ESP32-S3-LCD-1.85

1.85 inch, I2C QSPI
360×360

Overview

Introduction

ESP32-S3-LCD-1.85 is a microcontroller development board that supports 2.4GHz WiFi and BLE 5. It integrates large capacity Flash and PSRAM, has a 1.85inch capacitive touch screen (touch version optional) onboard, can smoothly run GUI interface programs such as LVGL. Combined with various peripheral interfaces, it is suitable for the quick development of the HMI and other ESP32-S3 applications.

Features

Equipped with high-performance Xtensa 32-bit LX7 dual-core processor, up to 240 MHz main frequency
Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (BLE), with onboard antenna
Built in 512KB SRAM and 384KB ROM, 16MB Flash and 8MB PSRAM
Onboard 1.85inch LCD display, 360×360 resolution, 262K color
Supports I2C interface to control touch, support interrupt (touch version only)
Leads out UART, I2C and some IO interfaces
Onboard audio decoding chip, MIC, QMI8658 six-axis sensor, RTC clock sensor, TF card slot and battery charging management module, etc.
Supports accurate control such as flexible clock and multiple power modes to realize low power consumption in different scenarios

Onboard Resources

1. ESP32-S3R8
Dual-core processor, up to 240MHz operating frequency

2. 16MB Flash

3. QST attitude sensor
QMI8658 (six-axis gyro accelerometer)

4. TCA9554PWR
GPIO expansion chip

5. PCM5101 audio decoding chip

6. Power amplifier chip

7. Battery recharge manager Chip

8. ME6217C33M5G
Low dropout regulator, 800mA output (Max.)

9. RTC clock chip
PCF85063 RTC clock

10. Patch ceramic antenna

11. IPEX Gen 1 connector
Switches to use external antenna via resoldering the resistor

12. TF card slot
Allowed to connect large capacity TF card

13. Speaker interface
Equipped with 8Ω 2W 2030 speaker

14. Speaker volume button

15. Microphone

16. UART interface
Only available when the UART Type-C port is not connected

17. Power indicator

18. USB Type-C interface

19. Connect the rechargeable RTC battery

20. Charge indicator
When connecting the system battery, lights up when charging, off when fully charged
(the light status is uncertain when the battery is not connected)

21. I2C interface
Connecting with internal chip, only supports the I2C peripherals and cannot be mapped to other functions

22. RESET button
Equipped with 8Ω 2W 2030 speaker

23. BOOT button

24. Battery header
MX1.25 2PIN connector, for 3.7V Lithium battery, supports charging and discharging

25. Battery power supply control button

Interfaces

I2C interface

Pin	Function	Description
GND	GND	Ground
3V3	3V3	External output 3.3V
SCL	SCL (GPIO10)	I2C clock pin, cannot be used as regular GPIO
SDA	SDA (GPIO11)	I2C data pin, cannot be used as regular GPIO

UART interface

Pin	Function	Description
GND	GND	Ground
3V3	3V3	External output 3.3V
TXD	TXD (GPIO43)	UART transmit data or as regular GPIO
RXD	RXD (GPIO44)	UART receive data or as regular GPIO

Dimensions

Specifications

Parameter Name	Parameter

Interface	USB Type-C

Controller chip	ESP32-S3

LCD type	TFT

LCD controller chip	Display: ST77916
LCD controller chip
Onboard devices	Attitude sensor: QMI8658
	RTC clock: PCF85063
	PCM audio decoding chip: PCM5101
	MIC
	TF
	Battery recharging manager module

Dimensions	49.95 (H) x 48.08 (V) (mm)

Internal Hardware Connection

LCD

LCD Pin	ESP32S3
LCD_SDA0	GPIO46
LCD_SDA1	GPIO45
LCD_SDA2	GPIO42
LCD_SDA3	GPIO41
LCD_SCK	GPIO40
LCD_CS	GPIO21
LCD_TE	GPIO18
LCD_RST	EXIO2
LCD_BL	GPIO5

