4档拨动开关购买：https://mobile.yangkeduo.com/goods.html?goods_id=394985245578&page_from=101&pxq_secret_key=XQWBRHN5GIYUVIUCGV5HMYWINWXHZIVXCUYWHBDCFTNFZREMRE4Q&share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_id=16444812503f4dc5a262f8507fa14973&refer_share_uid=4308692414161&refer_share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_channel=copy_link&refer_share_form=text

NFC芯片与LED灯

NFC芯片采用COB-213，LED选用0603封装正白光，电阻100欧0603封装（也可删去电阻和灯光电路）

NFC芯片购买：https://mobile.yangkeduo.com/goods2.html?goods_id=336605510723&page_from=101&pxq_secret_key=XQWBRHN5GIYUVIUCGV5HMYWINWF5XTQQLG6ZZ3NBCITMOX6DSLVA&share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_id=28830e90ddf14f67a4120abffb40e7ea&refer_share_uid=4308692414161&refer_share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_channel=copy_link&refer_share_form=text

LED购买：https://mobile.yangkeduo.com/goods2.html?goods_id=155057386937&page_from=101&pxq_secret_key=XQWBRHN5GIYUVIUCGV5HMYWINXWBR4ZNNT6Z33UCKOPSBVHWJPSA&share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_id=e43f0177f2ff4e50964a8198d5e3cd60&refer_share_uid=4308692414161&refer_share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_channel=copy_link&refer_share_form=text

电阻购买：https://mobile.yangkeduo.com/goods.html?goods_id=371521034991&page_from=101&pxq_secret_key=XQWBRHN5GIYUVIUCGV5HMYWINUVQ3UROB4UF632JFDS6QW3YJP3A&share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_id=a6da8f9561ca431d977d91178449b7ef&refer_share_uid=4308692414161&refer_share_uin=OPKJDHBQVSHPCEFN6WTTZSAEVE_GEXDA&refer_share_channel=copy_link&refer_share_form=text

打样

彩色丝印(底板选白色），厚度1.6mm，记得用优惠券！

外观

正面外观：

参考资料

1、通行认证改造饭卡

2、开源文档书写https://oshwhub.com/mazhiliang/nfc_card_4in1

3、焊盘参考https://oshwhub.com/kctp/fanka

4、有空关注一下我的B站：倾城早安的个人空间_哔哩哔哩_bilibili