用STM32F407编程完成纸张计数的功能(Using STM32F407 Programming to Complete the Function of Paper Counting)

纸张计数，看采集数据精确程度，基本40张没问题，每个人有不同的方案，仅供参考(Paper counting, to see the accuracy of data collection, basically 40 pieces of no problem, each person has a different plan, for reference only.)