Update README.md

jumbokh · web-flow · commit 9d1aab350351 · 2022-09-24T10:54:01.000+08:00
diff --git a/README.md b/README.md
@@ -1,5 +1,6 @@
 ### ESP32 實作研習
 ### Arduino IDE: ESP32安裝 https://dl.espressif.com/dl/package_esp32_index.json
+### [CH34SER Driver](https://www.wch.cn/downloads/CH341SER_EXE.html)
 ### ![ESP32](https://github.com/jumbokh/esp32-class/blob/master/images/ESP32s-pinout.png)
 ##
 ### ESP32CAM