TF Card

TF Card	ESP32S3
SD_D0 / MISO	GPIO16
SD_CMD / MOSI	GPIO17
SD_SCK / SCLK	GPIO14
SD_D3 / CS	EXIO3
SD_D1	NC
SD_D2	NC

QMI

QMI8658	ESP32S3
IMU_SCL	GPIO10
IMU_SDA	GPIO11
IMU_INT1	EXIO5
IMU_INT2	EXIO4

RTC

PCF85063ATL	ESP32S3
RTC_SCL	GPIO10
RTC_SDA	GPIO11
RTC_INT	GPIO9

MIC

Buzzer	ESP32S3
MIC_WS	GPIO2
MIC_SCK	GPIO15
MIC_SD	GPIO39

SPEAKER

PCM5101	ESP32S3
Speak_DIN	GPIO47
Speak_LRCK	GPIO38
Speak_BCK	GPIO48

Version Description

The development board is divided into touch version and non-touch version, please click on the product to view the corresponding instructions.


ESP32-S3-LCD-1.85 Without Touch Function	ESP32-S3-Touch-LCD-1.85 With Touch Function

Usage Instructions

ESP32-S3-LCD-1.85 currently provides two development tools and frameworks, Arduino IDE and ESP-IDF, providing flexible development options, you can choose the right development tool according to your project needs and personal habits.

Development Tools

Arduino IDE

Arduino IDE is an open source electronic prototyping platform, convenient and flexible, easy to get started. After a simple learning, you can start to develop quickly. At the same time, Arduino has a large global user community, providing an abundance of open source code, project examples and tutorials, as well as rich library resources, encapsulating complex functions, allowing developers to quickly implement various functions.

ESP-IDF

ESP-IDF, or full name Espressif IDE, is a professional development framework introduced by Espressif Technology for the ESP series chips. It is developed using the C language, including a compiler, debugger, and flashing tools, etc., and can be developed via the command lines or through an integrated development environment (such as Visual Studio Code with the Espressif IDF plugin). The plugin offers features such as code navigation, project management, and debugging.

Each of these two development approaches has its own advantages, and developers can choose according to their needs and skill levels. Arduino are suitable for beginners and non-professionals because they are easy to learn and quick to get started. ESP-IDF is a better choice for developers with a professional background or high performance requirements, as it provides more advanced development tools and greater control capabilities for the development of complex projects.

Components Preparation

ESP32-S3-LCD-1.85 x1
TF card with MP3 files x1
USB cable (Type-A to Type-C) x 1
2030 speaker 8Ω 2w× 1

Precautions

Please note that the computer username must be in English, the username in Chinese will lead to compilation errors
If you want to continue using the onboard Bluetooth device when enabling all onboard devices with the example provided, it is recommended to use a different audio library file with a small memory footprint (otherwise it will result in a large SRAM footprint)
The development board uses USB to download the demo. If the port cannot be recognized, please enter boot mode (press and hold the boot button, then connect to the computer, and then release the boot button). After downloading the demo, press the RESET button to run the demo.
The ESP32 3.0.2 on Arduino is based on ESP-IDF v5.1, which is quite different from the previous version based on ESP-IDF V4.X. After the following operations, the original demo may need to be adjusted for normal operation.

Before operating, it is recommended to browse the table of contents to quickly understand the document structure. For smooth operation, please read the FAQ carefully to understand possible problems in advance. All resources in the document are provided with hyperlinks for easy download.

Working with Arduino

This chapter introduces setting up the Arduino environment, including the Arduino IDE, management of ESP32 boards, installation of related libraries, program compilation and downloading, as well as testing demos. It aims to help users master the development board and facilitate secondary development.

