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  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序之九：快速淡入淡出循环变色

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序之九：快速淡入淡出循环变色
*/

#include <FastLED.h>

// How many leds in your strip?
#define NUM_LEDS 256 

// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806, define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 6
//#define CLOCK_PIN 13

// Define the array of leds
CRGB leds[NUM_LEDS];

void setup() { 
        Serial.begin(57600);
        Serial.println("resetting");
        FastLED.addLeds<WS2812,DATA_PIN,RGB>(leds,NUM_LEDS);
        FastLED.setBrightness(24);
}

void fadeall() { for(int i = 0; i < NUM_LEDS; i++) { leds[i].nscale8(250); } }

void loop() { 
        static uint8_t hue = 0;
        Serial.print("x");
        // First slide the led in one direction
        for(int i = 0; i < NUM_LEDS; i++) {
                // Set the i'th led to red 
                leds[i] = CHSV(hue++, 255, 255);
                // Show the leds
                FastLED.show(); 
                // now that we've shown the leds, reset the i'th led to black
                // leds[i] = CRGB::Black;
                fadeall();
                // Wait a little bit before we loop around and do it again
                delay(10);
        }
        Serial.print("x");

        // Now go in the other direction.  
        for(int i = (NUM_LEDS)-1; i >= 0; i--) {
                // Set the i'th led to red 
                leds[i] = CHSV(hue++, 255, 255);
                // Show the leds
                FastLED.show();
                // now that we've shown the leds, reset the i'th led to black
                // leds[i] = CRGB::Black;
                fadeall();
                // Wait a little bit before we loop around and do it again
                delay(10);
        }
}

 

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  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序之十：FastLED“100行代码”演示卷轴动画效果

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序之十：FastLED“100行代码”演示卷轴动画效果
*/

#include <FastLED.h>

FASTLED_USING_NAMESPACE

// FastLED "100-lines-of-code" demo reel, showing just a few 
// of the kinds of animation patterns you can quickly and easily 
// compose using FastLED.  
//
// This example also shows one easy way to define multiple 
// animations patterns and have them automatically rotate.
//
// -Mark Kriegsman, December 2014


#define DATA_PIN    6
//#define CLK_PIN   4
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
#define NUM_LEDS    256
CRGB leds[NUM_LEDS];

#define BRIGHTNESS         26
#define FRAMES_PER_SECOND  120

void setup() {
  delay(500); // 3 second delay for recovery
  
  // tell FastLED about the LED strip configuration
  FastLED.addLeds<LED_TYPE,DATA_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  //FastLED.addLeds<LED_TYPE,DATA_PIN,CLK_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);

  // set master brightness control
  FastLED.setBrightness(BRIGHTNESS);
}


// List of patterns to cycle through.  Each is defined as a separate function below.
typedef void (*SimplePatternList[])();
SimplePatternList gPatterns = { rainbow, rainbowWithGlitter, confetti, sinelon, juggle, bpm };

uint8_t gCurrentPatternNumber = 0; // Index number of which pattern is current
uint8_t gHue = 0; // rotating "base color" used by many of the patterns
  
void loop()
{
  // Call the current pattern function once, updating the 'leds' array
  gPatterns[gCurrentPatternNumber]();

  // send the 'leds' array out to the actual LED strip
  FastLED.show();  
  // insert a delay to keep the framerate modest
  FastLED.delay(500/FRAMES_PER_SECOND); 

  // do some periodic updates
  EVERY_N_MILLISECONDS( 20 ) { gHue++; } // slowly cycle the "base color" through the rainbow
  EVERY_N_SECONDS( 10 ) { nextPattern(); } // change patterns periodically
}

#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))

void nextPattern()
{
  // add one to the current pattern number, and wrap around at the end
  gCurrentPatternNumber = (gCurrentPatternNumber + 1) % ARRAY_SIZE( gPatterns);
}

void rainbow() 
{
  // FastLED's built-in rainbow generator
  fill_rainbow( leds, NUM_LEDS, gHue, 7);
}

void rainbowWithGlitter() 
{
  // built-in FastLED rainbow, plus some random sparkly glitter
  rainbow();
  addGlitter(80);
}

void addGlitter( fract8 chanceOfGlitter) 
{
  if( random8() < chanceOfGlitter) {
    leds[ random16(NUM_LEDS) ] += CRGB::White;
  }
}

void confetti() 
{
  // random colored speckles that blink in and fade smoothly
  fadeToBlackBy( leds, NUM_LEDS, 10);
  int pos = random16(NUM_LEDS);
  leds[pos] += CHSV( gHue + random8(256), 200, 255);
}

void sinelon()
{
  // a colored dot sweeping back and forth, with fading trails
  fadeToBlackBy( leds, NUM_LEDS, 20);
  int pos = beatsin16( 13, 0, NUM_LEDS-1 );
  leds[pos] += CHSV( gHue, 255, 192);
}

void bpm()
{
  // colored stripes pulsing at a defined Beats-Per-Minute (BPM)
  uint8_t BeatsPerMinute = 62;
  CRGBPalette16 palette = PartyColors_p;
  uint8_t beat = beatsin8( BeatsPerMinute, 64, 255);
  for( int i = 0; i < NUM_LEDS; i++) { //9948
    leds[i] = ColorFromPalette(palette, gHue+(i*2), beat-gHue+(i*10));
  }
}

void juggle() {
  // eight colored dots, weaving in and out of sync with each other
  fadeToBlackBy( leds, NUM_LEDS, 20);
  uint8_t dothue = 0;
  for( int i = 0; i < 8; i++) {
    leds[beatsin16( i+7, 0, NUM_LEDS-1 )] |= CHSV(dothue, 200, 255);
    dothue += 32;
  }
}

