【Arduino】168种传感器系列实验（214）---8x32位全彩WS2812B屏

eagler8 · 发表于 2022-10-21 18:01:18

37款传感器与模块的提法，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，这里准备逐一动手试试多做实验，不管成功与否，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）
实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏可编程硬屏模块

eagler8 · 发表于 2022-10-21 18:11:03

eagler8 · 发表于 2022-10-21 18:15:40

WS2812B灯屏电原理参考图

brianlee · 发表于 2022-10-21 18:17:04

系统教程吗。
有没有地方有微信小程序的源代码学习？

eagler8 · 发表于 2022-10-21 18:17:52

WS2812B主要特点
智能反接保护，电源反接不会损坏IC。
IC控制电路与LED点光源公用一个电源。
控制电路与RGB芯片集成在一个5050封装的元器件中，构成一个完整的外控像素点。
内置信号整形电路，任何一个像素点收到信号后经过波形整形再输出，保证线路波形畸变不会累加。
内置上电复位和掉电复位电路。
每个像素点的三基色颜色可实现256级亮度显示，完成16777216种颜色的全真色彩显示，扫描频率不低于400Hz/s。
串行级联接口，能通过一根信号线完成数据的接收与解码。
任意两点传传输距离在不超过5米时无需增加任何电路。
当刷新速率30帧/秒时，级联数不小于1024点。
数据发送速度可达800Kbps。
光的颜色高度一致，性价比高。

主要应用领域
LED全彩发光字灯串,LED全彩模组， LED全彩软灯条硬灯条,LED护栏管。
LED点光源,LED像素屏,LED异形屏，各种电子产品，电器设备跑马灯。

eagler8 · 发表于 2022-10-21 18:18:46

brianlee 发表于 2022-10-21 18:17
系统教程吗。
有没有地方有微信小程序的源代码学习？

谢谢，在做系列实验

eagler8 · 发表于 2022-10-21 18:20:09

brianlee 发表于 2022-10-21 18:17
系统教程吗。
有没有地方有微信小程序的源代码学习？

百度——微信小程序，你想找的，好像都有

eagler8 · 发表于 2022-10-21 18:31:20

实验涉及到的几个WS2812B相关库
安装FastLED库，工具—管理库—搜索FastLED—安装
安装NeoPixel库，工具—管理库—搜索NeoPixel—安装
安装Adafruit_NeoPixel库，
下载https://github.com/adafruit/Adafruit_NeoPixel

eagler8 · 发表于 2022-10-21 18:48:29

eagler8 · 发表于 2022-10-22 10:15:32

  【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
  项目程序之一：LED循环绿色快闪测试

/*
【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
项目程序之一：LED循环绿色快闪测试
*/
#include <Adafruit_NeoPixel.h>
#define PIN 6
#define MAX_LED 255
#define ADD true
#define SUB false
int val = 0;
boolean stat = ADD;
Adafruit_NeoPixel strip = Adafruit_NeoPixel( MAX_LED, PIN, NEO_RGB + NEO_KHZ800 );
void setup() {
strip.begin();
strip.show();
}
void loop() {
uint8_t i, a = 0;
uint32_t color = strip.Color(255, 0, 0);
while (a < 256)
{
for (i = 0; i < 255; i++)
{
if (i == a) strip.setPixelColor(i, color);
else strip.setPixelColor(i, 0);
}
strip.show();
delay(2);
a++;
}
}

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eagler8 · 发表于 2022-10-22 10:15:53

wanccx 发表于 2022-10-22 08:03
进来学习下

有空多交流

eagler8 · 发表于 2022-10-22 10:22:52

实验场景图

eagler8 · 发表于 2022-10-22 10:34:28

  【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
  项目程序之二：全屏LED呼吸灯

/*
【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
项目程序之二：全屏LED呼吸灯
*/
#include <FastLED.h>
#define LED_PIN 6
#define NUM_LEDS 256
CRGB leds[NUM_LEDS];
void setup() {
FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
FastLED.setBrightness(20);
}
int h = 0;
void loop() {
for (int i = 0; i < NUM_LEDS; i++) {
leds[i] = CHSV( h, 255, 255);
FastLED.show();
}
delay(1);
h = (h + 3) % 255;
}

