+
+ PROTO-KIT
+
+
+***
+
+:memo:**[Description](#Description)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-NEW-Plastic-Corner-Connector-for-1515-Aluminum-Profile-10pcs-a-set-M4-Screws-Included-M5Stack/3226069_32949757787.html?spm=2114.12010615.8148356.3.6fac6a2dtbyJQI)**
+
+## Description
+
+This **1515 Corner** is a type of connector for 1515 Aluminum Extrusion. It could help you fast-prototype a 1515 frame. The package comes with 90-degree corner connectors and screws, you can connect up to 3 Aluminum Extrusions on 3 dimensions and fixed them up with the screws.
+
+
+
+## Product Features
+- 90-degree 3-dimension connector.
+- 1515 Aluminum Profile compatible
+
+## Package Includes
+- 10x set
+- Each set:
+ - 1x connector
+ - 3x M4 screws
+ - 1x cap
diff --git a/docs/en/1515/nut.md b/docs/en/1515/nut.md
new file mode 100644
index 00000000..76ac580b
--- /dev/null
+++ b/docs/en/1515/nut.md
@@ -0,0 +1,19 @@
+# Accessory NUT {docsify-ignore-all}
+
+
+
+***
+
+:memo:**[Description](#Description)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Slide-Nut-for-1515-Aluminum-Profile-10pcs-a-Set-Compatible-with-M3-Screws-M5-PCD/3226069_32950444304.html?spm=2114.12010615.8148356.1.6fac6a2drUlAWY)**
+
+## Description
+
+**1515 NUT**, like its namesake, is slide component belongs to 1515 Aluminum Extrusion series. It is also known as Drop in Nut. It's for Drop in 1515 aluminum profile to set carriage or to connect.
+
+
+## Product Features
+- 1515 Aluminum Profile compatible
+- Drop in Nut
+
+## Package Includes
+- 10x pcs
\ No newline at end of file
diff --git a/docs/en/accessory/bus_socket.md b/docs/en/accessory/bus_socket.md
new file mode 100644
index 00000000..cd79f600
--- /dev/null
+++ b/docs/en/accessory/bus_socket.md
@@ -0,0 +1,20 @@
+# Accessory BUS-Socket {docsify-ignore-all}
+
+
+
+***
+
+:memo:**[Description](#Description)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-Stock-Offer-2x15-Pin-Headers-Socket-2-54mm-Male-Female-4-Pair-Connector-for/3226069_32840923472.html?spm=2114.12010615.8148356.71.6156228amNLalH)**
+
+## Description
+
+**BUS-Socket** is a pair of M-BUS socket, female and male. 2X15 pins. They share the same specification with the BUS socket on M5Cores. The male piece is 90-degree bend to the side.
+
+
+## Product Features
+- 90-degree bend pin
+- 2x15 @ 2.54mm
+
+## Package Includes
+- 1x male socket
+- 1x female socket
\ No newline at end of file
diff --git a/docs/en/accessory/converter/grove2grove.md b/docs/en/accessory/converter/grove2grove.md
new file mode 100644
index 00000000..c4421165
--- /dev/null
+++ b/docs/en/accessory/converter/grove2grove.md
@@ -0,0 +1,19 @@
+# Accessory GROVE2GROVE {docsify-ignore-all}
+
+
+
+***
+
+:memo:**[Description](#Description)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-Connector-Grove2Grove-Grove2Pin-Grove2SERVO-5pcs-a-set-Three-kinds-Optional-Grove-to-GROVE-PIN/3226069_32960512299.html?spm=2114.12010615.8148356.9.412b4a65AcFo9l)**
+
+## Description
+
+**GROVE2GROVE** is a GROVE extension connector. Two female GROVE port sit back-to-back. One common use of this part is for the Neopixel strip extension.
+
+
+
+## Product Features
+- Grove connector
+
+## Package Includes
+- 5x pcs
diff --git a/docs/en/module/proto_kit.md b/docs/en/module/proto_kit.md
new file mode 100644
index 00000000..6917948c
--- /dev/null
+++ b/docs/en/module/proto_kit.md
@@ -0,0 +1,51 @@
+# Module PROTO-Kit {docsify-ignore-all}
+
+
+
+***
+
+:memo:**[Description](#Description)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-Experimental-Proto-Board-Set-included-DHT12-Bus-Socke-Grove-Cable-for-ESP32-Basic-Kit/3226069_32841004439.html?spm=2114.12010615.8148356.13.3f172fb10t1sUb)**
+
+
+## Description
+
+In comparision,**PROTO function Module** includes more stuff than PROTO Board.Other than the PROTO board, it also comes with a DHT12(temperature and humility sensor), M-BUS Socket and more. PROTO Board is a pure universal prototype perboard. You can have the total freedom to make your own project as you want it, with prototyping perboards that allows laying out customized circult to interact with the M5 core via M-BUS.
