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