Merge branch 'espressif:master' into master

docs/en/get-started/ESP32-S3-EYE_Getting_Started_Guide.md

@@ -1,10 +1,13 @@
-# ESP32-S3-EYE v2.1 <!-- omit in toc -->
+# ESP32-S3-EYE v2.2 <!-- omit in toc -->
+
+[[中文]](../../zh_CN/get-started/ESP32-S3-EYE_Getting_Started_Guide.md)
+
 - [1. Getting Started](#1-getting-started)
   - [1.1. Overview](#11-overview)
   - [1.2. Comparison with ESP-EYE](#12-comparison-with-esp-eye)
   - [1.3. Block Diagram](#13-block-diagram)
-  - [1.4. Components on the ESP32-S3-EYE Main Board](#14-components-on-the-esp32-s3-eye-main-board)
+  - [1.4. Components on the ESP32-S3-EYE-MB Main Board](#14-components-on-the-esp32-s3-eye-mb-main-board)
-  - [1.5. Components on the ESP32-S3-EYE Sub Board](#15-components-on-the-esp32-s3-eye-sub-board)
+  - [1.5. Components on the ESP32-S3-EYE-SUB Sub Board](#15-components-on-the-esp32-s3-eye-sub-sub-board)
   - [1.6. Contents and Packaging](#16-contents-and-packaging)
     - [1.6.1. Retail Orders](#161-retail-orders)
     - [1.6.2. Wholesale Orders](#162-wholesale-orders)
@@ -16,16 +19,21 @@
   - [2.4. Software Setup](#24-software-setup)
 - [3. Hardware Reference](#3-hardware-reference)
   - [3.1. Notes on GPIO Allocations](#31-notes-on-gpio-allocations)
-  - [3.2. Notes on Power Distribution](#32-notes-on-power-distribution)
+  - [3.2. Independent Module and Camera Power Supply](#32-independent-module-and-camera-power-supply)
-    - [3.2.1. Independent Module and Camera Power Supply](#321-independent-module-and-camera-power-supply)
 - [4. Hardware Revision Details](#4-hardware-revision-details)
+  - [4.1. Revision History](#41-revision-history)
+  - [4.2. known Issues](#42-known-issues)
 - [5. Related Documents](#5-related-documents)
   - [5.1. Datasheet](#51-datasheet)
   - [5.2. Schematic](#52-schematic)
   - [5.3. PCB Layout](#53-pcb-layout)
   - [5.4. Dimensions](#54-dimensions)
 
-This user guide will help you get started with ESP32-S3-EYE v2.1 and will also provide more in-depth information.
+This user guide will help you get started with ESP32-S3-EYE v2.2 and will also provide more in-depth information.
+
+> **Notice**
+>
+> If you use ESP32-S3-EYE v2.1, please follow this guide. The differences between v2.2 and v2.1 are described in Section [Hardware Revision Details](#4-hardware-revision-details).
 
 The ESP32-S3-EYE is a small-sized AI development board produced by [Espressif](https://espressif.com). It is based on the [ESP32-S3](https://www.espressif.com/en/products/socs/esp32-s3) SoC and [ESP-WHO](https://github.com/espressif/esp-who), Espressif’s AI development framework. It features a 2-Megapixel camera, an LCD display, and a microphone, which are used for image recognition and audio processing. ESP32-S3-EYE offers plenty of storage, with an 8 MB Octal PSRAM and a 8 MB flash. It also supports image transmission via Wi-Fi and debugging through a Micro-USB port. With ESP-WHO, you can develop a variety of AIoT applications, such as smart doorbell, surveillance systems, facial recognition time clock, etc.
 
@@ -43,13 +51,14 @@ The document consists of the following major sections:
 -   [Getting started](#1-getting-started): Introduction of the board, block diagram, description of key components, contents and packaging, as well as quick guide to use the board.
 -   [Start Application Development](#2-start-application-development): Hardware and software setup instructions to flash firmware onto the board.
 -   [Hardware Reference](#3-hardware-reference): More detailed information about the board's hardware.
+-   [Hardware Revision Details](#4-hardware-revision-details): Hardware revision history, known issues, and links to user guides for previous versions (if any) of the board.
 -   [Related Documents](#5-related-documents): Links to related documentation.
 
 # 1. Getting Started
 
 ## 1.1. Overview
 
-The ESP32-S3-EYE board consists of two parts: the main board (ESP32-S3-EYE_MB) that integrates the ESP32-S3-WROOM-1 module, camera, SD card slot, digital microphone, USB port, and function buttons; and the sub board (ESP32-S3-EYE_SUB) that contains an LCD display. The main board and sub board are connected through pin headers.
+The ESP32-S3-EYE board consists of two parts: the main board (ESP32-S3-EYE-MB) that integrates the ESP32-S3-WROOM-1 module, camera, SD card slot, digital microphone, USB port, and function buttons; and the sub board (ESP32-S3-EYE-SUB) that contains an LCD display. The main board and sub board are connected through pin headers.
 
 ## 1.2. Comparison with ESP-EYE
 
@@ -58,8 +67,8 @@ The ESP32-S3-EYE has some additional functions comparing to [ESP-EYE](https://gi
 | Feature | ESP32-S3-EYE | ESP-EYE | 
 |---------|--------------|-----------|
 | Chip embedded             | ESP32-S3         | ESP32              |
-| Memory                    | 8 MB Octal PSRAM | 8 MB Quad PSRAM    |
+| PSRAM                    | 8 MB Octal PSRAM | 8 MB Quad PSRAM    |
-| Storage                   | 8 MB flash       | 4 MB flash         |
+| Flash                   | 8 MB flash       | 4 MB flash         |
 | LCD display               | Yes              | None               |
 | Accelerometer             | Yes              | None               |
 | Alternative power supply  | External battery (optional) | None               |
@@ -69,7 +78,7 @@ The ESP32-S3-EYE has some additional functions comparing to [ESP-EYE](https://gi
 
 ## 1.3. Block Diagram
 
-The block diagram below presents main components of the ESP32-S3-EYE_MB main board (on the left) and the ESP32-S3-EYE_SUB sub board (on the right), as well as the interconnections between components.
+The block diagram below presents main components of the ESP32-S3-EYE-MB main board (on the left) and the ESP32-S3-EYE-SUB sub board (on the right), as well as the interconnections between components.
 
