ESP8266 WS2812B 60灯珠拾音频谱灯渐变代码

以下是一个基于ESP8266和WS2812B的60个LED灯珠的拾音频谱灯渐变代码示例：

#include <FastLED.h>

#define NUM_LEDS 60
#define DATA_PIN 5
#define MIC_PIN A0

CRGB leds[NUM_LEDS];
uint8_t spectrumValue[7];
uint8_t spectrumAvg;

void setup() {
  FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(64);

  pinMode(MIC_PIN, INPUT);
  Serial.begin(115200);
}

void loop() {
  uint16_t sample;
  uint32_t sum = 0;
  uint8_t peak = 0;

  for (int i = 0; i < 7; i++) {
    sample = analogRead(MIC_PIN);
    sum += sample;

    if (sample > peak) {
      peak = sample;
    }
  }

  spectrumAvg = sum / 7;

  for (int i = 0; i < 7; i++) {
    spectrumValue[i] = map(analogRead(MIC_PIN), 0, 1023, 0, 255);
  }

  for (int i = 0; i < NUM_LEDS; i++) {
    uint8_t index = map(i, 0, NUM_LEDS, 0, 7);
    uint8_t value = spectrumValue[index];

    leds[i] = CHSV(map(value, 0, 255, 0, 160), 255, value);
  }

  FastLED.show();
  FastLED.delay(10);
}

此代码使用FastLED库来控制WS2812B LED灯珠，并使用ESP8266的模拟输入引脚来读取麦克风的音频输入。代码读取音频数据并将其映射到LED灯珠的颜色上，产生拾音频谱灯效果。