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物品清单
| 名称 | 规格 | 数量 |
|---|---|---|
| 开发板 | Arduino | 1 |
| 杜邦线 | 公公 母母 公母 | 若干 |
| 灯带 | 30/60珠 | 1 |
| 电源 | 5V 2000A左右 | 1 |
| 面包板 | 1 |
相关代码
相关库：FastLED
示例代码
#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#if defined(FASTLED_VERSION) && (FASTLED_VERSION < 3001000)
#warning "Requires FastLED 3.1 or later; check github for latest code."
#endif#define DATA_PIN 9
//#define CLK_PIN 4
#define LED_TYPE WS2812
#define COLOR_ORDER GRB
#define NUM_LEDS 60 //灯珠数量
CRGB leds[NUM_LEDS];#define BRIGHTNESS 96
#define FRAMES_PER_SECOND 120void setup() {delay(3000); // 3 second delay for recovery// tell FastLED about the LED strip configurationFastLED.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 controlFastLED.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 patternsvoid loop()
{// Call the current pattern function once, updating the 'leds' arraygPatterns[gCurrentPatternNumber]();// send the 'leds' array out to the actual LED stripFastLED.show(); // insert a delay to keep the framerate modestFastLED.delay(1000/FRAMES_PER_SECOND); // do some periodic updatesEVERY_N_MILLISECONDS( 20 ) { gHue++; } // slowly cycle the "base color" through the rainbowEVERY_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 endgCurrentPatternNumber = (gCurrentPatternNumber + 1) % ARRAY_SIZE( gPatterns);
}void rainbow()
{// FastLED's built-in rainbow generatorfill_rainbow( leds, NUM_LEDS, gHue, 7);
}void rainbowWithGlitter()
{// built-in FastLED rainbow, plus some random sparkly glitterrainbow();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 smoothlyfadeToBlackBy( leds, NUM_LEDS, 10);int pos = random16(NUM_LEDS);leds[pos] += CHSV( gHue + random8(64), 200, 255);
}void sinelon()
{// a colored dot sweeping back and forth, with fading trailsfadeToBlackBy( 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++) { //9948leds[i] = ColorFromPalette(palette, gHue+(i*2), beat-gHue+(i*10));}
}void juggle() {// eight colored dots, weaving in and out of sync with each otherfadeToBlackBy( leds, NUM_LEDS, 20);byte dothue = 0;for( int i = 0; i < 8; i++) {leds[beatsin16( i+7, 0, NUM_LEDS-1 )] |= CHSV(dothue, 200, 255);dothue += 32;}
}需要修改地方
#define DATA_PIN 9 //信号引脚
#define LED_TYPE WS2812 //灯带类型
#define COLOR_ORDER GRB //灯带灯排列顺序
#define NUM_LEDS 60 //灯珠数量
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