Arduino 节奏灯： 1、麦克风 2、WS2812B 全彩LED 麦克风获取音频，WS2812B 根据声音的频率高低发出不同的亮度。类似酒吧的音乐节奏灯效果(Arduino rhythm light: 1.Microphone 2.WS2812B full color LED The microphone gets audio, and the WS2812B emits different brightness according to the frequency of the sound