用于演示Android上的蓝牙功能，但是只能主动连接其他蓝牙设备，无法被连接，程序使用模拟串口可以接收其他带有蓝牙设备发送的数据。-Used to demonstrate the Bluetooth feature on Android, but only active connection to other Bluetooth devices can not be connected to the serial port using an analog program with other B

通过手机蓝牙串口功能，模拟遥控方向键控制遥控车(Control the remote control car by using the function of the mobile phone's Bluetooth serial port and simulating the remote control direction key)