当激光琴弦被阻挡时，光敏电阻将检测到并反馈至单片机，单片机通过检测对应的拐角，利用蜂鸣器发出相应的音符。(When the laser string is blocked, the photosensitive resistor will be detected and fed back to the microcontroller, the microcontroller through the detection of the co

可通过触碰激光束发出音阶，内置两手歌曲。(The scale can be made by touching the laser beam, and the two hand songs are built in.)