说明：  动手组装学习板，既省钱又实用。欣欣工作室为您准备了齐全的PCB及制作、调试、实验文档,来欣欣论坛，为了让大家阅读方便，我制成了电子书格式
(Learn hands-assembled panels, both to save money and practical. Xinxin studio prepared for you a full range of PCB and production, testing, laboratory documents, to Xinxin forum in order to allow ease of reading everyone, I made the e-book format)