 <center>
 
@@ -81,48 +90,45 @@ The block diagram below presents main components of the ESP32-S3-EYE_MB main boa
 
 The following sections will describe the key components on the main board and the sub board, respectively.
 
-## 1.4. Components on the ESP32-S3-EYE Main Board
+## 1.4. Components on the ESP32-S3-EYE-MB Main Board
-
 
 <center>
 
-| ![ESP32-S3-EYE_MB - front and back](../../_static/get-started/ESP32-S3-EYE_MB-annotated-photo.png) | 
+| ![ESP32-S3-EYE-MB - front and back](../../_static/get-started/ESP32-S3-EYE_MB-annotated-photo.png) | 
 |:--:| 
-|ESP32-S3-EYE_MB - front and back|
+|ESP32-S3-EYE-MB - front and back|
 
 </center>
 
-
 The key components of the board are described from front view to back view, starting from the camera, in an anti-clockwise direction.
 
 | No. | Key Component            |       Description |
 |-----|----|--|
 | 1   | Camera                   | The camera [OV2640](https://github.com/espressif/esp32-camera) with 2 million pixels has a 66.5° field of view and a maximum resolution of 1600x1200. You can change the resolution when developing applications.|
-| 2   | Module Power LED            | The LED (green) turns on when USB power is connected to the board. If it is not turned on, it indicates either the USB power is not supplied, or the 5 V to 3.3 V LDO is broken. Software can configure GPIO3 to set different LED statuses (turned on/off, flashing) for different statuses of the board. Note that GPIO3 must be set up in open-drain mode. Pull GPIO3 up can break the LED.  |
+| 2   | Module Power LED            | The LED (green) turns on when USB power is connected to the board. If it is not turned on, it indicates either the USB power is not supplied, or the 5 V to 3.3 V LDO is broken. Software can configure GPIO3 to set different LED statuses (turned on/off, flashing) for different statuses of the board. Note that GPIO3 must be set up in open-drain mode. Pulling GPIO3 up may burn the LED.  |
 | 3   | Pin Headers              | Connect the female headers on the sub board.|
 | 4   | 5 V to 3.3 V LDO         | Power regulator that converts a 5 V supply into a 3.3 V output for the module.|
 | 5   | Digital Microphone       | The digital I2S MEMS microphone features 61 dB SNR and –26 dBFS sensitivity, working at 3.3 V.|
 | 6   | FPC Connector            | Connects the main board and the sub board. |
-| 7   | Function Button          | There are six function buttons on the board. Users can configure any functions as needed. |
+| 7   | Function Button          | There are six function buttons on the board. Users can configure any functions as needed except for the RST button. |
 | 8   | ESP32-S3-WROOM-1         | The ESP32-S3-WROOM-1 module embeds the ESP32-S3R8 chip variant that provides Wi-Fi and Bluetooth 5 (LE) connectivity, as well as dedicated vector instructions for accelerating neural network computing and signal processing. On top of the integrated 8 MB Octal SPI PSRAM offered by the SoC, the module also comes with 8 MB flash, allowing for fast data access. ESP32-S3-WROOM-1U module is also supported.|
 | 9   | MicroSD Card Slot        | Used for inserting a MicroSD card to expand memory capacity. |
 | 10  | 3.3 V to 1.5 V LDO       | Power regulator that converts a 3.3 V supply into a 1.5 V output for the camera.|
 | 11  | 3.3 V to 2.8 V LDO       | Power regulator that converts a 3.3 V supply into a 2.8 V output for the camera.|
 | 12  | USB Port           | A Micro-USB port used for 5 V power supply to the board, as well as for communication with the chip via GPIO19 and GPIO20.|
-  13  | Battery Soldering Points | Used for soldering a battery socket to connect an external Li-Ion battery that can serve as an alternative power supply to the board. If you use an external battery, make sure it has built-in protection circuit and fuse. The recommended specifications of the battery: capacity > 1000 mAh, output voltage 3.7 V, input voltage 4.2 V – 5 V.|
+  13  | Battery Soldering Points | Used for soldering a battery socket to connect an external Li-ion battery that can serve as an alternative power supply to the board. If you use an external battery, make sure it has built-in protection circuit and fuse. The recommended specifications of the battery: capacity > 1000 mAh, output voltage 3.7 V, input voltage 4.2 V – 5 V.|
-| 14  | Battery Charger Chip     | 1 A linear Li-Ion battery charger (ME4054BM5G-N) in ThinSOT package. The power source for charging is the **USB Port**.|
+| 14  | Battery Charger Chip     | 1 A linear Li-ion battery charger (ME4054BM5G-N) in ThinSOT package. The power source for charging is the **USB Port**.|
-| 15  | Battery Red LED          | When the USB power is connected to the board and a battery is not connected, the red LED blinks. If a battery is connected, the red LED turns on. When the battery is fully charged, it turns off.  |
+| 15  | Battery Red LED          | When the USB power is connected to the board and a battery is not connected, the red LED blinks. If a battery is connected and being charged, the red LED turns on. When the battery is fully charged, it turns off.  |
-| 16  | Accelerometer            | Three-axis accelerometer (QMA7981) for gesture recognition, screen rotation, etc. |
+| 16  | Accelerometer            | Three-axis accelerometer (QMA7981) for screen rotation, etc. |
 
 
-## 1.5. Components on the ESP32-S3-EYE Sub Board
+## 1.5. Components on the ESP32-S3-EYE-SUB Sub Board
-
 
 <center>
 
-| ![ESP32-S3-EYE_SUB - front and back](../../_static/get-started/ESP32-S3-EYE_SUB-annotated-photo.png) | 
+| ![ESP32-S3-EYE-SUB - front and back](../../_static/get-started/ESP32-S3-EYE_SUB-annotated-photo.png) | 
 |:--:| 
-|ESP32-S3-EYE_SUB - front and back|
+|ESP32-S3-EYE-SUB - front and back|
 
 </center>
 
@@ -143,8 +149,8 @@ The key components of the board are described from front view to back view, star
 
 If you order a few samples, each board comes in an individual box. Each box contains:
 
--   1 x ESP32-S3-EYE_MB main board
+-   1 x ESP32-S3-EYE-MB main board
--   1 x ESP32-S3-EYE_SUB sub board
+-   1 x ESP32-S3-EYE-SUB sub board
 
 The main board and sub board are assembled by default.
 