Environment Setup

Download and install Arduino IDE

Click to visit the Arduino official website, select the corresponding system and system bit to download
Run the installer and install all by default

The environment setup is carried out on the Windows 10 system, Linux and Mac users can access Arduino-esp32 environment setup for reference. (To use on Mac, you need to install the MAC driver.)

Install ESP32 development board

Before using ESP32-related motherboards with the Arduino IDE, you must first install the software package for the esp32 by Espressif Systems development board
According to Board installation requirement, it is generally recommended to use Install Online. If online installation fails, use Install Offline.
For the installation tutorial, please refer to Arduino board manager tutorial

ESP32-S3-LCD-1.85 required development board installation description
Board name	Board installation requirement	Version number requirement
esp32 by Espressif Systems	"Install Offline" / "Install Online"	≥3.0.2

Install library

When installing Arduino libraries, there are usually two ways to choose from: Install online and Install offline. If the library installation requires offline installation, you must use the provided library file
For most libraries, users can easily search and install them through the online library manager of the Arduino software. However, some open-source libraries or custom libraries are not synchronized to the Arduino Library Manager, so they cannot be acquired through online searches. In this case, users can only manually install these libraries offline.
For library installation tutorial, please refer to Arduino library manager tutorial
ESP32-S3-LCD-1.85 library file is stored in the sample program, click here to jump: ESP32-S3-LCD-1.85 Demo

ESP32-S3-LCD-1.85 library file installation description
Library Name	Description	Version	Library Installation Requirement
LVGL	Graphical library	v8.3.10	"Install Offline"
ESP32-audioI2S-master	Audio decoding library	v2.0.0	"Install Offline"

For more learning and use of LVGL, please refer to LVGL official documentation

Run the First Arduino Demo

If you are just getting started with ESP32 and Arduino, and you don't know how to create, compile, flash, and run Arduino ESP32 programs, then please expand and take a look. Hope it can help you!

New Project

Run the Arduino IDE and select File -> New Sketch
Enter the code:

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println("Hello, World!");
  delay(2000);
}

Save the project and select File -> Save As.... In the pop-up menu, select the path to save the project, and enter a project name, such as Hello_World, click Save

Compile and Flash Demos

Select the corresponding development board, take the ESP32S3 motherboard as an example:

①. Click to select the dropdown menu option Select Other Board and Port;
②. Search for the required development board model esp32s3 dev module and select;
③. Select COM Port;
④. Save the selection.

Some development boards with specified version numbers support direct model selection, for example, "Waveshare ESP32-S3-LCD-1.69":

If the ESP32S3 mainboard only has a USB port, you need to enable USB CDC, as shown in the following diagram:

Compile and upload the program:

①. Compile the program; ②. Compile and download the program; ③. Download successful.

Open the Serial Monitor window, and the demo will print "Hello World!" every 2 seconds, and the operation is as follows:

Demo

ESP32-S3-LCD-1.85 demo
Demo	Basic Description	Dependency Library
LVGL_Arduino	Test onboard device functionality	LVGL, ESP32-audioI2S-master

Arduino project parameter setting

LVGL_Arduino

Demo description

This example demonstrates the functions of each device on the board, page 1 displays SD Card, Flash Size, Battery Voltage and other parameters, and page 2 shows the music playback interface; In addition, speech recognition is added to this demo.

Hardware connection

Insert the TF card into the development board
Connect the speaker to the development board
Connect the development board to the computer

Code analysis

setup(): Initialize hardware, configure peripherals, etc.
- Hardware initialization: setup() internally executes multiple initialization functions to configure and initialize hardware components connected to Arduino, such as RTC, gyroscope, LCD display, TF card, audio module, microphone, etc. With these initializations, it is ensured that the hardware is working properly
- Initialize the LVGL graphics library (Lvgl_Init()) and Simulated touch function (Simulated_Touch_Init())
- Finally, call Lvgl_Example1() and Driver_Loop() to further set the initial state of the system and create tasks

loop(): Mainly used for GUI updates and task scheduling
- LVGL task loop: Lvgl_Loop() is a loop function of the LVGL library that handles graphical interface updates, event responses, and other UI-related operations. In embedded systems, graphics libraries often need to be called frequently in the main loop to keep the interface refreshed and the interaction real-time
- Task scheduling control: vTaskDelay(pdMS_TO_TICKS(5)) is used to pause the task for 5 milliseconds. vTaskDelay is a delay function in FreeRTOS that aims to reduce CPU usage, avoid taking up too much time slice, and ensure that other tasks of the system, such as peripheral processing, can be performed on time