 

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  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十一：骄傲2015动画，不断变化的彩虹

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十一：骄傲2015动画，不断变化的彩虹
*/

#include "FastLED.h"

// Pride2015
// Animated, ever-changing rainbows.
// by Mark Kriegsman

#if FASTLED_VERSION < 3001000
#error "Requires FastLED 3.1 or later; check github for latest code."
#endif

#define DATA_PIN    6
//#define CLK_PIN   4
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
#define NUM_LEDS    256
#define BRIGHTNESS  22

CRGB leds[NUM_LEDS];


void setup() {
  delay(1000); // 3 second delay for recovery
  
  // tell FastLED about the LED strip configuration
  FastLED.addLeds<LED_TYPE,DATA_PIN,COLOR_ORDER>(leds, NUM_LEDS)
    .setCorrection(TypicalLEDStrip)
    .setDither(BRIGHTNESS < 255);

  // set master brightness control
  FastLED.setBrightness(BRIGHTNESS);
}


void loop()
{
  pride();
  FastLED.show();  
}


// This function draws rainbows with an ever-changing,
// widely-varying set of parameters.
void pride() 
{
  static uint16_t sPseudotime = 0;
  static uint16_t sLastMillis = 0;
  static uint16_t sHue16 = 0;
 
  uint8_t sat8 = beatsin88( 87, 220, 250);
  uint8_t brightdepth = beatsin88( 341, 96, 224);
  uint16_t brightnessthetainc16 = beatsin88( 203, (25 * 256), (40 * 256));
  uint8_t msmultiplier = beatsin88(147, 23, 60);

  uint16_t hue16 = sHue16;//gHue * 256;
  uint16_t hueinc16 = beatsin88(113, 1, 3000);
  
  uint16_t ms = millis();
  uint16_t deltams = ms - sLastMillis ;
  sLastMillis  = ms;
  sPseudotime += deltams * msmultiplier;
  sHue16 += deltams * beatsin88( 400, 5,9);
  uint16_t brightnesstheta16 = sPseudotime;
  
  for( uint16_t i = 0 ; i < NUM_LEDS; i++) {
    hue16 += hueinc16;
    uint8_t hue8 = hue16 / 256;

    brightnesstheta16  += brightnessthetainc16;
    uint16_t b16 = sin16( brightnesstheta16  ) + 32768;

    uint16_t bri16 = (uint32_t)((uint32_t)b16 * (uint32_t)b16) / 65536;
    uint8_t bri8 = (uint32_t)(((uint32_t)bri16) * brightdepth) / 65536;
    bri8 += (255 - brightdepth);
    
    CRGB newcolor = CHSV( hue8, sat8, bri8);
    
    uint16_t pixelnumber = i;
    pixelnumber = (NUM_LEDS-1) - pixelnumber;
    
    nblend( leds[pixelnumber], newcolor, 64);
  }
}

 

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  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十二：TwinkleFOX-淡入淡出的闪烁“假日”灯

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十二：TwinkleFOX-淡入淡出的闪烁“假日”灯
*/

#include "FastLED.h"

#define NUM_LEDS      256
#define LED_TYPE   WS2811
#define COLOR_ORDER   GRB
#define DATA_PIN        6
//#define CLK_PIN       4
#define VOLTS          12
#define MAX_MA       4000

//  TwinkleFOX: Twinkling 'holiday' lights that fade in and out.
//  Colors are chosen from a palette; a few palettes are provided.
//
//  This December 2015 implementation improves on the December 2014 version
//  in several ways:
//  - smoother fading, compatible with any colors and any palettes
//  - easier control of twinkle speed and twinkle density
//  - supports an optional 'background color'
//  - takes even less RAM: zero RAM overhead per pixel
//  - illustrates a couple of interesting techniques (uh oh...)
//
//  The idea behind this (new) implementation is that there's one
//  basic, repeating pattern that each pixel follows like a waveform:
//  The brightness rises from 0..255 and then falls back down to 0.
//  The brightness at any given point in time can be determined as
//  as a function of time, for example:
//    brightness = sine( time ); // a sine wave of brightness over time
//
//  So the way this implementation works is that every pixel follows
//  the exact same wave function over time.  In this particular case,
//  I chose a sawtooth triangle wave (triwave8) rather than a sine wave,
//  but the idea is the same: brightness = triwave8( time ).
//
//  Of course, if all the pixels used the exact same wave form, and
//  if they all used the exact same 'clock' for their 'time base', all
//  the pixels would brighten and dim at once -- which does not look
//  like twinkling at all.
//
//  So to achieve random-looking twinkling, each pixel is given a
//  slightly different 'clock' signal.  Some of the clocks run faster,
//  some run slower, and each 'clock' also has a random offset from zero.
//  The net result is that the 'clocks' for all the pixels are always out
//  of sync from each other, producing a nice random distribution
//  of twinkles.
//
//  The 'clock speed adjustment' and 'time offset' for each pixel
//  are generated randomly.  One (normal) approach to implementing that
//  would be to randomly generate the clock parameters for each pixel
//  at startup, and store them in some arrays.  However, that consumes
//  a great deal of precious RAM, and it turns out to be totally
//  unnessary!  If the random number generate is 'seeded' with the
//  same starting value every time, it will generate the same sequence
//  of values every time.  So the clock adjustment parameters for each
//  pixel are 'stored' in a pseudo-random number generator!  The PRNG
//  is reset, and then the first numbers out of it are the clock
//  adjustment parameters for the first pixel, the second numbers out
//  of it are the parameters for the second pixel, and so on.
//  In this way, we can 'store' a stable sequence of thousands of
//  random clock adjustment parameters in literally two bytes of RAM.
//
//  There's a little bit of fixed-point math involved in applying the
//  clock speed adjustments, which are expressed in eighths.  Each pixel's
//  clock speed ranges from 8/8ths of the system clock (i.e. 1x) to
//  23/8ths of the system clock (i.e. nearly 3x).
//
//  On a basic Arduino Uno or Leonardo, this code can twinkle 300+ pixels
//  smoothly at over 50 updates per seond.
//
//  -Mark Kriegsman, December 2015