@@ -158,7 +164,7 @@ For wholesale orders, please go to <https://www.espressif.com/en/contact-us/sale
 
 ## 1.7. Default Firmware and Function Test
 
-Each ESP32-S3-EYE board comes with pre-built [default firmware](https://github.com/espressif/esp-who/tree/master/default_bin) that allows you to test its functions including voice wake-up, command recognition, face detection and recognition.
+Each ESP32-S3-EYE board comes with pre-built [default firmware](https://github.com/espressif/esp-who/tree/master/default_bin/esp32-s3-eye) that allows you to test its functions including voice wake-up, voice command recognition, face detection and recognition.
 
 To test the board's functions, you need the following hardware:
 
@@ -170,8 +176,7 @@ Before powering up your board, please make sure that it is in good condition wit
 1. Connect the board to a power supply through the **USB Port** using a USB cable. While the board is powered up, you will notice the following responses:
 
 * The **Module Power LED** turns on for a few seconds, indicating that the default firmware is being loaded. 
-* Once the firmware is loaded, the **Module Power LED** turns off.
+* The **Module Power LED** turns off, indicating the default firmware has been loaded. The board enters human face recognition mode by default. 
-* The board enters human face recognition mode by default. 
 * The LCD display shows live video streaming.
 
 At this point, the board is ready for further instructions. You can control the board with either function buttons or voice commands. Function button control is described first:
@@ -182,24 +187,25 @@ At this point, the board is ready for further instructions. You can control the
 5. Press **PLAY** to delete the latest face ID. The board displays "XXX ID(S) LEFT".
 
 To control the board with voice commands, follow the instructions below:
+
 1. Complete step 1 described previously and notice responses from the board.
-2. Activate the board with the default Chinese wake word “Hi, 乐鑫” (meaning "Hi, Espressif"). Note that only Chinese wake word is supported in the default firmware. When the wake word is detected, the **Module Power LED** should turn on, indicating that the board is ready for a speech command. 
+2. Activate the board with the default English wake word “Hi ESP”. When the wake word is detected, the **Module Power LED** will turn on, indicating that the board is ready for a speech command.
-3. In the default human face recognition mode, use the following three commands to control the board:
+3. Say an English speech command to control the board. Once a speech command is recognized, the **Module Power LED** will blink. The supported English speech commands in face recognition mode are listed below:
 
-| Default Chinese Speech Commands | Meaning                  | Response |
+| Default English Speech Commands | Response |
-|---------------------------------|--------------------------|----------|
+|---------------------------------|----------|
-| 添加人脸                        | Enter human face ID        | The board enters a human face ID |
+| Enter face       | The board enters a human face ID. |
-| 识别一下                        | Recognize human face      | The board displays a recognized human face ID, or "WHO?" for an unrecognized face. |  
+| Recognize face   | The board displays a recognized human face ID, or "WHO?" for an unrecognized face. |  
-| 删除人脸                        | Delete human face ID       | The board deletes the latest human face ID entered and displays "XXX ID(S) LEFT". |
+| Delete face      | The board deletes the latest human face ID entered and displays "XXX ID(S) LEFT". |
 
-4. To switch between four working modes that are supported in the default firmware, first wake up the board with wake word, then say the speech command for a working mode:
+4. After waking up the board as described in step 2, you can also switch the board's working mode with speech commands. Once a speech command is recognized, the **Module Power LED** will blink.
 
-| Speech Commands for Different Working Modes | Meaning      | Response |
+| Speech Commands for Different Working Modes | Response |
-|---------------------------------|--------------------------|----------|
+|---------------------------------|----------|
-| 人脸识别                        | Human face recognition    | The board displays a blue rectangle if a human face is detected. |  
+| Face recognition    | The board displays a blue rectangle if a human face is detected. |  
-| 移动侦测                        | Motion detection          | The board displays a solid blue rectangle in upper-left corner if motion is detected. |
+| Motion detection    | The board displays a solid blue rectangle in upper-left corner if motion is detected. |
-| 仅显示                          | Display only              | The board displays only live video streaming. |
+| Display only        | The board displays only live video streaming. |
-| 停止工作                        | Stop working              | The board does nothing and displays Espressif logo. |
+| Stop working        | The board does nothing and displays Espressif logo. |
 
 Now you get the first experience with the board. The following sections provide further information about how to flash firmware onto the board, configuration options, related resources, and more.
 
@@ -211,14 +217,14 @@ This section provides instructions on how to do hardware/software setup and flas
 
 -   1 x ESP32-S3-EYE
 -   1 x USB 2.0 cable (Standard-A to Micro-B), for USB power supply and flashing firmware on to the board
--   Computer running Windows, Linux, or macOS
+-   1 x Computer running Windows, Linux, or macOS
 
 ## 2.2. Optional Hardware
 
 -   1 x MicroSD card
 -   1 x Li-ion battery
 
-> **Note**
+> **Notice**
 >
 > Be sure to use a Li-ion battery that has built-in protection circuit.
 
@@ -228,7 +234,7 @@ Prepare the board for loading of the first sample application:
  
 Connect the board with the computer through the **USB Port** using a USB cable. The **Module Power LED** should turn on. Assuming that a battery is not connected, the **Battery Red LED** will blink.
 
-Now the board should be ready for software setup.
+Now the board is ready for software setup.
 
 ## 2.4. Software Setup
 
@@ -245,11 +251,9 @@ This section provides more detailed information about the board's hardware.
 