+
+## Product Features
+
+- Hole Size: 0.039" 1mm (CNC Drilled)
+- Hole Pitch: 0.1 in - (2.54 mm)
+- Entire Hole Quantity: 260 Holes
+- DHT12
+- GROVE cable
+- M-BUS socket
+
+## M-BUS Interface
+
+| LINE0 | LINE1 |
+|:---:|:---:|
+| GND | IO35(ADC1) |
+| GND | IO36(ADC2) |
+| GND | EN |
+| IO23(MOSI) | IO25(DAC0) |
+| IO19(MISO) | IO26(DAC1) |
+| IO18(EXT\_SCK) | 3V3 |
+| IO3(U1\_RX) | IO1(U1\_TX) |
+| IO16(U1\_RX) | IO17(U2\_TX) |
+| IO21(I2C\_SDA) | IO22(I2C\_SCL) |
+| IO2 | IO5 |
+| IO12(I2S\_SCLK) | IO13 |
+| IO15(I2S\_OUT) | IO0 |
+| HPOWR | IO34 |
+| HPOWR | 5V |
+| HPOWR | BAT |
+
+## Include
+
+- 1x M5Stack PROTO Module
+
+## Related Link
+
+- **[Offical Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**
+
+- **[Forum](http://forum.m5stack.com/)**
diff --git a/docs/en/tool/usb_downloader.md b/docs/en/tool/usb_downloader.md
index c07a84d5..4d864c53 100644
--- a/docs/en/tool/usb_downloader.md
+++ b/docs/en/tool/usb_downloader.md
@@ -1,4 +1,4 @@
-# # Accessory ESP32-Downloader {docsify-ignore-all}
+## Accessory ESP32-Downloader {docsify-ignore-all}
@@ -8,7 +8,8 @@
## Description
-A tool built-in USB-to-UART bridge chip(CP2104) can be connected with UART port for automatically burning firmware.
+USB downloader is a USB-to-UART converter. It can be used to download firmware form PC to Microprocessor devices.
+
TXD led, RXD led, Power led and 6pin @ 2.54mm bus sockets.
@@ -31,6 +32,9 @@ TXD led, RXD led, Power led and 6pin @ 2.54mm bus sockets.
+## product Feature
+- USB typeC-to-Uart
+
## Include
- 1x M5Stack USB Downloader
diff --git a/docs/en/tool/usb_isp.md b/docs/en/tool/usb_isp.md
index 14843bf3..adc17476 100644
--- a/docs/en/tool/usb_isp.md
+++ b/docs/en/tool/usb_isp.md
@@ -1 +1,36 @@
-https://www.aliexpress.com/store/product/M5Stack-Official-ISP-USBasp-Programmer-for-51-ATMEL-AVR-Download-support-Win7-64-Random-Color/3226069_32969199531.html?spm=a2g1y.12024536.productList_5885013.subject_2 {docsify-ignore-all}
+## Accessory USB-ISP {docsify-ignore-all}
+
+
+
+***
+
+:memo:**[Description](#Description)** :electric_plug:**[Schematic](#Schematic)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-ISP-USBasp-Programmer-for-51-ATMEL-AVR-Download-support-Win7-64-Random-Color/3226069_32969199531.html?spm=2114.12010615.8148356.5.20fe3ae4UnxHv5)**
+
+## Description
+
+USB-ISP is an AVR Programmer, 3.3V/5V power supply, supports ISP programming for AVR and 51 microcontrollers.
+
+
+## PARAMETER
+
+*There are two reserved pins(RTS, DTR) on M5Stack USB Downloader for other applications.*
+
+| PinNumber | PinName |
+| :-------: |:----------: |
+| 1 2 | MOSI VCC |
+| 3 4 | NC GND |
+| 5 6 | RST GND |
+| 7 8 | sck GND |
+| 9 10 | MISO GND |
+
+
+
+
+## Product Feature
+- supports win7 64
+- free driver
+## Package includes
+- 1x USB-ISP
+- 1x Cable
+
+
diff --git a/docs/en/unit/pahub.md b/docs/en/unit/pahub.md
index 881f5a13..dbfdfc5e 100644
--- a/docs/en/unit/pahub.md
+++ b/docs/en/unit/pahub.md
@@ -17,7 +17,7 @@ programmable control register.
Technically this Unit allows mutiple levels of nesting, for example you can wire PaHUBs to the root PaHUB to get more seats for your I2C slave devices, if you have 7 of them you can have up to 36 I2C GROVE ports, which makes it easier to get your project more organized.
-The I2C address of this unit is 0x77 (changable by resistors).
+The I2C address of this unit is 0x70 (changable by resistors).
*Notice: Please pay attention to the channel order while programing*
@@ -30,12 +30,19 @@ The I2C address of this unit is 0x77 (changable by resistors).
- I2C GROVE PORTA Expander
- Two Lego-compatible holes
- Nested allowed
-- 1-To-6
+- 1-to-6
## Schematic
+## Learn
+- The connections of the I2C data path are controlled by the same I2C master device that is switched tocommunicate with multiple I2C slaves. After the successful acknowledgment of the slave address (hardwareselectable by A0, A1, and A2 pins), a single 8-bit control register is written to or read from to determine the selected channels.
+
+- Functional Block Diagram
+
+
+
## Kit includes
- 1x PaHUB Unit
@@ -49,7 +56,7 @@ The I2C address of this unit is 0x77 (changable by resistors).
## Code
- protovol type - I2C
-- address - 0x77
+- address - 0x70
## Related Link
diff --git a/docs/index.md b/docs/index.md
index e85c6e0e..7fb29c8e 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -140,6 +140,7 @@
## BATTERY
## PROTO
+## PROTO-KIT
## PLUS
## USB
## BUS
@@ -161,6 +162,13 @@
PROTO
+
+
+ PROTO-KIT
+JOYSTICK
-*** # BASE @@ -656,15 +664,7 @@BUTTERFLY
-
-
-
-
+
+ GROVE2GROVE
+
+
+ BUS-Socket
+
+ Aluminium-Profile
+
+
+ CORNER
+
+
+ NUT
+
+ Tools
+
+
+ USB-ISP
+
@@ -216,6 +224,7 @@
@@ -742,6 +751,52 @@
@@ -749,5 +804,12 @@