CRGBArray<NUM_LEDS> leds;

// Overall twinkle speed.
// 0 (VERY slow) to 8 (VERY fast).
// 4, 5, and 6 are recommended, default is 4.
#define TWINKLE_SPEED 4

// Overall twinkle density.
// 0 (NONE lit) to 8 (ALL lit at once).
// Default is 5.
#define TWINKLE_DENSITY 5

// How often to change color palettes.
#define SECONDS_PER_PALETTE  30
// Also: toward the bottom of the file is an array
// called "ActivePaletteList" which controls which color
// palettes are used; you can add or remove color palettes
// from there freely.

// Background color for 'unlit' pixels
// Can be set to CRGB::Black if desired.
CRGB gBackgroundColor = CRGB::Black;
// Example of dim incandescent fairy light background color
// CRGB gBackgroundColor = CRGB(CRGB::FairyLight).nscale8_video(16);

// If AUTO_SELECT_BACKGROUND_COLOR is set to 1,
// then for any palette where the first two entries
// are the same, a dimmed version of that color will
// automatically be used as the background color.
#define AUTO_SELECT_BACKGROUND_COLOR 0

// If COOL_LIKE_INCANDESCENT is set to 1, colors will
// fade out slighted 'reddened', similar to how
// incandescent bulbs change color as they get dim down.
#define COOL_LIKE_INCANDESCENT 1


CRGBPalette16 gCurrentPalette;
CRGBPalette16 gTargetPalette;

void setup() {
  delay( 1000 ); //safety startup delay
  FastLED.setMaxPowerInVoltsAndMilliamps( VOLTS, MAX_MA);
  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS)
  .setCorrection(TypicalLEDStrip);
  FastLED.setBrightness(23);
  chooseNextColorPalette(gTargetPalette);
}


void loop()
{
  EVERY_N_SECONDS( SECONDS_PER_PALETTE ) {
    chooseNextColorPalette( gTargetPalette );
  }

  EVERY_N_MILLISECONDS( 10 ) {
    nblendPaletteTowardPalette( gCurrentPalette, gTargetPalette, 12);
  }

  drawTwinkles( leds);

  FastLED.show();
}


//  This function loops over each pixel, calculates the
//  adjusted 'clock' that this pixel should use, and calls
//  "CalculateOneTwinkle" on each pixel.  It then displays
//  either the twinkle color of the background color,
//  whichever is brighter.
void drawTwinkles( CRGBSet& L)
{
  // "PRNG16" is the pseudorandom number generator
  // It MUST be reset to the same starting value each time
  // this function is called, so that the sequence of 'random'
  // numbers that it generates is (paradoxically) stable.
  uint16_t PRNG16 = 11337;

  uint32_t clock32 = millis();

  // Set up the background color, "bg".
  // if AUTO_SELECT_BACKGROUND_COLOR == 1, and the first two colors of
  // the current palette are identical, then a deeply faded version of
  // that color is used for the background color
  CRGB bg;
  if ( (AUTO_SELECT_BACKGROUND_COLOR == 1) &&
       (gCurrentPalette[0] == gCurrentPalette[1] )) {
    bg = gCurrentPalette[0];
    uint8_t bglight = bg.getAverageLight();
    if ( bglight > 64) {
      bg.nscale8_video( 16); // very bright, so scale to 1/16th
    } else if ( bglight > 16) {
      bg.nscale8_video( 64); // not that bright, so scale to 1/4th
    } else {
      bg.nscale8_video( 86); // dim, scale to 1/3rd.
    }
  } else {
    bg = gBackgroundColor; // just use the explicitly defined background color
  }

  uint8_t backgroundBrightness = bg.getAverageLight();

  for ( CRGB& pixel : L) {
    PRNG16 = (uint16_t)(PRNG16 * 2053) + 1384; // next 'random' number
    uint16_t myclockoffset16 = PRNG16; // use that number as clock offset
    PRNG16 = (uint16_t)(PRNG16 * 2053) + 1384; // next 'random' number
    // use that number as clock speed adjustment factor (in 8ths, from 8/8ths to 23/8ths)
    uint8_t myspeedmultiplierQ5_3 =  ((((PRNG16 & 0xFF) >> 4) + (PRNG16 & 0x0F)) & 0x0F) + 0x08;
    uint32_t myclock30 = (uint32_t)((clock32 * myspeedmultiplierQ5_3) >> 3) + myclockoffset16;
    uint8_t  myunique8 = PRNG16 >> 8; // get 'salt' value for this pixel

    // We now have the adjusted 'clock' for this pixel, now we call
    // the function that computes what color the pixel should be based
    // on the "brightness = f( time )" idea.
    CRGB c = computeOneTwinkle( myclock30, myunique8);

    uint8_t cbright = c.getAverageLight();
    int16_t deltabright = cbright - backgroundBrightness;
    if ( deltabright >= 32 || (!bg)) {
      // If the new pixel is significantly brighter than the background color,
      // use the new color.
      pixel = c;
    } else if ( deltabright > 0 ) {
      // If the new pixel is just slightly brighter than the background color,
      // mix a blend of the new color and the background color
      pixel = blend( bg, c, deltabright * 8);
    } else {
      // if the new pixel is not at all brighter than the background color,
      // just use the background color.
      pixel = bg;
    }
  }
}