Simulated_Touch_Init(): Responsible for initializing the settings related to simulated touch and preparing for simulated touch operations
- pinMode(BOOT_KEY_PIN, INPUT): Sets the BOOT_KEY_PIN pin to input mode so that the button input on that pin can be detected
- Initializes a style style_checked, set properties such as background color, opacity, border color, width, padding, rounded corners, shadow color, width, spread, horizontal and vertical offset, which may be used to highlight the currently selected object
- xTaskCreatePinnedToCore(TouchTask, "TouchTask", 4096, NULL, 4, NULL, 1): Creates a task named "TouchTask" and pin it to a specific core for execution. This task may be used to continuously button input and simulate touch operations

TouchTask(void *parameter): Continuously detects the input status of the two buttons (represented by PWR_KEY_Input_PIN and BOOT_KEY_PIN), and sets the corresponding flags according to the button status to trigger different actions
- In an infinite loop, first use the digitalRead function to detect the input state of PWR_KEY_Input_PIN. If the pin is pressed down (i.e., read low), set the PWR_Flag flag to 1. If the Boot_Flag has been set at this time, it means that both keys may be pressed at the same time, and the OK_Flag flag is set to 1. If the pin is not pressed and the OK_Flag is false, it means the button has been released and no special operation was triggered. In this case, increase the value of the Switch_count variable
- Next, check the input status of BOOT_KEY_PIN. If the pin is pressed down, set the PWR_Flag flag to 1. If the PWR_Flag has been set at this time, it means that both buttons may be pressed at the same time, and the OK_Flag flag is set to 1. If the pin is not pressed and the OK_Flag is false, it means the button has been released and no special operation was triggered. In this case, increase the value of the Next_count variable
- Finally use vTaskDelay(pdMS_TO_TICKS(10)) for a short delay to avoid excessive CPU usage

Result demonstration

LCD screen display parameter description

Parameter	Function	Description
SD Card	Display TF card size	Connect the TF card, if the recognition fails, please format the TF card to FAT32 format (please wait for a while to reset and check again if the recognition fails for the first time)
Flash Size	Display Flash size	Current onboard 16MB Flash
Battery Voltage	Battery voltage	The battery voltage can be detected when the battery is connected
Angular deflection	Display the angular deflection of the board	Display the offset in three directions
RTC Time	Display RTC time	Display current RTC time If the RTC time is not consistent with the current time, because the data cannot be retained in the power-off state, if you need to keep the RTC time normal, you need to connect the RTC battery and update the RTC time
Wireless scan	Display the number of scanned WiFi	When it finishes, display Scan Finish at the end
Backlight brightness	Brightness slider	Adjust screen brightness

Page 2 is the UI page for playing mp3 audio in the root directory of the TF card
This demo can be configured to simulate touch functionality by selecting components using the BOOT button and the PWR button. Pressing both buttons simultaneously indicates a confirm press
This program enables speech recognition by default, the wake-up word is "hi esp", after waking up, you can speak the command after the backlight is dimmed (if the backlight is not dimmed, it means that it has not been woken up, the recognition requirements are strict, the pronunciation needs to be standard, and the speech speed is slowed down)
The following are available in several formats of MIC test audio (Please note that every time the hi esp wake-up fails, please reset the audio to the playback location of the wake-up word and replay it)
Please do not perform speech recognition when using the speaker to play audio
The reason the wake-up word plays twice in the test audio is due to the current firmware version's initial wake-up requiring the device to be focused (an analogy), and the current firmware does not permit the disabling of this function

