【雕爷学编程】Arduino动手做（138）---64位WS2812点阵屏模块5
雕爷学编程,Arduino动手做,开源硬件,创客传感器,64位WS2812点阵屏模块
37款传感器与执行器的提法，在网络上广泛流传，其实Arduino能够兼容的传感器模块肯定是不止这37种的。鉴于本人手头积累了一些传感器和执行器模块，依照实践出真知（一定要动手做）的理念，以学习和交流为目的，这里准备逐一动手尝试系列实验，不管成功（程序走通）与否，都会记录下来—小小的进步或是搞不掂的问题，希望能够抛砖引玉。
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十四：将噪声数据转换为 LED 阵列中的动态颜色
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料+代码+图形+仿真）
实验一百四十六：64位WS2812B 8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十四：将噪声数据转换为 LED 阵列中的动态颜色
实验接线
Module UNO
VCC —— 3.3V
GND —— GND
DI —— D6
*/
#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 = 8;
// 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;
}
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十五： "太平洋"柔和的蓝绿色海浪
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十五： "太平洋"柔和的蓝绿色海浪
实验接线
Module UNO
VCC —— 3.3V
GND —— GND
DI —— D6
*/
#define FASTLED_ALLOW_INTERRUPTS 0
#include <FastLED.h>
FASTLED_USING_NAMESPACE
#define DATA_PIN 6
#define NUM_LEDS 64
#define MAX_POWER_MILLIAMPS 500
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
//////////////////////////////////////////////////////////////////////////
CRGB leds[NUM_LEDS];
void setup() {
delay( 3000); // 3 second delay for boot recovery, and a moment of silence
FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS)
.setCorrection( TypicalLEDStrip );
FastLED.setBrightness(30);
FastLED.setMaxPowerInVoltsAndMilliamps( 5, MAX_POWER_MILLIAMPS);
}
void loop()
{
EVERY_N_MILLISECONDS( 20) {
pacifica_loop();
FastLED.show();
}
}
//////////////////////////////////////////////////////////////////////////
//
// The code for this animation is more complicated than other examples, and
// while it is "ready to run", and documented in general, it is probably not
// the best starting point for learning. Nevertheless, it does illustrate some
// useful techniques.
//
//////////////////////////////////////////////////////////////////////////
//
// In this animation, there are four "layers" of waves of light.
//
// Each layer moves independently, and each is scaled separately.
//
// All four wave layers are added together on top of each other, and then
// another filter is applied that adds "whitecaps" of brightness where the
// waves line up with each other more. Finally, another pass is taken
// over the led array to 'deepen' (dim) the blues and greens.
//
// The speed and scale and motion each layer varies slowly within independent
// hand-chosen ranges, which is why the code has a lot of low-speed 'beatsin8' functions
// with a lot of oddly specific numeric ranges.
//
// These three custom blue-green color palettes were inspired by the colors found in
// the waters off the southern coast of California, https://goo.gl/maps/QQgd97jjHesHZVxQ7
//
CRGBPalette16 pacifica_palette_1 =
{ 0x000507, 0x000409, 0x00030B, 0x00030D, 0x000210, 0x000212, 0x000114, 0x000117,
0x000019, 0x00001C, 0x000026, 0x000031, 0x00003B, 0x000046, 0x14554B, 0x28AA50
};
CRGBPalette16 pacifica_palette_2 =
{ 0x000507, 0x000409, 0x00030B, 0x00030D, 0x000210, 0x000212, 0x000114, 0x000117,
0x000019, 0x00001C, 0x000026, 0x000031, 0x00003B, 0x000046, 0x0C5F52, 0x19BE5F
};
CRGBPalette16 pacifica_palette_3 =
{ 0x000208, 0x00030E, 0x000514, 0x00061A, 0x000820, 0x000927, 0x000B2D, 0x000C33,
0x000E39, 0x001040, 0x001450, 0x001860, 0x001C70, 0x002080, 0x1040BF, 0x2060FF
};
void pacifica_loop()
{
// Increment the four "color index start" counters, one for each wave layer.
// Each is incremented at a different speed, and the speeds vary over time.