 ## 3.1. Notes on GPIO Allocations
 
-Except for GPIO3 that can be used to configure LED statuses, all GPIOs of the **ESP32-S3-WROOM-1 Module** have already been used to control specific components or functions of the board. If you would like to configure any pins yourself, please refer to the schematics provided in Section [Related Documents](#5-related-documents).
+Except for GPIO3 that can be used to configure LED statuses, all GPIOs of the **ESP32-S3-WROOM-1** module have already been used to control specific components or functions of the board. If you would like to configure any pins yourself, please refer to the schematics provided in Section [Related Documents](#5-related-documents).
 
-## 3.2. Notes on Power Distribution
+## 3.2. Independent Module and Camera Power Supply
-
-### 3.2.1. Independent Module and Camera Power Supply
 
 The ESP32-S3-EYE board features independent power supplies to the camera and the remaining components. This should reduce noise in the audio signal from module components and improve overall performance of the components.
 
@@ -273,7 +277,35 @@ The ESP32-S3-EYE board features independent power supplies to the camera and the
 
 # 4. Hardware Revision Details
 
-This is the first revision of this board released.
+## 4.1. Revision History
+
+Compared to ESP32-S3-EYE v2.1, ESP32-S3-EYE v2.2 has two changes in hardware: 1) marking on the main board，2) additional current limiting resistor on the main board; and one change in firmware: additional support for English wake-up word and commands.
+
+Changes in hardware are described in detail below:
+
+1.  Marking on the (back of) main board: ESP32-S3-EYE v2.2 has marking "ESP32-S3-EYE-MB_V2.2" on the main board, while ESP32-S3-EYE v2.1 has marking "ESP32-S3-EYE-MB_V2.1" on the main board.
+
+| ESP32-S3-EYE-MB_V2.2 Marking      | ESP32-S3-EYE-MB_V2.1 Marking |
+|--------------------|----|
+|  ![ESP32-S3-EYE-MB_V2.2 Marking](../../_static/get-started/esp32-s3-eye-v2_2-marking.png) |![ESP32-S3-EYE-MB_V2.1 Marking](../../_static/get-started/esp32-s3-eye-v2_1-marking.png) |
+
+2.  The current limiting resistor R83 is added to the ESP32-S3-EYE v2.2 main board to protect the **Module Power LED** from burning in case GPIO3 is pulled up.
+
+| ESP32-S3-EYE v2.2 with R83     | ESP32-S3-EYE v2.1 Without R83  |
+|--------------------|----|
+|  ![ESP32-S3-EYE v2.2 with R83](../../_static/get-started/esp32-s3-eye-v2_2-resistor.png) |![ESP32-S3-EYE v2.1 Without R83](../../_static/get-started/esp32-s3-eye-v2_1-resistor.png) |
+
+3.  The **main board schematics**, **main board PCB layout diagrams**, **main board dimension diagrams**, **main board dimension source files** are updated because of the two hardware changes. (See [Related Documents](#5-related-documents)).
+
+## 4.2. known Issues
+
+ESP32-S3-EYE does not have a USB-to-UART bridge, which may cause a problem: If the program flashed onto the board keeps the chip rebooting, you cannot flash more programs onto the board.
+
+In case this issue occurs, you need to:
+
+- Hold down BOOT button and press RST button, then release RST button first, and BOOT button next. In this way, the board enters Firmware Download mode and you can start flashing program onto the board.
+- After flashing the program, press RST button to start the program.
+
 
 # 5. Related Documents
 
@@ -284,21 +316,27 @@ This is the first revision of this board released.
 
 ## 5.2. Schematic
 
--   [ESP32-S3-EYE_MB Schematic](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE-MB_20210913_V2.1.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.2 Main Board Schematic](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE-MB_20211201_V2.2.pdf) (PDF)
--   [ESP32-S3-EYE_SUB Schematic](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE_SUB_V1.1_20210913.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 Main Board Schematic](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE-MB_20210913_V2.1.pdf) (PDF)
+-   [ESP32-S3-EYE-SUB Sub Board Schematic](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE_SUB_V1.1_20210913.pdf) (PDF)
 
 ## 5.3. PCB Layout
 
--   [ESP32-S3-EYE_MB PCB layout](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_MB_V2.1_20210913.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.2 Main Board PCB Layout](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_MB_V2.2_20211201.pdf) (PDF)
--   [ESP32-S3-EYE_SUB PCB layout](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_SUB_V1.1_20210913.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 Main Board PCB Layout](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_MB_V2.1_20210913.pdf) (PDF)
+-   [ESP32-S3-EYE-SUB Sub Board PCB Layout](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_SUB_V1.1_20210913.pdf) (PDF)
 
 ## 5.4. Dimensions
 
--   [ESP32-S3-EYE_MB Top Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.1_20211111.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.2 Main Board Front Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.2_20211207.pdf) (PDF)
--   [ESP32-S3-EYE_MB Bottom Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.1_20211111.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 Main Board Front Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.1_20211111.pdf) (PDF)
--   [ESP32-S3-EYE_SUB Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_SUB_V1.1_20211111.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.2 Main Board Back Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.2_20211207.pdf) (PDF)
--   [ESP32-S3-EYE_MB Top Dimensions source file](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.1_20211111.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-MB v2.1 Main Board Back Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.1_20211111.pdf) (PDF)
--   [ESP32-S3-EYE_MB Bottom Dimensions source file](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.1_20211111.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-SUB Sub Board Dimensions](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_SUB_V1.1_20211111.pdf) (PDF)
--   [ESP32-S3-EYE_SUB Dimensions source file](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_SUB_V1.1_20211111.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-MB v2.2 Main Board Front Dimensions Source File](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.2_20211207.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-MB v2.1 Main Board Front Dimensions Source File](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.1_20211111.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-MB v2.2 Main Board Back Dimensions Source File](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.2_20211207.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-MB v2.1 Main Board Back Dimensions Source File](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.1_20211111.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
+-   [ESP32-S3-EYE-SUB Sub Board Dimensions Source File](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_SUB_V1.1_20211111.dxf) (DXF) - You can view it with [Autodesk Viewer](https://viewer.autodesk.com/) online
 