// Commands
Turn on the backlight
Turn off the backlight
Backlight is brightest
Backlight is darkest

Switch to Chinese/English recognition model

The initial environment setting is for English recognition, and you can switch to Chinese recognition model or back to English recognition model by following these steps

Switch to Chinese recognition model

Chinese recognition environment setup

Download the provided demo file Demo using Chinese model
Enter the path C:\Users\Waveshare\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.2\libraries\ESP_SR\src (Waveshare is the computer username)
Replace the esp32-hal-sr.c in this path with the downloaded file

Download the Chinese model Chinese model - wake-up word hi 乐鑫
Enter the path C:\Users\Waveshare\AppData\Local\Arduino15\packages\esp32\tools\esp32-arduino-libs\idf-release_v5.1-bd2b9390ef\esp32s3\esp_sr (Waveshare is the computer username)
Replace the srmodels.bin in this path with the downloaded file
Modify the recognition command in the demo to Chinese command (Pinyin)

Switch to English recognition model

English recognition environment setup

The initial state of the environment is the English recognition environment by default, and if it is not converted to Chinese, the following modifications are not made
If it has been previously modified to Chinese recognition, download the provided demo file Demo using English model
Enter the path C:\Users\Waveshare\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.2\libraries\ESP_SR\src (Waveshare is the computer username)
Replace the esp32-hal-sr.c in this path with the downloaded file

Download the English model English model - wake-up word hi esp
Enter the path C:\Users\Waveshare\AppData\Local\Arduino15\packages\esp32\tools\esp32-arduino-libs\idf-release_v5.1-bd2b9390ef\esp32s3\esp_sr (Waveshare is the computer username)
Replace the srmodels.bin in this path with the downloaded file
Modify the recognition command in the demo to English command (phonemes)

Working with ESP-IDF

This chapter introduces setting up the ESP-IDF environment setup, including the installation of Visual Studio and the Espressif IDF plugin, program compilation, downloading, and testing of example programs, to assist users in mastering the development board and facilitating secondary development.

Environment Setup

Download and install Visual Studio

Open the download page of VScode official website, choose the corresponding system and system bit to download
After running the installation package, the rest can be installed by default, but here for the subsequent experience, it is recommended to check boxes 1, 2, and 3
- After the first two items are enabled, you can open VSCode directly by right-clicking files or directories, which can improve the subsequent user experience.
- After the third item is enabled, you can select VSCode directly when you choose how to open it.

The environment setup is carried out on the Windows 10 system, Linux and Mac users can access ESP-IDF environment setup for reference

Install Espressif IDF Plugin

It is generally recommended to use Install Online. If online installation fails due to network factor, use Install OIffline
For more information about how to install the Espressif IDF plugin, see Install Espressif IDF Plugin

ESP32-S3-LCD-1.85 required Espressif IDF version description
Plugin name	Plugin installation requirement	Version number requirement
Espressif IDF	"Install Offline" / "Install Online"	≥5.3.1

Run the First ESP-IDF Demo

If you are just getting started with ESP32 and ESP-IDF, and you don't know how to create, compile, flash, and run ESP-IDF ESP32 programs, then please expand and take a look. Hope it can help you!