//  This function takes a time in pseudo-milliseconds,
//  figures out brightness = f( time ), and also hue = f( time )
//  The 'low digits' of the millisecond time are used as
//  input to the brightness wave function.
//  The 'high digits' are used to select a color, so that the color
//  does not change over the course of the fade-in, fade-out
//  of one cycle of the brightness wave function.
//  The 'high digits' are also used to determine whether this pixel
//  should light at all during this cycle, based on the TWINKLE_DENSITY.
CRGB computeOneTwinkle( uint32_t ms, uint8_t salt)
{
  uint16_t ticks = ms >> (8 - TWINKLE_SPEED);
  uint8_t fastcycle8 = ticks;
  uint16_t slowcycle16 = (ticks >> 8) + salt;
  slowcycle16 += sin8( slowcycle16);
  slowcycle16 =  (slowcycle16 * 2053) + 1384;
  uint8_t slowcycle8 = (slowcycle16 & 0xFF) + (slowcycle16 >> 8);

  uint8_t bright = 0;
  if ( ((slowcycle8 & 0x0E) / 2) < TWINKLE_DENSITY) {
    bright = attackDecayWave8( fastcycle8);
  }

  uint8_t hue = slowcycle8 - salt;
  CRGB c;
  if ( bright > 0) {
    c = ColorFromPalette( gCurrentPalette, hue, bright, NOBLEND);
    if ( COOL_LIKE_INCANDESCENT == 1 ) {
      coolLikeIncandescent( c, fastcycle8);
    }
  } else {
    c = CRGB::Black;
  }
  return c;
}


// This function is like 'triwave8', which produces a
// symmetrical up-and-down triangle sawtooth waveform, except that this
// function produces a triangle wave with a faster attack and a slower decay:
//
//     / \ 
//    /     \ 
//   /         \ 
//  /             \ 
//

uint8_t attackDecayWave8( uint8_t i)
{
  if ( i < 86) {
    return i * 3;
  } else {
    i -= 86;
    return 255 - (i + (i / 2));
  }
}

// This function takes a pixel, and if its in the 'fading down'
// part of the cycle, it adjusts the color a little bit like the
// way that incandescent bulbs fade toward 'red' as they dim.
void coolLikeIncandescent( CRGB& c, uint8_t phase)
{
  if ( phase < 128) return;

  uint8_t cooling = (phase - 128) >> 4;
  c.g = qsub8( c.g, cooling);
  c.b = qsub8( c.b, cooling * 2);
}

// A mostly red palette with green accents and white trim.
// "CRGB::Gray" is used as white to keep the brightness more uniform.
const TProgmemRGBPalette16 RedGreenWhite_p FL_PROGMEM =
{ CRGB::Red, CRGB::Red, CRGB::Red, CRGB::Red,
  CRGB::Red, CRGB::Red, CRGB::Red, CRGB::Red,
  CRGB::Red, CRGB::Red, CRGB::Gray, CRGB::Gray,
  CRGB::Green, CRGB::Green, CRGB::Green, CRGB::Green
};

// A mostly (dark) green palette with red berries.
#define Holly_Green 0x00580c
#define Holly_Red   0xB00402
const TProgmemRGBPalette16 Holly_p FL_PROGMEM =
{ Holly_Green, Holly_Green, Holly_Green, Holly_Green,
  Holly_Green, Holly_Green, Holly_Green, Holly_Green,
  Holly_Green, Holly_Green, Holly_Green, Holly_Green,
  Holly_Green, Holly_Green, Holly_Green, Holly_Red
};

// A red and white striped palette
// "CRGB::Gray" is used as white to keep the brightness more uniform.
const TProgmemRGBPalette16 RedWhite_p FL_PROGMEM =
{ CRGB::Red,  CRGB::Red,  CRGB::Red,  CRGB::Red,
  CRGB::Gray, CRGB::Gray, CRGB::Gray, CRGB::Gray,
  CRGB::Red,  CRGB::Red,  CRGB::Red,  CRGB::Red,
  CRGB::Gray, CRGB::Gray, CRGB::Gray, CRGB::Gray
};

// A mostly blue palette with white accents.
// "CRGB::Gray" is used as white to keep the brightness more uniform.
const TProgmemRGBPalette16 BlueWhite_p FL_PROGMEM =
{ CRGB::Blue, CRGB::Blue, CRGB::Blue, CRGB::Blue,
  CRGB::Blue, CRGB::Blue, CRGB::Blue, CRGB::Blue,
  CRGB::Blue, CRGB::Blue, CRGB::Blue, CRGB::Blue,
  CRGB::Blue, CRGB::Gray, CRGB::Gray, CRGB::Gray
};

// A pure "fairy light" palette with some brightness variations
#define HALFFAIRY ((CRGB::FairyLight & 0xFEFEFE) / 2)
#define QUARTERFAIRY ((CRGB::FairyLight & 0xFCFCFC) / 4)
const TProgmemRGBPalette16 FairyLight_p FL_PROGMEM =
{ CRGB::FairyLight, CRGB::FairyLight, CRGB::FairyLight, CRGB::FairyLight,
  HALFFAIRY,        HALFFAIRY,        CRGB::FairyLight, CRGB::FairyLight,
  QUARTERFAIRY,     QUARTERFAIRY,     CRGB::FairyLight, CRGB::FairyLight,
  CRGB::FairyLight, CRGB::FairyLight, CRGB::FairyLight, CRGB::FairyLight
};

// A palette of soft snowflakes with the occasional bright one
const TProgmemRGBPalette16 Snow_p FL_PROGMEM =
{ 0x304048, 0x304048, 0x304048, 0x304048,
  0x304048, 0x304048, 0x304048, 0x304048,
  0x304048, 0x304048, 0x304048, 0x304048,
  0x304048, 0x304048, 0x304048, 0xE0F0FF
};

