看到这样一个效果，于是想用arduino实现类似效果。需要的组件如下

1 arduino开发板

2 音频传感器

3 灯带

接线图如图

代码如下

#include <EEPROM.h>

#include <Adafruit_NeoPixel.h>

#define PIN 2	 // input pin Neopixel is attached to

#define NUMPIXELS      10 // number of neopixels in strip

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

int delayval = 1; // timing delay in milliseconds

int redColor = 0;
int greenColor = 0;
int blueColor = 0;

void setup() {
  pixels.begin();
  Serial.begin(9600);
}

void loop() {
  	int val=analogRead(A1);
  	Serial.println(map(val,0,1023,1,10));
  	show(map(val,0,1023,1,10));
    //del