C语言写的一个DS1302实时时钟程序，这个很多时候应用在视频叠加系统。-C language written by a real-time clock procedures DS1302, often used in video overlay system.

航模航拍视频OSD叠加的全部制作资料，航拍爱好者可以自己动手制作。-All production data model aircraft aerial video OSD overlay, aerial enthusiasts can do it yourself.

高速球型摄像机:高速球采用“精密微分步进电机”实现高速球的快速、准确的定位、旋转；将摄像机叠加了OSD菜单的图像传输出来。通信系统连接上位机和MCU，实现操作者对云台和摄像机的控制。-High speed ball type video camera: high speed ball using precision differential stepper motor to achieve high-speed ball fast, accurate positioning, rotatio