i+pixel_size; j++) {
      strip.setPixelColor(j, strip.Color(0, 0, 0));
    }
    strip.show();
  }
}

6. 火焰效果：

void flame(int wait) {
  for(int i=0; i<strip.numPixels(); i++) {
    int flicker = random(150);
    strip.setPixelColor(i, strip.Color(flicker+100, 0, 0));
  }
  strip.show();
  delay(wait);
}

7. 音乐节奏：

void music(int wait) {
  int bass = analogRead(A0);
  int treble = analogRead(A1);
  int mid = analogRead(A2);
  int total = (bass+treble+mid)/3;
  for(int i=0; i<strip.numPixels(); i++) {
    int brightness = map(total, 0, 1023, 0, 255);
    strip.setPixelColor(i, strip.Color(brightness, 0, 0));
  }
  strip.show();
  delay(wait);
}

8. 星空效果：

void stars(int wait) {
  for(int i=0; i<strip.numPixels(); i++) {
    int flicker = random(150);
    strip.setPixelColor(i, strip.Color(flicker, flicker, flicker));
  }
  strip.show();
  delay(wait);
}

9. 渐变循环：

void gradientCycle(int wait) {
  int r, g, b;
  for(int k=0; k<256; k++) {
    for(int j=0; j<strip.numPixels(); j++) {
      r = sin(0.3*j+k/10.0) * 127 + 128;
      g = sin(0.3*j+k/10.0) * 127 + 128;
      b = sin(0.3*j+k/10.0) * 127 + 128;
      strip.setPixelColor(j, strip.Color(r, g, b));
    }
    strip.show();
    delay(wait);
  }
}

10. 彩带效果：

void ribbon(int wait) {
  for(int i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(255, 0, 0));
  }
  strip.show();
  delay(wait);
  for(int i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(0, 255, 0));
  }
  strip.show();
  delay(wait);
  for(int i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(0, 0, 255));
  }
  strip.show();
  delay(wait);
}

注意：这些代码只是示例，实际使用时需要根据具体情况进行修改。