复制代码

eagler8 · 发表于 2022-10-22 10:36:22

实验场景图

eagler8 · 发表于 2022-10-22 11:45:26

  【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
  项目程序之三：简单的三色流水灯

/*
【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
项目程序之三：简单的三色流水灯
*/
#include <FastLED.h>
#define LED_PIN 6
#define NUM_LEDS 256
CRGB leds[NUM_LEDS];
void setup() {
FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
FastLED.setBrightness(250);
}
void loop() {
for (int i = 0; i < NUM_LEDS; i++) {
leds[i] = CRGB::Red;
FastLED.show();
delay(1);
leds[i] = CRGB::Black;
}
for (int i = NUM_LEDS; i > 0; i--) {
leds[i] = CRGB::Blue;
FastLED.show();
delay(1);
leds[i] = CRGB::Black;
}
for (int i = 0; i < NUM_LEDS; i++) {
leds[i] = CRGB::Green;
FastLED.show();
delay(1);
leds[i] = CRGB::Black;
}
for (int i = NUM_LEDS; i > 0; i--) {
leds[i] = CRGB::Blue;
FastLED.show();
delay(1);
leds[i] = CRGB::Black;
}
}

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eagler8 · 发表于 2022-10-22 11:56:45

实验场景图动态图

eagler8 · 发表于 2022-10-22 13:47:33

  【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
  项目程序之四：循环快扫红绿蓝色LED满屏流水彩虹灯

/*
【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
项目程序之四：循环快扫红绿蓝色LED满屏流水彩虹灯
*/
#include <Adafruit_NeoPixel.h>
#define PIN 6
#define BRIGHTNESS 256
Adafruit_NeoPixel strip = Adafruit_NeoPixel(256, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
strip.setBrightness(30);
strip.begin();
strip.show();
}
void loop() {
colorWipe(strip.Color(150, 0, 0), 50); // Red
colorWipe(strip.Color(0, 150, 0), 50); // Green
colorWipe(strip.Color(0, 0, 150), 50); // Blue
colorWipe(strip.Color(150, 150, 150), 50); // BlueWite
rainbowCycle(1);
}
void colorWipe(uint32_t c, uint8_t wait) {
for (uint16_t i = 0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(3);
}
}
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(3);
}
}
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(3);
}
}
uint32_t Wheel(byte WheelPos) {
if (WheelPos < 85) {
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
} else if (WheelPos < 170) {
WheelPos -= 85;
return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
} else {
WheelPos -= 170;
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
}

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eagler8 · 发表于 2022-10-22 13:49:34

实验场景图动态图

eagler8 · 发表于 2022-10-22 13:51:44

实验场景图动态图2

eagler8 · 发表于 2022-10-22 15:04:28

  【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
  项目程序之五：255位循环流水变幻呼吸灯
/*
  【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
  项目程序之五：255位循环流水变幻呼吸灯
*/

// NeoPixel test program showing use of the WHITE channel for RGBW
// pixels only (won't look correct on regular RGB NeoPixel strips).

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN    6

// How many NeoPixels are attached to the Arduino?
#define LED_COUNT  255

// NeoPixel brightness, 0 (min) to 255 (max)
#define BRIGHTNESS 50

// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRBW + NEO_KHZ800);
// Argument 1 = Number of pixels in NeoPixel strip
// Argument 2 = Arduino pin number (most are valid)
// Argument 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)

void setup() {
  // These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
  // Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  // END of Trinket-specific code.

  strip.begin();          // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();          // Turn OFF all pixels ASAP
  strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)
}

void loop() {
  // Fill along the length of the strip in various colors...
  colorWipe(strip.Color(255, 0, 0)    , 50); // Red
  colorWipe(strip.Color(  0, 255, 0)    , 50); // Green
  colorWipe(strip.Color(  0, 0, 255)    , 50); // Blue
  colorWipe(strip.Color(  0, 0, 0, 255), 50); // True white (not RGB white)

  whiteOverRainbow(75, 5);

  pulseWhite(5);

