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diff --git a/docs/assets/img/product_pics/unit/unit_example/CATEAR/example_unit_catear_01.png b/docs/assets/img/product_pics/unit/unit_example/CATEAR/example_unit_catear_01.png
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diff --git a/docs/en/unit/butterfly.md b/docs/en/unit/butterfly.md
new file mode 100644
index 00000000..92fdd1b8
--- /dev/null
+++ b/docs/en/unit/butterfly.md
@@ -0,0 +1,27 @@
+# BUTTERFLY
+
+
+
+***
+
+:memo:**[Description](#Description)** :bulb:**[Assembly](#Assembly)** 🛒**[购买链接](https://www.aliexpress.com/store/product/M5Stack-Official-Rubber-Band-Powered-Butterfly-Launcher-with-SERVO-control-and-GROVE-Cable-Adapter-Children-s/3226069_32956965036.html?spm=2114.12010615.8148356.2.486b2682Z5xogF)**
+
+## Description
+
+**BUTTERFLY** is a butterfly model driven by Servo Motor. When servo turn to **0 degree**, "butterfly" will be locked; When servo turns to **90 degree**, "butterfly" will be released and fly out.
+
+
+
+## Assembly
+
+Before "butterfly" fly out, we need assemble it. First, burn this [example](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/BUTTERFLY/UIFlow) into Core, then connect Core with Launcher through GROVE cable and Grove2Pin convertor so that you can control the Lanuncher(Servo Motor) through the Core.
+
+
+
+
+
+Assemble "butterfly", control the Servo Motor to **90 degree**, then bind "butterfly" to the Lanuncher, and control the Servo Motor to **0 degree** for locking "butterfly".
+
+
+
+
\ No newline at end of file
diff --git a/docs/en/unit/catear.md b/docs/en/unit/catear.md
new file mode 100644
index 00000000..aaa7ad51
--- /dev/null
+++ b/docs/en/unit/catear.md
@@ -0,0 +1,59 @@
+# CATEAR
+
+

+
+***
+
+:memo:**[Description](#Description)** :octocat:**[Example](#Example)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-Cute-Cat-Ears-Acrylic-Handbands-with-118Pcs-NeoPixel-LED-Lights-Control-by-UI-Flow/3226069_32956969127.html?spm=2114.12010615.8148356.2.7e9f55cfahQyM2)**
+
+## Description
+
+**CATEAR** is a cat ear shaped Neopixel bar built in 118 RGB LEDs. It can be connected to GROVE A, B or C on M5Core.
+
+## Feature
+
+- The number of RGB: 118
+- GROVE interface, support [UIFlow](http://flow.m5stack.com) and [Arduino](http://www.arduino.cc)
+
+## Related Link
+
+- **[Offical Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**
+
+- **[Forum](http://forum.m5stack.com/)**
+
+- **[FastLED Library](https://github.com/FastLED/FastLED/wiki/Overview)**
+
+- **[FastLED Reference(Chinese version)](http://www.taichi-maker.com/homepage/reference-index/arduino-library-index/fastled-library/)**
+
+## Example
+
+
+
+### UIFlow
+
+*If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/CATEAR/UIFlow).*
+
+
+
+### PinMap
+
+**If CATEAR was connected to GROVE A**
+
+
+ | M5Core(GROVE A) | GPIO22 | GPIO21 | 5V | GND |
+ | CATEAR Unit | | CATEAR Pin | 5V | GND |
+
+
+**If CATEAR was connected to GROVE B**
+
+
+| M5Core(GROVE B) | GPIO36 | GPIO26 | 5V | GND |
+ | CATEAR Unit | | CATEAR Pin | 5V | GND |
+
+
+**If CATEAR was connected to GROVE C**
+
+
+| M5Core(GROVE C) | GPIO16 | GPIO17 | 5V | GND |
+ | CATEAR Unit | | CATEAR Pin | 5V | GND |
+
diff --git a/docs/index.md b/docs/index.md
index 3f8a619a..ceadff0a 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -117,7 +117,6 @@
[](en/unit/adc) [](en/unit/dac) [](en/unit/makey) [](en/unit/rgb)
-
[](en/unit/relay) [](en/unit/hub) [](en/unit/396port) [](en/unit/proto)
@@ -130,7 +129,11 @@
**Visual class**
-[](en/unit/neopixel) [](en/unit/hex) [](en/unit/neoflash)
+[](en/unit/neopixel) [](en/unit/catear) [](en/unit/hex) [](en/unit/neoflash)
+
+
+
+[](en/unit/butterfly)
diff --git a/docs/zh_CN/README.md b/docs/zh_CN/README.md
index 19f29d2d..522a94eb 100644
--- a/docs/zh_CN/README.md
+++ b/docs/zh_CN/README.md
@@ -23,7 +23,7 @@
**套件**
-[](zh_CN/core/m5go_iot_starter_kit) [](zh_CN/core/face_kit)
+[](zh_CN/core/m5go_iot_starter_kit) [](zh_CN/core/m5go_lite) [](zh_CN/core/face_kit)
@@ -112,7 +112,9 @@
**视觉类Unit**
-[](zh_CN/unit/neopixel) [](zh_CN/unit/hex) [](zh_CN/unit/neoflash)
+[](zh_CN/unit/neopixel) [](zh_CN/unit/catear) [](zh_CN/unit/hex) [](zh_CN/unit/neoflash)
+
+[](zh_CN/unit/butterfly)
diff --git a/docs/zh_CN/unit/butterfly.md b/docs/zh_CN/unit/butterfly.md
new file mode 100644
index 00000000..bbf8a499
--- /dev/null
+++ b/docs/zh_CN/unit/butterfly.md
@@ -0,0 +1,27 @@
+# BUTTERFLY
+
+
+
+***
+
+:memo:**[描述](#描述)** :bulb:**[装配](#装配)** 🛒**[购买链接](https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-1172588106.10.63fb425eBx48kT&id=583025433070)**
+
+## 描述
+
+**BUTTERFLY** 是一个由舵机驱动的蝴蝶模型。当控制舵机是 **0 度**时,舵机发射装置上锁;当控制舵机 **90 度**时,发射装置解锁,释放“蝴蝶”。
+
+
+
+## 装配
+
+使用前,烧录 BUTTERFLY 的 UIFlow [例程](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/BUTTERFLY/UIFlow) 到 Core,然后通过 GROVE 线和 Grove2Pin转接板,将 Core 和 发射装置连接在一起,使得能够用 Core 上的按键控制舵机转动。
+
+
+
+
+
+装配“蝴蝶”,控制舵机 **90 度**,将“蝴蝶”通过皮筋绑定发射装置上,并控制舵机为 **0 度**,上锁。
+
+
+
+
\ No newline at end of file
diff --git a/docs/zh_CN/unit/catear.md b/docs/zh_CN/unit/catear.md
index 2913bb45..b52c9db0 100644
--- a/docs/zh_CN/unit/catear.md
+++ b/docs/zh_CN/unit/catear.md
@@ -1,13 +1,59 @@
-# CATEAR
+# CATEAR - 猫耳朵
-

