第二版ESP32+PN532(RFID)组合板实物图： 上一节中第一版存在无法读取NFC设备信息的问题，打开PN532的读写软件，如下图所示，检查发现是元器件布局连接，IPEX天线座的连接以及铺铜存在问题。 将组合板的拨码开关关闭，实际上就是将PN532与ESP32断开，将USB转TTL连接 ...

[Nairod785] wanted to build a lock box that would lock from the inside. He started with an inexpensive, plain wooden box. This kept the cost down but would also allow him to easily decorate the box ...