 For further design documentation for the board, please contact us at [<sales@espressif.com>](sales@espressif.com).

docs/zh_CN/get-started/ESP32-S3-EYE_Getting_Started_Guide.md

@@ -0,0 +1,343 @@
+# ESP32-S3-EYE v2.2 <!-- omit in toc -->
+
+[[English Version]](../../en/get-started/ESP32-S3-EYE_Getting_Started_Guide.md)
+
+- [1. 入门指南](#1-入门指南)
+  - [1.1. 概述](#11-概述)
+  - [1.2. ESP32-S3-EYE 与 ESP-EYE](#12-esp32-s3-eye-与-esp-eye)
+  - [1.3. 功能框图](#13-功能框图)
+  - [1.4. ESP32-S3-EYE-MB 主板组件](#14-esp32-s3-eye-mb-主板组件)
+  - [1.5. ESP32-S3-EYE-SUB 子板组件](#15-esp32-s3-eye-sub-子板组件)
+  - [1.6. 内含组件和包装](#16-内含组件和包装)
+    - [1.6.1. 零售订单](#161-零售订单)
+    - [1.6.2. 批量订单](#162-批量订单)
+  - [1.7. 默认固件和功能测试](#17-默认固件和功能测试)
+- [2. 开始开发应用](#2-开始开发应用)
+  - [2.1. 必备硬件](#21-必备硬件)
+  - [2.2. 可选硬件](#22-可选硬件)
+  - [2.3. 硬件设置](#23-硬件设置)
+  - [2.4. 软件设置](#24-软件设置)
+- [3. 硬件参考](#3-硬件参考)
+  - [3.1. GPIO 分配](#31-gpio-分配)
+  - [3.2. 独立的模组与摄像头供电电路](#32-独立的模组与摄像头供电电路)
+- [4. 硬件版本](#4-硬件版本)
+  - [4.1. 改版历史](#41-改版历史)
+  - [4.2. 已知问题](#42-已知问题)
+- [5. 相关文档](#5-相关文档)
+  - [5.1. 技术规格书](#51-技术规格书)
+  - [5.2. 原理图](#52-原理图)
+  - [5.3. PCB 布局图](#53-pcb-布局图)
+  - [5.4. 尺寸图](#54-尺寸图)
+
+本指南将帮助您快速上手 ESP32-S3-EYE v2.2，并提供该款开发板的详细信息。
+
+> **注意**
+>
+> 如果您使用的是 ESP32-S3-EYE v2.1，请参考本指南。v2.2 相对 v2.1 的变化在[硬件版本](#4-硬件版本)小节中列出。
+
+ESP32-S3-EYE 是[乐鑫](https://www.espressif.com/zh-hans/home)推出的一款小型 AI（人工智能）开发板，搭载 [ESP32-S3](https://www.espressif.com/zh-hans/products/socs/esp32-s3) 芯片和乐鑫 AI 开发框架 [ESP-WHO](https://github.com/espressif/esp-who/blob/master/README_CN.md)。开发板配置一个 2 百万像素的摄像头、一个 LCD 显示屏和一个麦克风，适用于图像识别和音频处理等应用。板上还配有 8 MB 八线 PSRAM 和 8 MB flash，具有充足的存储空间。此外，ESP32-S3 芯片还为开发板提供了 Wi-Fi 图传和 USB 端口调试等功能。您可以使用 ESP-WHO 开发各种 AIoT（人工智能物联网）应用，例如智能门铃、监控系统、人脸识别打卡机等。
+
+<center>
+
+| ![ESP32-S3-EYE](../../_static/get-started/ESP32-S3-EYE-isometric.png) | 
+|:--:| 
+|ESP32-S3-EYE|
+
+</center>
+
+本指南包括如下内容：
+
+-  [入门指南](#1-入门指南)：介绍了开发板的功能和特性、组件、包装，以及如何快速使用开发板。
+-  [开始开发应用](#2-开始开发应用)：说明了开发板烧录固件需要的硬件设置和软件设置。
+-  [硬件参考](#3-硬件参考)：详细介绍了开发板的硬件。
+-  [硬件版本](#4-硬件版本)：介绍硬件历史版本和已知问题，并提供链接至历史版本开发板的入门指南（如有）。
+-  [相关文档](#5-相关文档)：列出了相关文档的链接。
+
+
+# 1. 入门指南
+
+## 1.1. 概述
+
+ESP32-S3-EYE 开发板包含两部分：一块主板 ESP32-S3-EYE-MB，配置 ESP32-S3-WROOM-1 模组、摄像头、SD 卡槽、数字麦克风、USB 接口和功能按键等；一块子板 ESP32-S3-EYE-SUB，配置 LCD 显示屏等。主板和子板通过排针连接。
+
+
+## 1.2. ESP32-S3-EYE 与 ESP-EYE
+
+ESP32-S3-EYE 相比 [ESP-EYE](https://github.com/espressif/esp-who/blob/master/docs/zh_CN/get-started/ESP-EYE_Getting_Started_Guide.md) 支持更多功能。下表列出了两款开发板的主要不同之处：
+
+| 特性 | ESP32-S3-EYE | ESP-EYE | 
+|---------|--------------|-----------|
+| 内置芯片             | ESP32-S3         | ESP32              |
+| PSRAM                   | 8 MB 八线 PSRAM | 8 MB 四线 PSRAM    |
+| Flash                   | 8 MB flash       | 4 MB flash         |
+| LCD 显示屏               | 有              | 无               |
+| 加速度传感器             | 有              | 无                 |
+| 可选电源  | 外接锂电池 | 无               |
+| USB 至 UART 桥接器        | 不需要，由 ESP32-S3 USB Serial/JTAG 接口提供 | 需要 |
+| 天线连接器        | 不需要，由 ESP32-S3-WROOM-1 模组提供 | 需要 |
+
+
+## 1.3. 功能框图
+
+功能框图显示了主板 ESP32-S3-EYE-MB（左侧） 和子板 ESP32-S3-EYE-SUB（右侧）的主要组件，以及组件之间的连接方式。
+
+<center>
+
+| ![ESP32-S3-EYE 功能框图](../../_static/get-started/ESP32-S3-EYE_20210913_V03_SystemBlock.png) | 
+|:--:| 
+|ESP32-S3-EYE 功能框图|
+
+</center>
