彩灯的多种玩法

来自Microduino Wikipedia
（重定向自彩灯呼吸闪烁效果）
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此示例给出了控制彩灯的几种显示效果。

呼吸、流水、闪烁、彩虹、炫彩

硬件清单

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电路搭建

将彩灯的IN接到Hub的6/7引脚，实际使用的是6号引脚。
将Battery、Core、Hub堆叠在一起，通过MicroUSB数据线接入电脑。

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代码

  • 呼吸灯
#include <Microduino_ColorLED.h> //引用彩灯库

#define PIN            6         //彩灯引脚
#define NUMPIXELS      16        //级联彩灯数量

#define val_max 255
#define val_min 0

ColorLED strip = ColorLED(NUMPIXELS, PIN); //将ColorLED类命名为strip，并定义彩灯数量和彩灯引脚号

void setup() {
  strip.begin();                 //彩灯初始化
  strip.show();
}

void loop() {
  rainbowCycle( 255, 0, 0, 5);//红色呼吸
  rainbowCycle( 0, 255, 0, 5);//绿色呼吸
  rainbowCycle( 0, 0, 255, 5);//蓝色呼吸
}

void colorSet(uint32_t c) {
  for (uint16_t i = 0; i < strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
  }
  strip.show();
}

void rainbowCycle( int r, int g, int b, uint8_t wait) {
  for (int val = 0; val < 255; val++)
  {
    colorSet(strip.Color(map(val, val_min, val_max, 0, r), map(val, val_min, val_max, 0, g), map(val, val_min, val_max, 0, b)));
    delay(wait);
  }
  for (int val = 255; val >= 0; val--)
  {
    colorSet(strip.Color(map(val, val_min, val_max, 0, r), map(val, val_min, val_max, 0, g), map(val, val_min, val_max, 0, b)));
    delay(wait);
  }
}



  • 流水灯
#include <Microduino_ColorLED.h> //引用彩灯库

#define PIN            6         //彩灯引脚
#define NUMPIXELS      7        //级联彩灯数量

#define val_max 255
#define val_min 0

ColorLED strip = ColorLED(NUMPIXELS, PIN); //将ColorLED类命名为strip，并定义彩灯数量和彩灯引脚号

void setup() {
  strip.begin();                 //彩灯初始化
  strip.show();
}

/*流水灯效果*/
void loop() {
  theaterChase(COLOR_RED,    2, 450); //红色流水灯效果，循环2次，两灯之间延时450ms
  theaterChase(COLOR_BLUE,   4, 400); //蓝色流水灯效果，循环4次，两灯之间延时400ms
}

//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t n, uint8_t wait) {
  for (int j = 0; j < n; j++) { //do 10 cycles of chasing
    for (uint16_t i = 0; i < strip.numPixels(); i++) {
      strip.setPixelColor(i, c);  //turn every third pixel on
      strip.show();
      delay(wait);
      strip.setPixelColor(i, 0); //turn every third pixel on
      strip.show();
    }
  }
}



  • 闪烁灯
#include <Microduino_ColorLED.h> //引用彩灯库

#define PIN            6         //彩灯引脚
#define NUMPIXELS      7         //级联彩灯数量

#define val_max 255
#define val_min 0

ColorLED strip = ColorLED(NUMPIXELS, PIN); //将ColorLED类命名为strip，并定义彩灯数量和彩灯引脚号

void setup() {
  strip.begin();                 //彩灯初始化
  strip.show();
}

void loop() {
  ledBlinkALL(COLOR_BLUE, 1000);
}

//第n号灯，颜色c,闪烁时间wait
void ledBlink(uint32_t c, uint8_t n, uint8_t wait) {
  strip.setPixelColor(n, c);  //turn every third pixel on
  strip.show();
  delay(wait);
  strip.setPixelColor(n, 0); //turn every third pixel on
  strip.show();
  delay(wait);
}

//全部灯，颜色c,闪烁时间wait
void ledBlinkALL(uint32_t c, uint8_t wait) {
  for (uint16_t i = 0; i < strip.numPixels(); i++) {
    strip.setPixelColor(i, c);  
    strip.show();
  }
  delay(wait);
  for (uint16_t i = 0; i < strip.numPixels(); i++) {
    strip.setPixelColor(i, 0); 
    strip.show();
  }
  delay(wait);
}



  • 彩虹灯
#include <Microduino_ColorLED.h> //引用彩灯库

#define PIN            6         //彩灯引脚
#define NUMPIXELS      7        //级联彩灯数量

#define val_max 255
#define val_min 0

ColorLED strip = ColorLED(NUMPIXELS, PIN); //将ColorLED类命名为strip，并定义彩灯数量和彩灯引脚号

void setup() {
  strip.begin();                 //彩灯初始化
  strip.show();
}

/*彩虹灯效*/
void loop() {
  rainbow(20);
}

void rainbow(uint8_t wait) {
  uint16_t i, j;
  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}



  • 炫彩灯
#include <Microduino_ColorLED.h> //引用彩灯库

#define PIN            6         //彩灯引脚
#define NUMPIXELS      7        //级联彩灯数量

#define val_max 255
#define val_min 0

ColorLED strip = ColorLED(NUMPIXELS, PIN); //将ColorLED类命名为strip，并定义彩灯数量和彩灯引脚号

void setup() {
  strip.begin();                 //彩灯初始化
  strip.show();
}

/*炫彩灯效*/
void loop() {
  rainbowCycle(20);
}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for (j = 0; j < 256 * 5; j++) { // 5 cycles of all colors on wheel
    for (i = 0; i < strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if (WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if (WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}


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