// A palette reminiscent of large 'old-school' C9-size tree lights
// in the five classic colors: red, orange, green, blue, and white.
#define C9_Red    0xB80400
#define C9_Orange 0x902C02
#define C9_Green  0x046002
#define C9_Blue   0x070758
#define C9_White  0x606820
const TProgmemRGBPalette16 RetroC9_p FL_PROGMEM =
{ C9_Red,    C9_Orange, C9_Red,    C9_Orange,
  C9_Orange, C9_Red,    C9_Orange, C9_Red,
  C9_Green,  C9_Green,  C9_Green,  C9_Green,
  C9_Blue,   C9_Blue,   C9_Blue,
  C9_White
};

// A cold, icy pale blue palette
#define Ice_Blue1 0x0C1040
#define Ice_Blue2 0x182080
#define Ice_Blue3 0x5080C0
const TProgmemRGBPalette16 Ice_p FL_PROGMEM =
{
  Ice_Blue1, Ice_Blue1, Ice_Blue1, Ice_Blue1,
  Ice_Blue1, Ice_Blue1, Ice_Blue1, Ice_Blue1,
  Ice_Blue1, Ice_Blue1, Ice_Blue1, Ice_Blue1,
  Ice_Blue2, Ice_Blue2, Ice_Blue2, Ice_Blue3
};


// Add or remove palette names from this list to control which color
// palettes are used, and in what order.
const TProgmemRGBPalette16* ActivePaletteList[] = {
  &RetroC9_p,
  &BlueWhite_p,
  &RainbowColors_p,
  &FairyLight_p,
  &RedGreenWhite_p,
  &PartyColors_p,
  &RedWhite_p,
  &Snow_p,
  &Holly_p,
  &Ice_p
};


// Advance to the next color palette in the list (above).
void chooseNextColorPalette( CRGBPalette16& pal)
{
  const uint8_t numberOfPalettes = sizeof(ActivePaletteList) / sizeof(ActivePaletteList[0]);
  static uint8_t whichPalette = -1;
  whichPalette = addmod8( whichPalette, 1, numberOfPalettes);

  pal = *(ActivePaletteList[whichPalette]);
}

 

eagler8

实验场景图

 

eagler8

lugl4313820 发表于 2022-10-21 19:00 看到了一双苍霜的老手！

喜欢干活的劳动之手，呵呵

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十三：随机不同像素布局的xy矩阵

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十三：随机不同像素布局的xy矩阵
*/

#include <FastLED.h>

// Params for width and height
const uint8_t kMatrixWidth = 8;
const uint8_t kMatrixHeight = 32;

#define NUM_LEDS (kMatrixWidth * kMatrixHeight)

// Param for different pixel layouts
#define kMatrixSerpentineLayout  true

// led array
CRGB leds[kMatrixWidth * kMatrixHeight];

// x,y, & time values
uint32_t x,y,v_time,hue_time,hxy;

// Play with the values of the variables below and see what kinds of effects they
// have!  More octaves will make things slower.

// how many octaves to use for the brightness and hue functions
uint8_t octaves=1;
uint8_t hue_octaves=3;

// the 'distance' between points on the x and y axis
int xscale=57771;
int yscale=57771;

// the 'distance' between x/y points for the hue noise
int hue_scale=1;

// how fast we move through time & hue noise
int time_speed=1111;
int hue_speed=31;

// adjust these values to move along the x or y axis between frames
int x_speed=331;
int y_speed=1111;

void loop() {
  // fill the led array 2/16-bit noise values
  fill_2dnoise16(leds, kMatrixWidth, kMatrixHeight, kMatrixSerpentineLayout,
                octaves,x,xscale,y,yscale,v_time,
                hue_octaves,hxy,hue_scale,hxy,hue_scale,hue_time, false);

  FastLED.show();

  // adjust the intra-frame time values
  x += x_speed;
  y += y_speed;
  v_time += time_speed;
  hue_time += hue_speed;
  // delay(50);
}


void setup() {
  // initialize the x/y and time values
  random16_set_seed(8934);
  random16_add_entropy(analogRead(3));

  Serial.begin(57600);
  Serial.println("resetting!");

  delay(3000);
  FastLED.addLeds<WS2811,6,GRB>(leds,NUM_LEDS);
  FastLED.setBrightness(36);

  hxy = (uint32_t)((uint32_t)random16() << 16) + (uint32_t)random16();
  x = (uint32_t)((uint32_t)random16() << 16) + (uint32_t)random16();
  y = (uint32_t)((uint32_t)random16() << 16) + (uint32_t)random16();
  v_time = (uint32_t)((uint32_t)random16() << 16) + (uint32_t)random16();
  hue_time = (uint32_t)((uint32_t)random16() << 16) + (uint32_t)random16();
}

 

eagler8

实验场景图

 

eagler8

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十四：将噪声数据转换为 LED 阵列中的动态颜色

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十四：将噪声数据转换为 LED 阵列中的动态颜色
*/

#include <FastLED.h>

#define LED_PIN     6
#define BRIGHTNESS  26
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB

// Params for width and height
const uint8_t kMatrixWidth  = 8;
const uint8_t kMatrixHeight = 32;

// Param for different pixel layouts
const bool    kMatrixSerpentineLayout = true;


// This example combines two features of FastLED to produce a remarkable range of
// effects from a relatively small amount of code.  This example combines FastLED's
// color palette lookup functions with FastLED's Perlin noise generator, and
// the combination is extremely powerful.
//
// You might want to look at the "ColorPalette" and "Noise" examples separately
// if this example code seems daunting.
//
//
// The basic setup here is that for each frame, we generate a new array of
// 'noise' data, and then map it onto the LED matrix through a color palette.
//
// Periodically, the color palette is changed, and new noise-generation parameters
// are chosen at the same time.  In this example, specific noise-generation
// values have been selected to match the given color palettes; some are faster,
// or slower, or larger, or smaller than others, but there's no reason these
// parameters can't be freely mixed-and-matched.
//
// In addition, this example includes some fast automatic 'data smoothing' at
// lower noise speeds to help produce smoother animations in those cases.
//
// The FastLED built-in color palettes (Forest, Clouds, Lava, Ocean, Party) are
// used, as well as some 'hand-defined' ones, and some proceedurally generated
// palettes.