+
+下面分别介绍主板和子板上的主要组件。
+
+## 1.4. ESP32-S3-EYE-MB 主板组件
+
+<center>
+
+| ![ESP32-S3-EYE-MB - 正面和背面](../../_static/get-started/ESP32-S3-EYE_MB-annotated-photo.png) | 
+|:--:| 
+|ESP32-S3-EYE-MB - 正面和背面|
+
+</center>
+
+下面从摄像头开始依次介绍主板正面和背面的主要组件。
+
+| 序号 | 主要组件|       介绍 |
+|-----|----|--|
+| 1   | Camera（摄像头）                   | [OV2640](https://github.com/espressif/esp32-camera) 摄像头，200 万像素，66.5° 视角，最高支持 1600x1200 分辨率。开发程序时可以配置分辨率。|
+| 2   | Module Power LED（模组电源指示灯）   | 开发板连接 USB 电源，模组电源指示灯绿灯亮起。如果绿灯不亮，则表示 USB 电源未接入，或者 **5 V 转 3.3 V LDO** 损坏。软件可以通过配置 GPIO3 为开发板的不同状态设置不同的 LED 灯组合状态（常亮/熄灭，闪烁等）。注意 GPIO3 必须配置为开漏模式，否则可能损坏 LED 灯。|
+| 3   | Pin Headers（排针）              | 连接子板的排母。|
+| 4   | 5 V to 3.3 V LDO（5 V 转 3.3 V LDO）         | 模组电路的电源转换器，输入 5 V，输出 3.3 V。|
+| 5   | Digital Microphone（数字麦克风）       | MEMS 数字麦，I2S 通信，灵敏度 -26 dBFS，SNR 61 dB，3V3 供电。|
+| 6   | FPC Connector（FPC 接口）            | 通过 FPC 排线连接主板和子板。 |
+| 7   | Function Button（功能按键）          | 板子上有 6 个功能按键，除了 RST 键不能配置，您可以配置其他 5 个按键的功能。 |
+| 8   | ESP32-S3-WROOM-1         | ESP32-S3-WROOM-1 模组，内置 ESP32-S3R8 芯片，集成 Wi-Fi 和 Bluetooth 5 (LE) 子系统，还有专门的向量指令用于加速神经网络计算和信号处理。ESP32-S3R8 芯片叠封 8 MB PSRAM，模组还另外带有 8 MB flash，可灵活高效读取数据。开发板也兼容 ESP32-S3-WROOM-1U 模组。|
+| 9   | MicroSD Card Slot（MicroSD 卡槽）        | 可插入 MicroSD 卡，适用于需要扩充数据存储空间或备份的应用开发场景。|
+| 10  | 3.3 V to 1.5 V LDO（3.3 V 转 1.5 V LDO）       | 摄像头的电源转换器，输入 3.3 V，输出 1.5 V。|
+| 11  | 3.3 V to 2.8 V LDO （3.3 V 转 2.8 V LDO）      | 摄像头的电源转换器，输入 3.3 V，输出 2.8 V。|
+| 12  | USB Port（USB 接口）           | Micro-USB 接口，可用作开发板的 5 V 供电接口，也可作为通信接口，通过 GPIO19 和 GPIO20 与芯片通信。|
+  13  | Battery Soldering Points（电池焊点） | 可以焊接电池母座插头，用于外接锂电池，与 USB 供电二选一。请使用带有保护电路板和电流保险器组件的锂电池。建议电池规格：容量 >1000 mAh, 输出电压 3.7 V， 输入电压 4.2 V – 5 V。|
+| 14  | Battery Charger Chip（电池充电芯片）     | 1 A 线性锂电池充电器 (ME4054BM5G-N)，采用 ThinSOT 封装。充电电源来自 **USB 接口**。|
+| 15  | Battery Red LED（电池指示红灯）          | 开发板连接 USB 电源，不接电池的情况下，红灯闪烁。接电池状态下，电池充电正在进行时，红灯亮；电池充电完成后，红灯灭。 |
+| 16  | Accelerometer（加速度传感器）            | 三轴加速度传感器 (QMA7981)，用于屏幕旋转等使用场景。|
+
+
+## 1.5. ESP32-S3-EYE-SUB 子板组件
+
+<center>
+
+| ![ESP32-S3-EYE-SUB - 正面和背面](../../_static/get-started/ESP32-S3-EYE_SUB-annotated-photo.png) | 
+|:--:| 
+|ESP32-S3-EYE-SUB - 正面和背面|
+
+</center>
+
+下面从 LCD 显示屏开始逆时针依次介绍子板正面和背面的主要组件。
+
+| 主要组件|       介绍 |
+|--------------------|----|
+| LCD Display（LCD 显示屏）        | 1.3” LCD 显示屏，通过 SPI 总线连接芯片。 |
+| Strapping Pins（Strapping 管脚）     | 从主板引出的四个 strapping 管脚，空闲管脚测试点。|
+| Female Headers（排母）     | 连接主板上的排针。 |
+| LCD FPC Connector（LCD FPC 接口）  | 通过 FPC 排线连接子板和 LCD 显示屏。            |
+| LCD_RST            | LCD_RST 测试点。您可以通过控制信号重启 LCD 显示屏。|
+
+
+## 1.6. 内含组件和包装
+
+### 1.6.1. 零售订单
+
+如购买样品，每个开发板将以防静电袋或零售商选择的其他方式包装。每个包装内含：
+
+-  1 块 ESP32-S3-EYE-MB 主板
+-  1 块 ESP32-S3-EYE-SUB 子板
+
+主板和子板出厂时已组装好。
+
+零售订单请前往 <https://www.espressif.com/zh-hans/company/contact/buy-a-sample>。
+
+### 1.6.2. 批量订单
+
+如批量购买，开发板将以大纸板箱包装。
+
+批量订单请前往 <https://www.espressif.com/zh-hans/contact-us/sales-questions>。
+
+## 1.7. 默认固件和功能测试
+
+ESP32-S3-EYE 出厂即烧录[默认固件](https://github.com/espressif/esp-who/tree/master/default_bin/esp32-s3-eye) ，方便您立即上手使用开发板，体验语音唤醒、语音命令识别、人脸检测和识别的功能。
+
+使用开发板前，您需要准备以下硬件：
+
+-  1 套 ESP32-S3-EYE 开发板
+-  1 根 USB 2.0 数据线（标准 A 型转 Micro-B 型），为开发板接入电源
+
+通电前，请确保开发板完好无损，主板与子板已组装好。然后按照以下步骤开始使用开发板：
