灯带代码实现

#include "FastLED.h"            // FastLED库#define NUM_LEDS 60             // LED灯珠数量
#define DATA_PIN 3              // Arduino输出控制信号引脚
#define LED_TYPE WS2812         // LED灯带型号
#define COLOR_ORDER GRB         // RGB灯珠中红色、绿色、蓝色LED的排列顺序uint8_t max_bright = 100;       // LED亮度控制变量，可使用数值为 0 ～ 255， 数值越大则光带亮度越高CRGB leds[NUM_LEDS];            // 建立光带ledsvoid led_rainbow_loop(void){FastLED.clear();FastLED.show();delay(500);fill_solid(leds, 60, CRGB::Red);FastLED.show();delay(1000);                     // 等待1秒fill_solid(leds, 60, CRGB::Orange);FastLED.show();delay(1000);                     // 等待1秒fill_solid(leds, 60, CRGB::Yellow);FastLED.show();delay(1000);                     // 等待1秒fill_solid(leds, 60, CRGB::Green);FastLED.show();delay(1000);                     // 等待1秒fill_solid(leds, 60, CRGB::Cyan);FastLED.show();delay(1000);                     // 等待1秒fill_solid(leds, 60, CRGB::Blue);FastLED.show();delay(1000);                     // 等待1秒fill_solid(leds, 60, CRGB::Purple);FastLED.show();delay(1000);                     // 等待1秒
}void led_rainbow_flowing(void)
{FastLED.clear();FastLED.show();delay(500);int i = 0,loop_count = 0;if(NUM_LEDS%7 == 0){loop_count = NUM_LEDS/7;}else{loop_count = NUM_LEDS/7+1;}for(i=0; i<loop_count; i++){leds[i*7] = CRGB::Red;FastLED.show();delay(200);if(i*7+1>=NUM_LEDS) {break;}leds[i*7+1] = CRGB::Orange;FastLED.show();delay(200);if(i*7+2>=NUM_LEDS) {break;}leds[i*7+2] = CRGB::Yellow;FastLED.show();delay(200);if(i*7+3>=NUM_LEDS) {break;}leds[i*7+3] = CRGB::Green;FastLED.show();delay(200);if(i*7+4>=NUM_LEDS) {break;}leds[i*7+4] = CRGB::Cyan;FastLED.show();delay(200);if(i*7+5>=NUM_LEDS) {break;}leds[i*7+5] = CRGB::Blue;FastLED.show();delay(200);if(i*7+6>=NUM_LEDS) {break;}leds[i*7+6] = CRGB::Purple;FastLED.show();delay(200);if(i*7+7>=NUM_LEDS) {break;}}}void led_rainbow_static(void){FastLED.clear();FastLED.show();delay(500);fill_rainbow(leds, 60, 0, 15);FastLED.show();delay(1000);
}void setup() { LEDS.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);  // 初始化光带 FastLED.setBrightness(max_bright);                            // 设置光带亮度
}void loop() { while(1){led_rainbow_flowing();led_rainbow_static();led_rainbow_loop();}
}

#include <Adafruit_NeoPixel.h>//灯带库函数
#include<ctime>
#define PIN D1//定义引脚#define NUMPIXELS 29//定义led灯数量Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);//定义灯带（确定灯长，输出口，输出规则）int delayval2 = 40; 
void setup(){srand((unsigned)time(NULL));	//设置随机数pixels.setBrightness(25);               //设置灯带亮度pixels.begin();                        //NeoPixel输出准备数据引脚
}
void loop() {uint32_t light2c = pixels.Color(rand()%255,rand()%255,rand()%255);//设置灯带RGB颜色int light2bright = 10;for(int i=0;i<NUMPIXELS;i++){pixels.setPixelColor(i,light2c);//设置第i盏灯为light2c色）pixels.show();//更新灯带}while(true){light2bright+=10;pixels.setBrightness(light2bright);//设置灯带亮度pixels.show();delay(delayval2);if(light2bright>=200)break;}while(true){light2bright-=10;pixels.setBrightness(light2bright);pixels.show();delay(delayval2);if(light2bright<=10)break;}
}