New Project

Create Demo

Using the shortcut F1, enter esp-idf:show examples projects

Select your current IDF version

Take the Hello world demo as an example

①Select the corresponding demo
②Its readme will state what chip the demo applies to (how to use the demo and the file structure are described below, omitted here)
③Click to create the demo

Select the path to save the demo, and require that the demos cannot use folders with the same name

Modify COM Port

The corresponding COM ports are shown here, click to modify them
Please select the COM ports according to your device (You can view it from the device manager)
In case of a download failure, please press the Reset button for more than 1 second or enter download mode, and wait for the PC to recognize the device again before downloading once more

Modify Driver Object

Select the object we need to drive, which is our main chip ESP32S3

Choose the path to openocd, it doesn't affect us here, so let's just choose one

Other Status Bar Functions

①.ESP-IDF Development Environment Version Manager, when our project requires differentiation of development environment versions, it can be managed by installing different versions of ESP-IDF. When the project uses a specific version, it can be switched to by utilizing it
②.Device flashing COM port, select to flash the compiled program into the chip
③.Select set-target chip model, select the corresponding chip model, for example, ESP32-P4-NANO needs to choose esp32p4 as the target chip
④.menuconfig, click it to Modify sdkconfig configuration file Project configuration details
⑤.fullclean button, when the project compilation error or other operations pollute the compiled content, you can clean up all the compiled content by clicking it
⑥.Build project, when a project satisfies the build, click this button to compile
⑦.Current download mode, the default is UART
⑧.flash button, when a project build is completed, select the COM port of the corresponding development board, and click this button to flash the compiled firmware to the chip
⑨.monitor enable flashing port monitoring, when a project passes through Build --> Flash, click this button to view the log of output from flashing port and debugging port, so as to observe whether the application works normally
⑩.Debug
⑪.Build Flash Monitor one-click button, which is used to continuously execute Build --> Flash --> Monitor, often referred to as "little flame"

Compile, Flash and Serial Port Monitor

Click on the all-in-one button we described before to compile, flash and open the serial port monitor

It may take a long time to compile especially for the first time

During this process, the ESP-IDF may take up a lot of CPU resources, so it may cause the system to lag
If it is the first time to flash the program for a new project, you will need to select the download method, and select UART

This can also be changed later in the Download methods section (click on it to pop up the options)

As it comes with the onboard automatic download circuit, it can be downloaded automatically without manual operation
After successful download, it will automatically enter the serial monitor, you can see the chip output the corresponding information and be prompted to restart after 10S

Use the IDF Demos

The following takes ESP32-S3-LCD-1.47-Demo as an example to introduce the two opening methods of the project and the general steps of use, and the detailed explanation of the ESP-IDF project. If you use other projects, the operation steps can be applied similarly.

Open In the Software

Open VScode software and select the folder to open the demo

Select the provided ESP-IDF example and click to select the file (located in the /Demo/ESP-IDF path under demo)

Open from Outside the Software

Select the project directory correctly and open the project, otherwise it will affect the compilation and flashing of subsequent programs

After connecting the device, select the COM port and model, click below to compile and flash to achieve program control

ESP-IDF Project Details

Component: The components in ESP-IDF are the basic modules for building applications, each component is usually a relatively independent code base or library, which can implement specific functions or services, and can be reused by applications or other components, similar to the definition of libraries in Python development.
- Component reference: The import of libraries in the Python development environment only requires to "import library name or path", while ESP-IDF is based on the C language, and the importing of libraries is configured and defined through CMakeLists.txt.
- The purpose of CmakeLists.txt: When compiling ESP-IDF, the build tool CMake first reads the content of the top-level CMakeLists.txt in the project directory to read the build rules and identify the content to be compiled. When the required components and demos are imported into the CMakeLists.txt, the compilation tool CMake will import each content that needs to be compiled according to the index. The compilation process is as follows:

Demo

ESP32-S3-LCD-1.85 demo
Demo	Basic Description
ESP32-S3-LCD-1.85-Test	Test onboard device functionality

ESP32-S3-LCD-1.85-Test

Demo description

This example demonstrates the functions of each device on the board, page 1 displays SD Card, Flash Size, Battery Voltage and other parameters, and page 2 shows the music playback interface; In addition, speech recognition is added to this demo.