+
+1. 使用 USB 数据线连接开发板的 **USB 接口**与电源。开发板上电期间会有如下反应：
+
+* **模组电源指示灯**亮起并保持几秒钟，说明默认固件正在加载。
+* **模组电源指示灯**熄灭，说明默认固件加载完成。开发板默认进入人脸识别模式。
+* LCD 显示屏播放实时画面。
+
+现在，开发板已准备好等待执行命令。有两种方式操作开发板：物理按键或语音指令。下面先介绍通过物理按键操作开发板。
+
+2. 面对摄像头，显示屏上出现整张人脸，开发板开始检测人脸。检测到人脸后，显示屏上出现蓝色方框。
+3. 按下 **MENU** 键，开发板为检测到的人脸录入 ID（从 1 开始）。
+4. 按下 **UP+** 键，开发板进行人脸识别。若识别到之前检测并录入的人脸，显示屏上出现相应的人脸 ID；若无法识别，显示屏上出现 "WHO?"（谁？）。
+5. 按下 **PLAY** 键，删除最新录入的人脸 ID，显示屏上出现 "XXX ID(S) LEFT"（剩 XXX 个 ID）。
+
+下面介绍通过语音指令操作开发板：
+
+1. 重复上面步骤 1。
+2. 说出中文唤醒词“Hi 乐鑫”唤醒开发板。唤醒后，**模组电源指示灯**亮起，说明开发板在等待语音指令。
+3. 说出中文命令词，命令词识别成功后**模组电源指示灯**会闪烁，等待开发板执行命令。在人脸识别模式下，默认固件支持的中文命令词见下表。
+
+| 默认固件支持的中文命令词 | 设备反馈  |
+|----------------------|----------|
+| 添加人脸               | 开发板录入人脸 ID |
+| 识别一下               | 开发板显示识别到的人脸 ID。若无法识别，则显示 "WHO?"（谁？）。 |  
+| 删除人脸               | 开发板删除最新录入的人脸 ID，显示 "XXX ID(S) LEFT"（剩 XXX 个 ID）。|
+
+4. 您也可以在执行完步骤 2 唤醒开发板后通过命令词切换开发板的工作模式，命令词识别成功后**模组电源指示灯**会闪烁。不同工作模式的命令词见下表。
+
+| 不同工作模式的命令词 | 设备反馈           |
+|-------------------|--------------------------|
+| 人脸识别           | 开发板若检测到人脸，则显示蓝色方框。|  
+| 移动侦测           | 开发板若检测到物体移动，则左上角显示蓝色实心方框。|
+| 仅显示             | 开发板仅显示摄像头拍摄的实时画面。 |
+| 停止工作           | 开发板停止工作，仅显示乐鑫标志。 |
+
+至此您已经体验了开发板的主要功能。下面的章节将说明如何在开发板上烧录固件、硬件资源和相关文档等。
+
+# 2. 开始开发应用
+
+本小节介绍如何在开发板上烧录固件以及相关准备工作。
+
+## 2.1. 必备硬件
+
+-  1 套 ESP32-S3-EYE 开发板
+-  1 根 USB 2.0 数据线（标准 A 型转 Micro-B 型），用于为开发板接入电源，并向开发板烧录固件
+-  1 台电脑（Windows、Linux 或 macOS）
+
+## 2.2. 可选硬件
+
+-   1 个 MicroSD 存储卡
+-   1 块锂电池
+
+> **注意**
+>
+> 请使用带有保护电路板的锂电池。
+
+## 2.3. 硬件设置
+
+使用 USB 数据线连接开发板的 **USB 接口**与电源，**模组电源指示灯**应亮起。如果未接入电池，则**电池指示红灯**闪烁。
+
+硬件设置已完成，按照下列步骤配置软件。
+
+## 2.4. 软件设置
+
+准备开发工具，请前往 [ESP-WHO](https://github.com/espressif/esp-who/blob/master/README_CN.md) 文档查看以下步骤：
+
+1. [获取 ESP-IDF](https://github.com/espressif/esp-who/blob/master/README_CN.md#获取-esp-idf)，配置基于 ESP32-S3 的 C 语言 PC 开发环境。
+2. [获取 ESP-WHO](https://github.com/espressif/esp-who/blob/master/README_CN.md#获取-esp-who)，运行乐鑫图像处理开发框架。
+3. [运行 ESP-WHO 示例](https://github.com/espressif/esp-who/blob/master/README_CN.md#运行示例)。
+
+
+# 3. 硬件参考
+
+本小节介绍有关开发板硬件的更多信息。
+
+## 3.1. GPIO 分配
+
+除了 GPIO3 可用于配置 LED 灯组合状态，**ESP32-S3-WROOM-1** 模组上的其他 GPIO 均已用于控制开发板的组件或功能。如果您想自己配置管脚，请参考[相关文档](#5-相关文档)部分提供的原理图。
+
+## 3.2. 独立的模组与摄像头供电电路
+
+ESP32-S3-EYE 开发板为摄像头和 ESP32-S3-WROOM-1 模组及其他器件提供独立电源，这样可以减少模组电路上音频信号对摄像头电路的干扰，提高开发板的整体性能。
+
+<center>
+
+|![ESP32-S3-EYE - 模组供电电路](../../_static/get-started/ESP32-S3-EYE-v2-1-module-ps.png)| 
+|:--:| 
+|ESP32-S3-EYE - 模组供电电路|
+
+</center>
+
+
+<center>
+
+|![ESP32-S3-EYE - 摄像头供电电路](../../_static/get-started/ESP32-S3-EYE-v2-1-camera-ps.png)| 
+|:--:| 
+|ESP32-S3-EYE - 摄像头供电电路|
+
+</center>
+
+
+# 4. 硬件版本
+
+## 4.1. 改版历史
+
+ESP32-S3-EYE v2.2 相对于 ESP32-S3-EYE v2.1 在硬件方面有两处变更：1) 主板丝印，2) 主板增加限流电阻；固件方面一处变更：增加对英文唤醒词和英文命令词的支持（具体见[[英文版本文档]](../../en/get-started/ESP32-S3-EYE_Getting_Started_Guide.md)）。
+
+硬件方面的变更具体如下：
+
+1.  主板丝印（背面）：ESP32-S3-EYE v2.2 的主板丝印为 ESP32-S3-EYE-MB_V2.2，ESP32-S3-EYE v2.1 的主板丝印为 ESP32-S3-EYE-MB_V2.1。
+
+| ESP32-S3-EYE v2.2 主板丝印      | ESP32-S3-EYE v2.1 主板丝印 |
+|--------------------|----|
+|  ![ESP32-S3-EYE v2.2 主板丝印](../../_static/get-started/esp32-s3-eye-v2_2-marking.png) |![ESP32-S3-EYE v2.1 主板丝印](../../_static/get-started/esp32-s3-eye-v2_1-marking.png) |
+