  rainbowFade2White(3, 3, 1);
}

// Fill strip pixels one after another with a color. Strip is NOT cleared
// first; anything there will be covered pixel by pixel. Pass in color
// (as a single 'packed' 32-bit value, which you can get by calling
// strip.Color(red, green, blue) as shown in the loop() function above),
// and a delay time (in milliseconds) between pixels.
void colorWipe(uint32_t color, int wait) {
  for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
strip.setPixelColor(i, color);       //  Set pixel's color (in RAM)
strip.show();                         //  Update strip to match
delay(4);                         //  Pause for a moment
  }
}

void whiteOverRainbow(int whiteSpeed, int whiteLength) {

  if(whiteLength >= strip.numPixels()) whiteLength = strip.numPixels() - 1;

  int    head       = whiteLength - 1;
  int    tail       = 0;
  int    loops       = 3;
  int    loopNum    = 0;
  uint32_t lastTime    = millis();
  uint32_t firstPixelHue = 0;

  for(;;) { // Repeat forever (or until a 'break' or 'return')
for(int i=0; i<strip.numPixels(); i++) {  // For each pixel in strip...
   if(((i >= tail) && (i <= head)) ||    //  If between head & tail...
      ((tail > head) && ((i >= tail) || (i <= head)))) {
      strip.setPixelColor(i, strip.Color(0, 0, 0, 255)); // Set white
   } else {                                           // else set rainbow
      int pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
      strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
   }
}

strip.show(); // Update strip with new contents
// There's no delay here, it just runs full-tilt until the timer and
// counter combination below runs out.

firstPixelHue += 40; // Advance just a little along the color wheel

if((millis() - lastTime) > whiteSpeed) { // Time to update head/tail?
   if(++head >= strip.numPixels()) {    // Advance head, wrap around
      head = 0;
      if(++loopNum >= loops) return;
   }
   if(++tail >= strip.numPixels()) {    // Advance tail, wrap around
      tail = 0;
   }
   lastTime = millis();                // Save time of last movement
}
  }
}

void pulseWhite(uint8_t wait) {
  for(int j=0; j<256; j++) { // Ramp up from 0 to 255
// Fill entire strip with white at gamma-corrected brightness level 'j':
strip.fill(strip.Color(0, 0, 0, strip.gamma8(j)));
strip.show();
delay(4);
  }

  for(int j=255; j>=0; j--) { // Ramp down from 255 to 0
strip.fill(strip.Color(0, 0, 0, strip.gamma8(j)));
strip.show();
delay(4);
  }
}

void rainbowFade2White(int wait, int rainbowLoops, int whiteLoops) {
  int fadeVal=0, fadeMax=100;

  // Hue of first pixel runs 'rainbowLoops' complete loops through the color
  // wheel. Color wheel has a range of 65536 but it's OK if we roll over, so
  // just count from 0 to rainbowLoops*65536, using steps of 256 so we
  // advance around the wheel at a decent clip.
  for(uint32_t firstPixelHue = 0; firstPixelHue < rainbowLoops*65536;
firstPixelHue += 256) {

for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...

   // Offset pixel hue by an amount to make one full revolution of the
   // color wheel (range of 65536) along the length of the strip
   // (strip.numPixels() steps):
   uint32_t pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());

   // strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
   // optionally add saturation and value (brightness) (each 0 to 255).
   // Here we're using just the three-argument variant, though the
   // second value (saturation) is a constant 255.
   strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue, 255,
      255 * fadeVal / fadeMax)));
}

strip.show();
delay(4);

if(firstPixelHue < 65536) {                            // First loop,
   if(fadeVal < fadeMax) fadeVal++;                      // fade in
} else if(firstPixelHue >= ((rainbowLoops-1) * 65536)) { // Last loop,
   if(fadeVal > 0) fadeVal--;                            // fade out
} else {
   fadeVal = fadeMax; // Interim loop, make sure fade is at max
}
  }

  for(int k=0; k<whiteLoops; k++) {
for(int j=0; j<256; j++) { // Ramp up 0 to 255
   // Fill entire strip with white at gamma-corrected brightness level 'j':
   strip.fill(strip.Color(0, 0, 0, strip.gamma8(j)));
   strip.show();
}
delay(20); // Pause 1 second
for(int j=255; j>=0; j--) { // Ramp down 255 to 0
   strip.fill(strip.Color(0, 0, 0, strip.gamma8(j)));
   strip.show();
}
  }

  delay(10); // Pause 1/2 second
}