基于自由摆的平板控制系统：系统采用ATmega16实验开发板为核心控制器，完成了基于自由摆的平板控制系统的各项功能要求。实现了最基本控制平板随着摆杆的摆动而旋转、硬币在平板上不滑落、激光笔在随着摆杆的摆动保持照射靶纸中心线的功能。用灵敏的RV24YN 20S碳膜电位器完成摆杆角度测量，精确的A/D 转换芯片TLC2543作为模数转换器。用小型步进电机驱动平板转动，根据电位器测得的摆杆转动的角度控制平板平稳、准确地转动，达到预期目的。-Based on freedom pendulum the tablet control system: the system uses the ATmega16 the experimental development board as the core controller to complete the requirements of the various functions of the system based on the the free pendulum tablet control. To achieve the most basic control functionality of the tablet with the pendulum swing and rotation, the coin does not fall on the plate, laser pointer in the irradiated target sheet with the pendulum swing to keep centerline. With the sensitive carbon film potentiometer RV24YN 20S pendulum angle measurement precision A/D conversion chip TLC2543 as analog-to-digital converter. The small stepper motor drive plate is rotated according to the angle of rotation of the pendulum potentiometer measured control tablet smoothly and accurately rotated to achieve the intended purpose.