很多人都会觉得闪电云应该要有声音，所以这里把怎么给闪电云加上声音的方法也大概也写一下吧。

给闪电云加声音需要额外购买一个模块ISD1820模块。

首先一般来说拿到手的模块是没有把喇叭焊起来的，所以需要自己焊接。

一般来说线上有横线的是负极，点的是正极

另外ISD1820会自带两个跳线，我们这里是没什么用的，就拔了就好。

然后对原有的电路进行改造，nano上之前应该还会空余一个GND，加上ISD1820上有两个VCC，恰好够所以就不需要扩展VCC和GND了。

然后需要对代码进行改造。

#include <Adafruit_NeoPixel.h>


#define PIXEL_PIN    6  //灯条链接引脚
#define SENSOR_PIN   9  //传感器链接引脚
#define SPEAKER_PIN  13  //录音模块的引脚

#define PIXEL_COUNT 8  //灯珠的个数

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800);

int randomNumber;






void setup() {
  
  pinMode(SPEAKER_PIN, OUTPUT);
  digitalWrite(SPEAKER_PIN, LOW);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'

  pinMode(SENSOR_PIN, INPUT);
  randomSeed(analogRead(0));

  Serial.begin(9600);

}

void loop() {


  if( digitalRead(SENSOR_PIN) == HIGH){
    digitalWrite(SPEAKER_PIN, HIGH);
    randomNumber = random(300);
    Serial.println(randomNumber % 61);
    thunder_strike(randomNumber % 61);

    delay(3000);
    digitalWrite(SPEAKER_PIN, LOW);

  }else{

    if(millis() % 100000 == 0){
      for(int i=20; i<100; i++){
        colorWipe(strip.Color(i,i-20,0),0);

      }
      for(int i=100; i>20; i--){
        colorWipe(strip.Color(i,i-20,0),0);

      }
      colorWipe(strip.Color(0,0,0),0);

      delay(3000);

    }

  }





}


void thunder_strike( int type) {
  if(type < 20){

        colorWipe_short(0, PIXEL_COUNT, strip.Color(73, 147, 255), 3);
        colorWipe(strip.Color(0, 0, 0), 0);
        delay(500);
        colorWipe_short(0, PIXEL_COUNT, strip.Color(73, 147, 255), 3);
        delay(20);
        colorWipe(strip.Color(0, 0, 0), 0);
        delay(500);

  }else if(type < 40){

        colorWipe(strip.Color(104, 94, 94), 3);
        colorWipe(strip.Color(0,0,0), 0);
        delay(500);
        colorWipe(strip.Color(104, 94, 94), 3);
        delay(20);
        colorWipe(strip.Color(0,0,0), 0);
        delay(500);
  }else if(type < 60){   
        colorWipe(strip.Color(181, 165, 95), 3);
        delay(1000);
        colorWipe(strip.Color(0,0,0), 0);
        delay(100);
        colorWipe(strip.Color(181, 165, 95), 3);
        delay(500);
        colorWipe(strip.Color(0,0,0), 0);
        delay(500);
  }else{
        rainbowCycle(5);
        colorWipe(strip.Color(0,0,0), 0);
  }
}


void colorWipe_short(uint16_t be, uint16_t en, uint32_t c, uint8_t wait){
  for (uint16_t i = be; i < en; i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }

}

// 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(wait);
  }
}

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(wait);
  }
}

// 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(wait);
  }
}

//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(wait);

      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(wait);

      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);
  }
  if (WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}

然后对原有的电路进行改造，nano上之前应该还会空余一个GND
不过这样做出来的声音会有些小，如果觉得不够的话就需要再加一个功放模块。但是接线之类的会变得复杂很多。