通过手机蓝牙串口，根据手机蓝牙界面给蓝牙模块发送指令，单片机解析指令，调节pwm输出，来调节灯光的亮度，模式切换。-Bluetooth serial port via the phone, the Bluetooth mobile phone interface to the Bluetooth module to send commands microcontroller parsing instructions regulating pwm output to adjust the brig