#define NUM_LEDS (kMatrixWidth * kMatrixHeight)
#define MAX_DIMENSION ((kMatrixWidth>kMatrixHeight) ? kMatrixWidth : kMatrixHeight)

// The leds
CRGB leds[kMatrixWidth * kMatrixHeight];

// The 16 bit version of our coordinates
static uint16_t x;
static uint16_t y;
static uint16_t z;

// We're using the x/y dimensions to map to the x/y pixels on the matrix.  We'll
// use the z-axis for "time".  speed determines how fast time moves forward.  Try
// 1 for a very slow moving effect, or 60 for something that ends up looking like
// water.
uint16_t speed = 20; // speed is set dynamically once we've started up

// Scale determines how far apart the pixels in our noise matrix are.  Try
// changing these values around to see how it affects the motion of the display.  The
// higher the value of scale, the more "zoomed out" the noise iwll be.  A value
// of 1 will be so zoomed in, you'll mostly see solid colors.
uint16_t scale = 30; // scale is set dynamically once we've started up

// This is the array that we keep our computed noise values in
uint8_t noise[MAX_DIMENSION][MAX_DIMENSION];

CRGBPalette16 currentPalette( PartyColors_p );
uint8_t       colorLoop = 1;

void setup() {
  delay(3000);
  FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.setBrightness(BRIGHTNESS);

  // Initialize our coordinates to some random values
  x = random16();
  y = random16();
  z = random16();
}



// Fill the x/y array of 8-bit noise values using the inoise8 function.
void fillnoise8() {
  // If we're runing at a low "speed", some 8-bit artifacts become visible
  // from frame-to-frame.  In order to reduce this, we can do some fast data-smoothing.
  // The amount of data smoothing we're doing depends on "speed".
  uint8_t dataSmoothing = 0;
  if ( speed < 50) {
    dataSmoothing = 200 - (speed * 4);
  }

  for (int i = 0; i < MAX_DIMENSION; i++) {
    int ioffset = scale * i;
    for (int j = 0; j < MAX_DIMENSION; j++) {
      int joffset = scale * j;

      uint8_t data = inoise8(x + ioffset, y + joffset, z);

      // The range of the inoise8 function is roughly 16-238.
      // These two operations expand those values out to roughly 0..255
      // You can comment them out if you want the raw noise data.
      data = qsub8(data, 16);
      data = qadd8(data, scale8(data, 39));

      if ( dataSmoothing ) {
        uint8_t olddata = noise[i][j];
        uint8_t newdata = scale8( olddata, dataSmoothing) + scale8( data, 256 - dataSmoothing);
        data = newdata;
      }

      noise[i][j] = data;
    }
  }

  z += speed;

  // apply slow drift to X and Y, just for visual variation.
  x += speed / 8;
  y -= speed / 16;
}

void mapNoiseToLEDsUsingPalette()
{
  static uint8_t ihue = 0;

  for (int i = 0; i < kMatrixWidth; i++) {
    for (int j = 0; j < kMatrixHeight; j++) {
      // We use the value at the (i,j) coordinate in the noise
      // array for our brightness, and the flipped value from (j,i)
      // for our pixel's index into the color palette.

      uint8_t index = noise[j][i];
      uint8_t bri =   noise[i][j];

      // if this palette is a 'loop', add a slowly-changing base value
      if ( colorLoop) {
        index += ihue;
      }

      // brighten up, as the color palette itself often contains the
      // light/dark dynamic range desired
      if ( bri > 127 ) {
        bri = 255;
      } else {
        bri = dim8_raw( bri * 2);
      }

      CRGB color = ColorFromPalette( currentPalette, index, bri);
      leds[XY(i, j)] = color;
    }
  }

  ihue += 1;
}

void loop() {
  // Periodically choose a new palette, speed, and scale
  ChangePaletteAndSettingsPeriodically();

  // generate noise data
  fillnoise8();

  // convert the noise data to colors in the LED array
  // using the current palette
  mapNoiseToLEDsUsingPalette();

  FastLED.show();
  // delay(10);
}



// There are several different palettes of colors demonstrated here.
//
// FastLED provides several 'preset' palettes: RainbowColors_p, RainbowStripeColors_p,
// OceanColors_p, CloudColors_p, LavaColors_p, ForestColors_p, and PartyColors_p.
//
// Additionally, you can manually define your own color palettes, or you can write
// code that creates color palettes on the fly.

