.. toctree::
   :maxdepth: 3
   :caption: ESP32扩展板

   KE0153 Keyes ESP32-IO扩展板.md
   KE0162 Keyes ESP32 Core Board.md
   KE0168 Keyes USB转ESP-01S WIFI模块串口测试扩展板.md
   KE0173 Keyes ESP8266 WiFi 开发板.md