Hardware connection

Insert the TF card into the development board
Connect the speaker to the development board
Connect the development board to the computer

Code analysis

MIC_Speech_init()
- This function is mainly used to initialize the speech recognition module. First set the initial state, then initialize the I2S interface to receive microphone audio data. Then configure the AFE (Audio Frontend Processing) module parameters and create an AFE data instance. Finally, create two tasks, one responsible for audio data reading and processing (feed_handler), another for speech command detection and recognition (detect_hander)
detect_hander()
- This function runs in a standalone task and processes the AFE module output to detect speech commands. It determines a multi-network model based on the configuration and prints the active speech commands. In the loop, the results are continuously obtained from the AFE module, which are processed according to different wake-up states and multi-network detection states, such as performing corresponding actions when wake-up words are detected, setting command states and adjusting LCD backlights when speech commands are detected. At the end of the task, the multi-network model instance is destroyed to release resources

Result demonstration

LCD screen display parameter description

Parameter	Function	Description
SD Card	Display TF card size	Connect the TF card, if the recognition fails, please format the TF card to FAT32 format (please wait for a while to reset and check again if the recognition fails for the first time)
Flash Size	Display Flash size	Current onboard 16MB Flash
Battery Voltage	Battery voltage	The battery voltage can be detected when the battery is connected
Angular deflection	Display the angular deflection of the board	Display the offset in three directions
RTC Time	Display RTC time	Display current RTC time If the RTC time is not consistent with the current time, because the data cannot be retained in the power-off state, if you need to keep the RTC time normal, you need to connect the RTC battery and update the RTC time
Wireless scan	Display the number of scanned WiFi	When it finishes, display Scan Finish at the end
Backlight brightness	Brightness slider	Adjust screen brightness

Page 2 is the UI page for playing mp3 audio in the root directory of the TF card
This demo can be configured to simulate touch functionality by selecting components using the BOOT button and the PWR button. Pressing both buttons simultaneously indicates a confirm press
This program enables speech recognition by default, the wake-up word is "hi esp", after waking up, you can speak the command after the backlight is dimmed (if the backlight is not dimmed, it means that it has not been woken up, the recognition requirements are strict, the pronunciation needs to be standard, and the speech speed is slowed down)
The following are available in several formats of MIC test audio (Please note that every time the hi esp wake-up fails, please reset the audio to the playback location of the wake-up word and replay it)
Please do not perform speech recognition when using the speaker to play audio
The reason the wake-up word plays twice in the test audio is due to the current firmware version's initial wake-up requiring the device to be focused (an analogy), and the current firmware does not permit the disabling of this function

// Commands
Turn on the backlight
Turn off the backlight
Backlight is brightest
Backlight is darkest

Switch to Chinese/English recognition model

The initial environment setting is for English recognition, and you can switch to Chinese recognition model or back to English recognition model by following these steps

Switch to Chinese/English recognition model

Delete two files in the project

Enter the file sdkconfig.defaults, find here.

Comment ① to switch to the English recognition model
Comment ② to switch to the Chinese recognition model

Generate Speech Control Command

Environment preparation

Check if your computer has a Python environment
Open the command line: win+r -> enter cmd

①.Enter python --version and the python version number appears, which means that it is installed
②.Type where python to see where python is installed

The Python environment under the C drive is the Python environment that is automatically installed when VS Code is installed;
The disk E contains the Python environment used in the following steps;

If you do not have installed environment, please refer to Python Environment Installation Tutorial, please continue if it is installed

On the command line, enter pip install g2p_en to install the g2p_en package
Install the resource package in the corresponding user's C:\Users\username\AppData\Roaming directory, and double-click to extract the file
On the command line, enter pip install pypinyin to install the pypinyin library

Generate Chinese Pinyin

Download the Chinese command generation file
Command line switch path to Chinese command generation folder (the path varies from person to person, the following is only for reference)

cd /d E:\download\Generate_Chinese_command

Execute the command line multinet_pinyin.py to generate Chinese pinyin

python multinet_pinyin.py "Chinese to be converted to Pinyin"
Example: Python multinet_pinyin.py "你好微雪电子"