// 1 = 5 sec per palette
// 2 = 10 sec per palette
// etc
#define HOLD_PALETTES_X_TIMES_AS_LONG 1

void ChangePaletteAndSettingsPeriodically()
{
  uint8_t secondHand = ((millis() / 1000) / HOLD_PALETTES_X_TIMES_AS_LONG) % 60;
  static uint8_t lastSecond = 99;

  if ( lastSecond != secondHand) {
    lastSecond = secondHand;
    if ( secondHand ==  0)  {
      currentPalette = RainbowColors_p;
      speed = 20;
      scale = 30;
      colorLoop = 1;
    }
    if ( secondHand ==  5)  {
      SetupPurpleAndGreenPalette();
      speed = 10;
      scale = 50;
      colorLoop = 1;
    }
    if ( secondHand == 10)  {
      SetupBlackAndWhiteStripedPalette();
      speed = 20;
      scale = 30;
      colorLoop = 1;
    }
    if ( secondHand == 15)  {
      currentPalette = ForestColors_p;
      speed =  8;
      scale = 120;
      colorLoop = 0;
    }
    if ( secondHand == 20)  {
      currentPalette = CloudColors_p;
      speed =  4;
      scale = 30;
      colorLoop = 0;
    }
    if ( secondHand == 25)  {
      currentPalette = LavaColors_p;
      speed =  8;
      scale = 50;
      colorLoop = 0;
    }
    if ( secondHand == 30)  {
      currentPalette = OceanColors_p;
      speed = 20;
      scale = 90;
      colorLoop = 0;
    }
    if ( secondHand == 35)  {
      currentPalette = PartyColors_p;
      speed = 20;
      scale = 30;
      colorLoop = 1;
    }
    if ( secondHand == 40)  {
      SetupRandomPalette();
      speed = 20;
      scale = 20;
      colorLoop = 1;
    }
    if ( secondHand == 45)  {
      SetupRandomPalette();
      speed = 50;
      scale = 50;
      colorLoop = 1;
    }
    if ( secondHand == 50)  {
      SetupRandomPalette();
      speed = 90;
      scale = 90;
      colorLoop = 1;
    }
    if ( secondHand == 55)  {
      currentPalette = RainbowStripeColors_p;
      speed = 30;
      scale = 20;
      colorLoop = 1;
    }
  }
}

// This function generates a random palette that's a gradient
// between four different colors.  The first is a dim hue, the second is
// a bright hue, the third is a bright pastel, and the last is
// another bright hue.  This gives some visual bright/dark variation
// which is more interesting than just a gradient of different hues.
void SetupRandomPalette()
{
  currentPalette = CRGBPalette16(
                     CHSV( random8(), 255, 32),
                     CHSV( random8(), 255, 255),
                     CHSV( random8(), 128, 255),
                     CHSV( random8(), 255, 255));
}

// This function sets up a palette of black and white stripes,
// using code.  Since the palette is effectively an array of
// sixteen CRGB colors, the various fill_* functions can be used
// to set them up.
void SetupBlackAndWhiteStripedPalette()
{
  // 'black out' all 16 palette entries...
  fill_solid( currentPalette, 16, CRGB::Black);
  // and set every fourth one to white.
  currentPalette[0] = CRGB::White;
  currentPalette[4] = CRGB::White;
  currentPalette[8] = CRGB::White;
  currentPalette[12] = CRGB::White;

}

// This function sets up a palette of purple and green stripes.
void SetupPurpleAndGreenPalette()
{
  CRGB purple = CHSV( HUE_PURPLE, 255, 255);
  CRGB green  = CHSV( HUE_GREEN, 255, 255);
  CRGB black  = CRGB::Black;

  currentPalette = CRGBPalette16(
                     green,  green,  black,  black,
                     purple, purple, black,  black,
                     green,  green,  black,  black,
                     purple, purple, black,  black );
}


//
// Mark's xy coordinate mapping code.  See the XYMatrix for more information on it.
//
uint16_t XY( uint8_t x, uint8_t y)
{
  uint16_t i;
  if ( kMatrixSerpentineLayout == false) {
    i = (y * kMatrixWidth) + x;
  }
  if ( kMatrixSerpentineLayout == true) {
    if ( y & 0x01) {
      // Odd rows run backwards
      uint8_t reverseX = (kMatrixWidth - 1) - x;
      i = (y * kMatrixWidth) + reverseX;
    } else {
      // Even rows run forwards
      i = (y * kMatrixWidth) + x;
    }
  }
  return i;
}

 

eagler8

实验场景图  动态图

 

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十五：随机追逐的彗星效果

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十五：随机追逐的彗星效果
*/

#include <WS2812FX.h>

#define LED_COUNT 256
#define LED_PIN   6

WS2812FX ws2812fx = WS2812FX(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  Serial.begin(115200);

  ws2812fx.init();
  ws2812fx.setBrightness(25);

  // segment 0 is the builtin comet effect
  ws2812fx.setSegment(0, 0, LED_COUNT / 2 - 1, FX_MODE_COMET,  RED, 1000, false);

  // segment 1 is our custom effect
  ws2812fx.setCustomMode(myCustomEffect);
  ws2812fx.setSegment(1, LED_COUNT / 2, LED_COUNT - 1,   FX_MODE_CUSTOM, RED, 50, false);

  ws2812fx.start();
}

void loop() {
  ws2812fx.service();
}

uint16_t myCustomEffect(void) { // random chase
  WS2812FX::Segment* seg = ws2812fx.getSegment(); // get the current segment
  for (uint16_t i = seg->stop; i > seg->start; i--) {
    ws2812fx.setPixelColor(i, ws2812fx.getPixelColor(i - 1));
  }
  uint32_t color = ws2812fx.getPixelColor(seg->start + 1);
  int r = random(6) != 0 ? (color >> 16 & 0xFF) : random(256);
  int g = random(6) != 0 ? (color >> 8  & 0xFF) : random(256);
  int b = random(6) != 0 ? (color       & 0xFF) : random(256);
  ws2812fx.setPixelColor(seg->start, r, g, b);
  return seg->speed; // return the delay until the next animation step (in msec)
}

 

eagler8

实验场景图

 