+

***
-:memo:**[描述](#描述)** :electric_plug:**[原理图](#原理图)** 🛒**[购买链接](https://pt.aliexpress.com/store/product/M5Stack-Official-Cute-Cat-Ears-Acrylic-Handbands-with-118Pcs-NeoPixel-LED-Lights-Control-by-UI-Flow/3226069_32956969127.html?spm=a2g03.12010615.8148356.2.1f4631c86nrIn6)**
-
-
+:memo:**[描述](#描述)** :octocat:**[例程](#例程)** 🛒**[购买链接](https://www.aliexpress.com/store/product/M5Stack-Official-Cute-Cat-Ears-Acrylic-Handbands-with-118Pcs-NeoPixel-LED-Lights-Control-by-UI-Flow/3226069_32956969127.html?spm=2114.12010615.8148356.2.7e9f55cfahQyM2)**
## 描述
-**CATEAR**
\ No newline at end of file
+**CATEAR** 是猫耳朵形状的 Neopixel 灯条。CATEAR 总共有 118 颗 RGB LED。它可以接 M5Core 的 GROVE A, B, C 接口。
+
+## 特性
+
+- RGB LED灯数: 118
+- GROVE接口,支持 [UiFlow](http://flow.m5stack.com) 编程,[Arduino](http://www.arduino.cc) 编程
+
+## 相关链接
+
+- **[官方频道视频](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
+
+- **[官方论坛](http://forum.m5stack.com/)**
+
+- **[FastLED库说明](https://github.com/FastLED/FastLED/wiki/Overview)**
+
+- **[FastLED参考(中文)](http://www.taichi-maker.com/homepage/reference-index/arduino-library-index/fastled-library/)**
+
+## 例程
+
+
+
+### UIFlow
+
+*具体例程请点击[这里](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/CATEAR/UIFlow).*
+
+
+
+### 管脚映射
+
+**如果CATEAR接GROVE A**
+
+
+ | M5Core(GROVE接口A) | GPIO22 | GPIO21 | 5V | GND |
+ | CATEAR Unit | | CATEAR 引脚 | 5V | GND |
+
+
+**如果CATEAR接GROVE B**
+
+
+| M5Core(GROVE接口B) | GPIO36 | GPIO26 | 5V | GND |
+ | CATEAR Unit | | CATEAR 引脚 | 5V | GND |
+
+
+**如果CATEAR接GROVE C**
+
+
+| M5Core(GROVE接口C) | GPIO16 | GPIO17 | 5V | GND |
+ | CATEAR Unit | | CATEAR 引脚 | 5V | GND |
+
\ No newline at end of file
diff --git a/docs/zh_CN/unit/hex.md b/docs/zh_CN/unit/hex.md
index 13fafd20..e0646473 100644
--- a/docs/zh_CN/unit/hex.md
+++ b/docs/zh_CN/unit/hex.md
@@ -77,7 +77,7 @@ void loop(){
-### UIFlow
+### 2. UIFlow
*具体例程请点击[这里](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/HEX/UIFlow).*