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README.md

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+# zigbee2mqtt hardware module
+
+This is hardware module for [iobroker.zigbee](https://github.com/ioBroker/ioBroker.zigbee) and [zigbee2mqtt](https://github.com/Koenkk/zigbee2mqtt)
+If you can speek Chinese and be intreasted with this project, please look at this [post](https://bbs.iobroker.cn/thread-361-1-1.html) in [ioBroker China BBS](https://bbs.iobroker.cn/)
+
+# **THIS IS ALPHA VERSION!!!**
+
+# What's the difference
+
+- Use [E18-MS1PA1-IPX](http://www.ebyte.com/en/product-view-news.aspx?id=123) zigbee module. 20dBm power can make sure zigbee net work signal is strong.
+- Add an ESP8266 module. Give you another option that can connect zigbee module though wifi-to-serial (I was using this [project](https://github.com/smarthomefans/ESP32-Serial-Bridge)). 
+If your machine running smarthome platform, such as ioBroker or homeassistant, is put in a hidden corner, for better signal coverage, you can put your zigbee module in some where else.
+- ESP8266 connected to E18 firmware download pins, give you a chance that can update E18 though ESP8266, no need to use CC-DEBUG.
+- There will be 4 options for different TTY connection:
+  - USB TTY <==> ESP 8266 TTY. This option is used for download firmware for E18.
+  - USB TTY <==> E18 TTY. If you can connect your module though USB wire, this is more stable.
+  - USB TTY <==> ESP 8266 debug port. ESP 8266 TTY <==> E18 TTY. Connect though wifi, and you can capture debug infomation though USB TTY.
+  - ESP 8266 TTY <==> E18 TTY. Connect though TTY.
+
+# PCB preview
+
+[top view]()
+[bottom view]()