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十六：WS2812FX库最简单的程序形式

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十六：WS2812FX库最简单的程序形式
*/

#include <WS2812FX.h> //导入库
#define LED_COUNT 256 //WS2812B LED数量
#define LED_PIN    6 //WS2812B LED接脚

WS2812FX ws2812fx = WS2812FX(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  ws2812fx.init(); //初始化
  ws2812fx.setBrightness(255); //设置亮度（0-255）,可以控制总电流（重要！）
  ws2812fx.setSpeed(200); // 设置速度
  ws2812fx.setMode(FX_MODE_FIREWORKS_RANDOM);// 设置模式(内置63种模式)
  ws2812fx.start(); //启动
}

void loop() {
  ws2812fx.service(); //循环运行
}

 

eagler8

实验场景图

 

 

eagler8

通过将 LED 串分成段（最多 10 个）并独立编程每个段，可以创建更复杂的效果。使用setSegment()函数对每个段的模式、颜色、速度和方向（正常或反向）进行编程：

• 1. setSegment(segment index, start LED, stop LED, mode, color, speed, reverse);

  复制代码

 

请注意，某些效果使用不止一种颜色（最多三种），并通过指定颜色数组进行编程：

 

• 1. setSegment(segment index, start LED, stop LED, mode, colors[], speed, reverse);

  复制代码

 

1. //将 LED 串分成两个独立的部分
2. uint32_t colours[] = {RED, GREEN};
3. ws2812fx.setSegment( 0 , 0 , (LED_COUNT/ 2 )- 1 , FX_MODE_BLINK, colors, 1000 , false );
4. ws2812fx.setSegment( 1 , LED_COUNT/ 2 , LED_COUNT- 1 , FX_MODE_BLINK, COLORS(ORANGE, PURPLE), 1000 , false );

复制代码

eagler8

内置效果清单
静态- 不闪烁。只是普通的旧静态灯。
闪烁- 正常闪烁。50% 开/关时间。
呼吸- 众所周知的 i-Devices 的“待机呼吸”。固定速度。
颜色擦除- 依次点亮所有 LED。然后按顺序关闭它们。重复。
颜色擦除反转 - 与 Color Wipe 相同，但交换开/关颜色。
颜色擦除反向 - 依次点亮所有 LED。然后以相反的顺序关闭它们。重复。
颜色擦除反向反向 - 与 上条相同，除了交换开/关颜色。
随机颜色擦除- 将所有 LED 依次变为随机颜色。然后用另一种颜色重新开始。
随机颜色- 以一种随机颜色点亮所有 LED。然后将它们切换到下一个随机颜色。
单动态- 以随机颜色点亮每个 LED。将一个随机的 LED 一个接一个地更改为随机颜色。
多动态- 以随机颜色点亮每个 LED。同时将所有 LED 更改为新的随机颜色。
彩虹- 通过彩虹一次循环所有 LED。
彩虹循环- 在整个 LED 串上循环彩虹。
扫描- 来回运行单个像素。
双扫描- 以相反的方向来回运行两个像素。
淡入淡出- 使 LED 灯再次亮起和（几乎）熄灭。
剧院追逐 - 剧院式爬行灯。受 Adafruit 示例的启发。
剧院追逐彩虹- 具有彩虹效果的剧院式爬行灯。受 Adafruit 示例的启发。
行车灯- 带平滑正弦过渡的行车灯效果。
闪烁- 使多个 LED 闪烁、重置、重复。
闪烁随机 - 以随机颜色闪烁几个 LED，重置，重复。
闪烁淡入淡出 - 闪烁几个 LED，然后逐渐消失。
19 / 5000
翻译结果
闪烁淡入淡出随机  - 以随机颜色闪烁几个 LED，然后逐渐消失。
闪烁- 一次闪烁一个 LED。
Flash Sparkle - 以所选颜色点亮所有 LED。随机闪烁单个白色像素。
Hyper Sparkle - 像闪光一样。更多的闪光。
频闪- 经典频闪效果。
频闪彩虹- 经典频闪效果。骑自行车穿过彩虹。
Multi Strobe - 具有不同频闪次数和暂停的频闪效果，由速度设置控制。
闪烁彩虹- 经典闪烁效果。骑自行车穿过彩虹。
Chase White - 在白色上运行的颜色。
Chase Color - 白色在颜色上运行。
Chase Random - 白色运行，然后是随机颜色。
Chase Rainbow - 白色在彩虹上奔跑。
Chase Flash - 白色闪烁彩色。
Chase Flash Random - 白色闪烁，然后是随机颜色。
Chase Rainbow White - 运行在白色的彩虹。
Chase Blackout - 黑色在彩色上运行。
Chase Blackout Rainbow - 黑色在彩虹上奔跑。
随机颜色扫描- 从条带的开始和结束交替引入随机颜色。
运行颜色- 交替运行的颜色/白色像素。
Running Red Blue - 交替运行红色/蓝色像素。
随机运行- 随机彩色像素运行。
Larson 扫描仪- KITT
Comet - 从一端发射彗星。
烟花- 烟花火花。
Fireworks Random - 随机彩色烟花火花。
圣诞快乐- 交替运行绿色/红色像素。
火焰闪烁- 火焰闪烁效果。就像在狂风中。
Fire Flicker (soft) - 火焰闪烁效果。跑得更慢/更软。
Fire Flicker (intense) - 火焰闪烁效果。颜色范围更广。
Circus Combustus - 交替运行的白色/红色/黑色像素。
万圣节- 交替运行橙色/紫色像素。
双色追逐- 两个 LED 在背景色上运行。
三色追逐- 交替运行三个彩色像素。
TwinkleFOX - 灯光随机淡入淡出。
通过 63.自定义- 最多八个用户创建的自定义效果。