diff --git a/docs/en/atom/atom_motion.md b/docs/en/atom/atom_motion.md
index b846211e..17b14a76 100644
--- a/docs/en/atom/atom_motion.md
+++ b/docs/en/atom/atom_motion.md
@@ -115,7 +115,7 @@
| Function | Reg Address | Data Range | R/W |
| Servo(1~4) | 0x00~0x03 | angle: 0-180 | R/W |
- | Servo(1~4) | 0x10~0x17 | pulse: 500-2500 | R/W |
+ | Servo(1~4) | 0x10、0x12、0x14、0x16 | pulse: 500-2500 | R/W |
| Motor(1~2) | 0x20~0x21 | speed: -127-127 | R/W |
diff --git a/docs/en/base/m5go_bottom2.md b/docs/en/base/m5go_bottom2.md
index d67b871f..08176673 100644
--- a/docs/en/base/m5go_bottom2.md
+++ b/docs/en/base/m5go_bottom2.md
@@ -6,7 +6,7 @@
## Description
-**M5GO BOTTOM2** is an expansion base designed for M5Core2. It integrates an MPU6886 6 axis gyro/accelerometer,digital mic(SPM1423) and 500mAh LiPo battery. The base also includes 2 HY2.0-4P expanion ports capable of ADC/DAC/UART protocols and data input/output,which allows the use of units from the M5Stack range. On either side of the base beneath a diffuser are a total of 10 programmable RGB LEDs(SK6812),which can be used as a form of notification or for impressive lighting effectss. Beneath the device are a set of pogo pins which attach to the included base for charging,The charging base incorporates a TP4057 charging IC which facilitates efficient and safe charging. The pogo pin connector can also be used for I2C communication, therefore if the user wants to attach or modify the base to include I2C devices they are able to do so. On the bottom of the device are an array of Lego™ compatible holes which makes integration of your Lego™ projects a breeze.
+**M5GO BOTTOM2** is an expansion base designed for M5Core2. It integrates an MPU6886 6 axis gyro/accelerometer,digital mic(SPM1423) and 500mAh LiPo battery. The base also includes 2 HY2.0-4P expanion ports capable of ADC/DAC/UART protocols and data input/output,which allows the use of units from the M5Stack range. On either side of the base beneath a diffuser are a total of 10 programmable RGB LEDs(SK6812),which can be used as a form of notification or for impressive lighting effectss. Beneath the device are a set of pogo pins which can attach to a charging base (excluded) for charging. The pogo pin connector can also be used for I2C communication, therefore if the user wants to attach or modify the base to include I2C devices they are able to do so. On the bottom of the device are an array of Lego™ compatible holes which makes integration of your Lego™ projects a breeze.
## Features
diff --git a/docs/zh_CN/atom/atom_motion.md b/docs/zh_CN/atom/atom_motion.md
index be2f04c3..3c5cd1cc 100644
--- a/docs/zh_CN/atom/atom_motion.md
+++ b/docs/zh_CN/atom/atom_motion.md
@@ -118,7 +118,7 @@
| Function | Reg Address | Data Range | R/W |
| Servo(1~4) | 0x00~0x03 | angle: 0-180 | R/W |
- | Servo(1~4) | 0x10~0x17 | pulse: 500-2500 | R/W |
+ | Servo(1~4) | 0x10、0x12、0x14、0x16 | pulse: 500-2500 | R/W |
| Motor(1~2) | 0x20~0x21 | speed: -127-127 | R/W |
diff --git a/docs/zh_CN/module/grbl13.2.md b/docs/zh_CN/module/grbl13.2.md
new file mode 100644
index 00000000..728ee87c
--- /dev/null
+++ b/docs/zh_CN/module/grbl13.2.md
@@ -0,0 +1,119 @@
+# GRBL 13.2
+
+SKU:M035
+
+
+
+## 描述
+
+**GRBL 13.2** 是M5Stack堆叠模块系列中的一款三轴步进电机驱动模块,
+
+采用MEGA238PI2C搭配3*DRV8825步进电机驱动芯片控制方案,能够同时驱动三台双极步进电机联动。
+
+提供I2C通信接口(addr:0x70)并集成拨码开关用于调节电机步进细分(最大支持1/32步进细分)与I2C地址调节,这意味着你可以通过堆叠两块**GRBL 13.2**模块实现六轴控制
+
+9-24V/DC电源输入接口,电机驱动电流可达2.5A,
+
+开放三组限位开关信号接口,能够用于外接限位开关实现电机制动功能
+
+## 产品特性
+
+- 三轴DRV8825步进电机驱动器
+- 驱动电流可达2.5A
+- 驱动双极步进电机
+- 最大1/32模式STEP细分
+
+## 包含
+
+- GRBL 13.2 Module
+
+## 应用
+
+- 打印机
+- 扫描仪
+- 办公自动化机器
+- 游戏机
+- 工厂自动化
+- 机器人技术
+
+
+## 规格参数
+
+
+
+ | 规格 |
+ 参数 |
+
+
+ | 净重 |
+ 22.5g |
+
+
+ | 毛重 |
+ 49g |
+
+
+ | 产品尺寸 |
+ 54.2*54.2*13.2mm |
+
+
+ | 包装尺寸 |
+ 93*64*20mm |
+
+
+
+
+## 相关链接
+
+- [DRV8825 Datasheet](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/module/DRV8825_en.pdf)
+
+
+## 管脚映射
+
+
+ | M5Stack | GPIO21 | GPIO22 | 5V | GND |
+ | GRBL 13.2 | SDA | SCL | VCC | GND |
+
+
+
+## 原理图
+
+
+
+
+## 步进细分调节
+
+
+ | MODE2 | MODE1 | MODE0 | STEP MODE |
+ | 0 | 0 | 0 | Full step (2-phase excitation) with 71% current |
+ | 0 | 0 | 1 | 1/2 step (1-2 phase excitation) |
+ | 0 | 1 | 0 | 1/4 step (W1-2 phase excitation) |
+ | 0 | 1 | 1 | 1/8 step |
+ | 1 | 0 | 0 | 1/16 step |
+ | 1 | 0 | 1 | 1/32 step |
+ | 1 | 1 | 0 | 1/32 step |
+ | 1 | 1 | 1 | 1/32 step |
+
+
+## I2C地址调节
+
+
+ | switch | Address |
+ >| 0 | 0x70 |
+ | 1 | 0x71 |
+
+
+## 案例程序
+
+- [Arduino Example Code](https://github.com/m5stack/M5Atom/tree/master/examples/ATOM_BASE/ATOM_Motion)
+
+- [Firmware源码]()
+
+
diff --git a/docs/zh_CN/uiflow/hardware.md b/docs/zh_CN/uiflow/hardware.md
index f1e25c83..e0159433 100644
--- a/docs/zh_CN/uiflow/hardware.md
+++ b/docs/zh_CN/uiflow/hardware.md
@@ -151,7 +151,7 @@
返回电池电压
* __Get battery current__
-返回电池电压
+返回电池电流
* __Get Vin voltage__
返回Vin输入电压