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）实验一百九十九：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 可编程硬屏模块知识点：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。WS2812B灯屏电原理参考图实验涉及到的几个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【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);
}
}
Arduino实验场景图Arduino实验场景图2【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
}
Arduino实验场景图【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六：多彩流水灯变幻彩虹灯Arduino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
项目程序之六：多彩流水灯变幻彩虹灯
*/
#include <Adafruit_NeoPixel.h>
//needed for the WS2812
#include <avr/pgmspace.h>
//needed for PROGMEM
#define PIN 6
//Pin 1 is DATA In on the bottom Ring
#define BRIGHTNESS 255
// brightness reduced
//Lookup for the Candle light
const unsigned int candles[] PROGMEM =
{
15, 10, 48, 45, 36, 19, 59, 29, 5, 43, 41, 39, 24, 3, 61
};
Adafruit_NeoPixel strip = Adafruit_NeoPixel(255, PIN, NEO_GRB + NEO_KHZ800);
// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.
Avoid connecting
// on a live circuit...if you must, connect GND first.
void setup() {
pinMode(PIN, OUTPUT);
strip.begin();
strip.setBrightness(BRIGHTNESS); // set brightness
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
tree();
delay(100);
colorcrazy();
theaterChaseRainbow(50);
comet();
warpdrive();
warpdrive();
rainbowCycle(1);
rainbow(5);
rainbow(5);
rainbow(5);
colorWipe(strip.Color(255, 0, 0), 50); // Red
colorWipe(strip.Color(0, 255, 0), 50); // Green
colorWipe(strip.Color(0, 0, 255), 50); // Blue
//
//
//
cometr();
//Tree light:
//
//
warpdrive();
//
//
//
comet();
/*
// Some example procedures showing how to display to the pixels:
colorWipe(strip.Color(255, 0, 0), 50); // Red
colorWipe(strip.Color(0, 255, 0), 50); // Green
colorWipe(strip.Color(0, 0, 255), 50); // Blue
// Send a theater pixel chase in...
theaterChase(strip.Color(127, 127, 127), 50); // White
theaterChase(strip.Color(127,
0,
0), 50); // Red
theaterChase(strip.Color(
0,
0, 127), 50); // Blue
rainbow(20);
rainbowCycle(20);
theaterChaseRainbow(50);
*/
}
//Sub-----------------------------------------------------------------------
//Comet
void comet() {
for (uint16_t i = strip.numPixels(); i > 0; i--) {
strip.setPixelColor(i, strip.Color(0, 0, 255));
fadethemall(10);
fadethemall(10);
}
}
void cometr() {
for (uint16_t i = strip.numPixels(); i > 0; i--) {
strip.setPixelColor(i, strip.Color(255, 0, 0));
fadethemall(10);
fadethemall(10);
}
}
//From top down white pulses
void warpdrive() {
//Top Led
strip.setPixelColor(60, strip.Color(255, 255, 255));
strip.show();
//fade a bit
for (int i = 0; i < 20; i++)
{
fadethemall(20);
}
//8 Ring
for (int i = 52; i < 60; i++)
{
strip.setPixelColor(i, strip.Color(255, 255, 255));
}
strip.show();
//fade a bit
for (int i = 0; i < 20; i++)
{
fadethemall(20);
}
//12 Ring
for (int i = 40; i < 52; i++)
{
strip.setPixelColor(i, strip.Color(255, 255, 255));
}
strip.show();
//fade a bit
for (int i = 0; i < 20; i++)
{
fadethemall(20);
}
//16 Ring
for (int i = 24; i < 40; i++)
{
strip.setPixelColor(i, strip.Color(255, 255, 255));
}
strip.show();
//fade a bit
for (int i = 0; i < 20; i++)
{
fadethemall(20);
}
//24 Ring
for (int i = 0; i < 24; i++)
{
strip.setPixelColor(i, strip.Color(255, 255, 255));
}
strip.show();
//fade a bit
for (int i = 0; i < 20; i++)
{
fadethemall(20);
}
//Extra by John Kerr
strip.setPixelColor(60, strip.Color(0, 0, 0));
strip.show();
//fade a bit
for (int i = 0; i < 20; i++)
{
fadethemall(20);
}
}
//This reduces the brightness of all leds
void fadethemall(uint8_t wait) {
for (uint16_t i = 0; i < strip.numPixels(); i++) {
uint32_t color = strip.getPixelColor(i);
int r;
int g;
int b;
r = (uint8_t)(color >> 16);
g = (uint8_t)(color >>
8);
b = (uint8_t)color;
if (r > 0)
{
r = r - 1;
}
else
{
r = 0;
}
if (g > 0)
{
g = g - 1;
}
else
{
g = 0;
}
if (b > 0)
{
b = b - 1;
}
else
{
b = 0;
}
strip.setPixelColor(i, strip.Color(r, g, b));
}
strip.show();
delay(20);
}
//This drives the WS2812 in a crazy pattern, fun!
void colorcrazy() {
colorWipe(strip.Color(255, 0, 0), 25); // Red
colorWipe(strip.Color(0, 255, 0), 25); // Green
colorWipe(strip.Color(0, 0, 255), 25); // Blue
theaterChaseRainbow(5);
}
//This lights up the tree in green, then add the white "candles"
void tree() {
colorWipe(strip.Color(0, 50, 0), 50); // Green
//light "candles"
//Show the S:
for (int i = 0; i < 16; i++)
{
strip.setPixelColor(pgm_read_word(&candles) - 1, strip.Color(255, 255, 255));
strip.show();
delay(20);
}
}
// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for (uint16_t i = 0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(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(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(20);
}
}
//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
for (int j = 0; j < 10; j++) { //do 10 cycles of chasing
for (int q = 0; q < 3; q++) {
for (int i = 0; i < strip.numPixels(); i = i + 3) {
strip.setPixelColor(i + q, c);
//turn every third pixel on
}
strip.show();
delay(20);
for (int i = 0; i < strip.numPixels(); i = i + 3) {
strip.setPixelColor(i + q, 0);
//turn every third pixel off
}
}
}
}
//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
for (int j = 0; j < 256; j++) {
// cycle all 256 colors in the wheel
for (int q = 0; q < 3; q++) {
for (int i = 0; i < strip.numPixels(); i = i + 3) {
strip.setPixelColor(i + q, Wheel( (i + j) % 255)); //turn every third pixel on
}
strip.show();
delay(20);
for (int i = 0; i < strip.numPixels(); i = i + 3) {
strip.setPixelColor(i + q, 0);
//turn every third pixel off
}
}
}
}
// 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);
} 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);
}
}
Arduino实验场景图}