https://item.taobao.com/item.htm?spm=a1z09.2.0.0.61472e8dwxidF3&id=520106880267&_u=41qf7bf521a9
资料
http://wiki.tjc1688.com/doku.php?id=3.usarthmi%E5%85%A5%E9%97%A8:1.%E5%88%B0%E6%89%8B%E6%B5%8B%E8%AF%95
按键点击,修改而二维码内容自动修改
和单片机通信
http://wiki.tjc1688.com/doku.php?id=5.%E6%8E%A7%E4%BB%B6%E8%AF%A6%E8%A7%A3:1.%E8%AE%A4%E8%AF%86%E6%8E%A7%E4%BB%B6