+2.  ESP32-S3-EYE v2.2 的主板增加限流电阻 R83，防止用户误上拉 GPIO3 而烧坏**模组电源指示灯**。
+
+| ESP32-S3-EYE v2.2 限流电阻 R83 位置     | ESP32-S3-EYE v2.1 无限流电阻 R83  |
+|--------------------|----|
+|  ![ESP32-S3-EYE v2.2 限流电阻 R83 位置](../../_static/get-started/esp32-s3-eye-v2_2-resistor.png) |![ESP32-S3-EYE v2.1 无限流电阻 R83](../../_static/get-started/esp32-s3-eye-v2_1-resistor.png) |
+
+3.  因主板丝印变更和增加限流电阻同步更新**主板原理图**、**主板 PCB 布局图**、**主板尺寸图**、**主板尺寸图源文件**（见[相关文档](#5-相关文档)小节提供的文件）。
+   
+
+## 4.2. 已知问题
+
+ESP32-S3-EYE 没有 USB 至 UART 桥接器，可能会出现已烧写的程序不停重启时无法再烧写程序的情况。
+
+如果出现这个问题，您需要：
+
+1. 按住 BOOT 键再按住 RST 键，然后松开 RST 键，再松开 BOOT 键，然后开发板进入下载模式，开始下载程序。
+2. 下载完成后再按下 RST 键启动程序。
+
+
+# 5. 相关文档
+
+## 5.1. 技术规格书
+
+-   [ESP32-S3 技术规格书](https://www.espressif.com/sites/default/files/documentation/esp32-s3_datasheet_cn.pdf) (PDF)
+-   [ESP32-S3-WROOM-1 & ESP32-S3-WROOM-1U 技术规格书](https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_cn.pdf) (PDF)
+
+## 5.2. 原理图
+
+-   [ESP32-S3-EYE-MB v2.2 主板原理图](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE-MB_20211201_V2.2.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 主板原理图](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE-MB_20210913_V2.1.pdf) (PDF)
+-   [ESP32-S3-EYE-SUB 子板原理图](https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-EYE_SUB_V1.1_20210913.pdf) (PDF)
+
+## 5.3. PCB 布局图
+
+-   [ESP32-S3-EYE-MB v2.2 主板 PCB 布局图](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_MB_V2.2_20211201.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 主板 PCB 布局图](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_MB_V2.1_20210913.pdf) (PDF)
+-   [ESP32-S3-EYE-SUB 子板 PCB 布局图](https://dl.espressif.com/dl/schematics/PCB_ESP32-S3-EYE_SUB_V1.1_20210913.pdf) (PDF)
+
+## 5.4. 尺寸图
+
+-   [ESP32-S3-EYE-MB v2.2 主板正面尺寸图](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.2_20211207.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 主板正面尺寸图](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.1_20211111.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.2 主板背面尺寸图](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.2_20211207.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.1 主板背面尺寸图](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.1_20211111.pdf) (PDF)
+-   [ESP32-S3-EYE-SUB 子板尺寸图](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_SUB_V1.1_20211111.pdf) (PDF)
+-   [ESP32-S3-EYE-MB v2.2 主板正面尺寸图源文件](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.2_20211207.dxf) (DXF) - 可使用 [Autodesk Viewer](https://viewer.autodesk.com/) 查看
+-   [ESP32-S3-EYE-MB v2.1 主板正面尺寸图源文件](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_top_V2.1_20211111.dxf) (DXF) - 可使用 [Autodesk Viewer](https://viewer.autodesk.com/) 查看
+-   [ESP32-S3-EYE-MB v2.2 主板背面尺寸图源文件](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.2_20211207.dxf) (DXF) - 可使用 [Autodesk Viewer](https://viewer.autodesk.com/) 查看
+-   [ESP32-S3-EYE-MB v2.1 主板背面尺寸图源文件](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_MB_Bottom_V2.1_20211111.dxf) (DXF) - 可使用 [Autodesk Viewer](https://viewer.autodesk.com/) 查看
+-   [ESP32-S3-EYE-SUB 子板尺寸图源文件](https://dl.espressif.com/dl/schematics/DXF_ESP32-S3-EYE_SUB_V1.1_20211111.dxf) (DXF) - 可使用 [Autodesk Viewer](https://viewer.autodesk.com/) 查看
+
+有关本开发板的更多设计文档，请联系我们的商务部门 [<sales@espressif.com>](sales@espressif.com)。
+