static uint16_t sCIStart1, sCIStart2, sCIStart3, sCIStart4;
static uint32_t sLastms = 0;
uint32_t ms = GET_MILLIS();
uint32_t deltams = ms - sLastms;
sLastms = ms;
uint16_t speedfactor1 = beatsin16(3, 179, 269);
uint16_t speedfactor2 = beatsin16(4, 179, 269);
uint32_t deltams1 = (deltams * speedfactor1) / 256;
uint32_t deltams2 = (deltams * speedfactor2) / 256;
uint32_t deltams21 = (deltams1 + deltams2) / 2;
sCIStart1 += (deltams1 * beatsin88(1011, 10, 13));
sCIStart2 -= (deltams21 * beatsin88(777, 8, 11));
sCIStart3 -= (deltams1 * beatsin88(501, 5, 7));
sCIStart4 -= (deltams2 * beatsin88(257, 4, 6));
// Clear out the LED array to a dim background blue-green
fill_solid( leds, NUM_LEDS, CRGB( 2, 6, 10));
// Render each of four layers, with different scales and speeds, that vary over time
pacifica_one_layer( pacifica_palette_1, sCIStart1, beatsin16( 3, 11 * 256, 14 * 256), beatsin8( 10, 70, 130), 0 - beat16( 301) );
pacifica_one_layer( pacifica_palette_2, sCIStart2, beatsin16( 4, 6 * 256, 9 * 256), beatsin8( 17, 40, 80), beat16( 401) );
pacifica_one_layer( pacifica_palette_3, sCIStart3, 6 * 256, beatsin8( 9, 10, 38), 0 - beat16(503));
pacifica_one_layer( pacifica_palette_3, sCIStart4, 5 * 256, beatsin8( 8, 10, 28), beat16(601));
// Add brighter 'whitecaps' where the waves lines up more
pacifica_add_whitecaps();
// Deepen the blues and greens a bit
pacifica_deepen_colors();
}
// Add one layer of waves into the led array
void pacifica_one_layer( CRGBPalette16& p, uint16_t cistart, uint16_t wavescale, uint8_t bri, uint16_t ioff)
{
uint16_t ci = cistart;
uint16_t waveangle = ioff;
uint16_t wavescale_half = (wavescale / 2) + 20;
for ( uint16_t i = 0; i < NUM_LEDS; i++) {
waveangle += 250;
uint16_t s16 = sin16( waveangle ) + 32768;
uint16_t cs = scale16( s16 , wavescale_half ) + wavescale_half;
ci += cs;
uint16_t sindex16 = sin16( ci) + 32768;
uint8_t sindex8 = scale16( sindex16, 240);
CRGB c = ColorFromPalette( p, sindex8, bri, LINEARBLEND);
leds[i] += c;
}
}
// Add extra 'white' to areas where the four layers of light have lined up brightly
void pacifica_add_whitecaps()
{
uint8_t basethreshold = beatsin8( 9, 55, 65);
uint8_t wave = beat8( 7 );
for ( uint16_t i = 0; i < NUM_LEDS; i++) {
uint8_t threshold = scale8( sin8( wave), 20) + basethreshold;
wave += 7;
uint8_t l = leds[i].getAverageLight();
if ( l > threshold) {
uint8_t overage = l - threshold;
uint8_t overage2 = qadd8( overage, overage);
leds[i] += CRGB( overage, overage2, qadd8( overage2, overage2));
}
}
}
// Deepen the blues and greens
void pacifica_deepen_colors()
{
for ( uint16_t i = 0; i < NUM_LEDS; i++) {
leds[i].blue = scale8( leds[i].blue, 145);
leds[i].green = scale8( leds[i].green, 200);
leds[i] |= CRGB( 2, 5, 7);
}
}
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十六：简单的WS2812FX自动模式循环
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+图形编程+仿真编程）
实验一百四十六：64位WS2812B 8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十六：简单的WS2812FX自动模式循环
实验接线
Module UNO
VCC —— 3.3V
GND —— GND
DI —— D6
*/
#include <WS2812FX.h>
#define LED_COUNT 64
#define LED_PIN 6
#define TIMER_MS 5000
// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
// NEO_RGBW Pixels are wired for RGBW bitstream (NeoPixel RGBW products)
WS2812FX ws2812fx = WS2812FX(LED_COUNT, LED_PIN, NEO_RGB + NEO_KHZ800);
unsigned long last_change = 0;
unsigned long now = 0;
void setup() {
ws2812fx.init();
ws2812fx.setBrightness(25);
ws2812fx.setSpeed(1000);
ws2812fx.setColor(0x007BFF);
ws2812fx.setMode(FX_MODE_STATIC);
ws2812fx.start();
}
void loop() {
now = millis();
ws2812fx.service();
if(now - last_change > TIMER_MS) {
ws2812fx.setMode((ws2812fx.getMode() + 1) % ws2812fx.getModeCount());
last_change = now;
}
}
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十七：模拟的火焰山动画
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十七：模拟的火焰山动画
实验接线
Module UNO
VCC —— 3.3V
GND —— GND
DI —— D6
*/
#include "FastLED.h" // be sure to install and include the FastLED lib
#include <WS2812FX.h>
#define NUM_LEDS 64
#define LED_PIN 6
WS2812FX ws2812fx = WS2812FX(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);
// declare global parameters used by Fire2012
bool gReverseDirection = false;
void setup() {
Serial.begin(115200);
// init WS2812FX to use a custom effect
ws2812fx.init();
ws2812fx.setBrightness(25);
ws2812fx.setColor(BLUE);
ws2812fx.setSpeed(1000);
ws2812fx.setMode(FX_MODE_CUSTOM);
ws2812fx.setCustomMode(myCustomEffect);
ws2812fx.start();
}
void loop() {
ws2812fx.service();
}
// in the custom effect run the Fire2012 algorithm
uint16_t myCustomEffect() {
Fire2012();
// return the animation speed based on the ws2812fx speed setting
return (ws2812fx.getSpeed() / NUM_LEDS);
}
/*
paste in the Fire2012 code with a small edit at the end which uses the
setPixelColor() function to copy the color data to the ws2812fx instance.
*/
// Fire2012 by Mark Kriegsman, July 2012
// as part of "Five Elements" shown here: http://youtu.be/knWiGsmgycY
////
// This basic one-dimensional 'fire' simulation works roughly as follows:
// There's a underlying array of 'heat' cells, that model the temperature
// at each point along the line. Every cycle through the simulation,
// four steps are performed:
// 1) All cells cool down a little bit, losing heat to the air
// 2) The heat from each cell drifts 'up' and diffuses a little
// 3) Sometimes randomly new 'sparks' of heat are added at the bottom
// 4) The heat from each cell is rendered as a color into the leds array
// The heat-to-color mapping uses a black-body radiation approximation.
//
// Temperature is in arbitrary units from 0 (cold black) to 255 (white hot).
//
// This simulation scales it self a bit depending on NUM_LEDS; it should look
// "OK" on anywhere from 20 to 100 LEDs without too much tweaking.
//
// I recommend running this simulation at anywhere from 30-100 frames per second,
// meaning an interframe delay of about 10-35 milliseconds.
//
// Looks best on a high-density LED setup (60+ pixels/meter).
//
//
// There are two main parameters you can play with to control the look and
// feel of your fire: COOLING (used in step 1 above), and SPARKING (used
// in step 3 above).
//
// COOLING: How much does the air cool as it rises?
// Less cooling = taller flames. More cooling = shorter flames.
// Default 50, suggested range 20-100
#define COOLING 55
// SPARKING: What chance (out of 255) is there that a new spark will be lit?
// Higher chance = more roaring fire. Lower chance = more flickery fire.
// Default 120, suggested range 50-200.
#define SPARKING 120
void Fire2012()
{
// Array of temperature readings at each simulation cell
static byte heat[NUM_LEDS];
// Step 1. Cool down every cell a little
for ( int i = 0; i < NUM_LEDS; i++) {
heat[i] = qsub8( heat[i], random8(0, ((COOLING * 10) / NUM_LEDS) + 2));
}
// Step 2. Heat from each cell drifts 'up' and diffuses a little
for ( int k = NUM_LEDS - 1; k >= 2; k--) {
heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2] ) / 3;
}
// Step 3. Randomly ignite new 'sparks' of heat near the bottom
if ( random8() < SPARKING ) {
int y = random8(7);
heat[y] = qadd8( heat[y], random8(160, 255) );
}
// Step 4. Map from heat cells to LED colors
for ( int j = 0; j < NUM_LEDS; j++) {
CRGB color = HeatColor( heat[j]);
int pixelnumber;
if ( gReverseDirection ) {
pixelnumber = (NUM_LEDS - 1) - j;
} else {
pixelnumber = j;
}
// **** modified for use with WS2812FX ****
//leds[pixelnumber] = color;
ws2812fx.setPixelColor(pixelnumber, color.red, color.green, color.blue);
// **** modified for use with WS2812FX ****
}
}
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十八：随机追逐的彗星效果
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十八：随机追逐的彗星效果
实验接线
Module UNO
VCC —— 3.3V
GND —— GND
DI —— D6
*/
#include <WS2812FX.h>
#define LED_COUNT 64
#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)
}
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十九：自定义效果的演示
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百三十八：64位 WS2812B8*8 xRGB 5050 LED模块 ws2812s像素点阵屏
项目二十九：自定义效果的演示
实验接线
Module UNO
VCC —— 3.3V
GND —— GND
DI —— D6
*/
#include <WS2812FX.h>
//include the custom effects
//#include "custom/BlockDissolve.h"
#include "custom/DualLarson.h"
//#include "custom/MultiComet.h"
//#include "custom/Oscillate.h"
//#include "custom/RainbowLarson.h"
//#include "custom/RandomChase.h"
//#include "custom/TriFade.h"
//#include "custom/VUMeter.h"
#define LED_COUNT 64
#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);
// setup the custom effects
uint8_t dualLarsonMode = ws2812fx.setCustomMode(F("Dual Larson"), dualLarson);
uint32_t colors[] = {RED, BLUE, WHITE};
ws2812fx.setSegment(0, 0, LED_COUNT - 1, dualLarsonMode, colors, 2000, FADE_SLOW);
ws2812fx.start();
}
void loop() {
ws2812fx.service();
}
Arduino实验场景图