Generate English phonemes

Download the English command generation file
Command line switch path to English command generation folder (the path varies from person to person, the following is only for reference)

cd /d E:\download\Generate_English_command

Execute the command line gen_sr_commands.py to generate English phonemes

python gen_sr_commands.py "English to be converted to phonemes"
Example: python gen_sr_commands.py "hello waveshare"

Command modification

In Arduino

In ESP-IDF

Chinese commands

English commands

Flash Firmware Flashing and Erasing

The current demo provides test firmware, which can be used to test whether the onboard device functions properly by directly flashing the test firmware
bin file path:
```
...\ESP32-S3-LCD-1.85-Demo\Firmware
```

Flash firmware flashing and erasing for reference

Resources

Schematic diagram

ESP32-S3-LCD-1.85 Schematic diagram

Project diagram

ESP32-S3-LCD-1.85 Structure chart (2D)

Demo

ESP32-S3-LCD-1.85 Demo

Datasheets

ESP32-S3

Other components

Software tools

FAQ

Question: After the module downloads the demo and re-downloads it, why sometimes it can't connect to the serial port or the flashing fails?

Answer:

Click the Reset button for more than 1 second, wait for the PC to re-recognize the device and then download again
Long press the BOOT button, press RESET at the same time, then release RESET, then release the BOOT button, at this time the module can enter the download mode, which can solve most of the problems that can not be downloaded.
Press and hold the BOOT button to reconnect the USB cable, and then release the BOOT button after the USB cable is connected, at this time the module can enter the download mode, which can solve most of the problems that can not be downloaded.

Question: Why does the module keep resetting and flicker when viewed the recognition status from the device manager?

Answer:

It may be due to Flash blank and the USB port is not stable, you can long-press the BOOT button, press RESET at the same time, and then release RESET, and then release the BOOT button, at this time the module can enter the download mode to flash the firmware (demo) to solve the situation.

Question: How to deal with the first compilation of the program being extremely slow?

Answer:

It's normal for the first compilation to be slow, just be patient

Question: What should I do if I can't find the AppData folder?

Answer:

Some AppData folders are hidden by default and can be set to show.
English system: Explorer->View->Check "Hidden items"
Chinese system: File Explorer -> View -> Display -> Check "Hidden Items”

Question: How do I check the COM port I use?

Answer:

Windows system:

①View through Device Manager: Press the Windows + R keys to open the "Run" dialog box; input devmgmt.msc and press Enter to open the Device Manager; expand the "Ports (COM and LPT)" section, where all COM ports and their current statuses will be listed.
②Use the command prompt to view: Open the Command Prompt (CMD), enter the "mode" command, which will display status information for all COM ports.
③Check hardware connections: If you have already connected external devices to the COM port, the device usually occupies a port number, which can be determined by checking the connected hardware.

Linux system:

①Use the dmesg command to view: Open the terminal.
①Use the ls command to view: Enter ls /dev/ttyS* or ls /dev/ttyUSB* to list all serial port devices.
③Use the setserial command to view: Enter setserial -g /dev/ttyS* to view the configuration information of all serial port devices.

Question: Why does ESP-IDF report this error?

Answer:

This situation is that the TF card is not installed or the TF card cannot be recognized. If this situation occurs, please wait for a period of time to reset the device. If it still cannot be resolved, please format the TF card to FAT32 format. If it still fails, please try a different TF card

Question: Why does the program flashing fail when using a MAC device?

Answer:

Install MAC Driver and flash again.

Question: What is the screen refresh rate? (Frame rate)

Answer:

Depending on the demo you run, different demos have different refresh frame rates.

Question: Can this be extended to connect a camera?

Answer:

No

Question: When I run a program (Serial.println()) that uses a serial port, the Serial Monitor in my Arduino IDE does not show any data?

Answer:

Whether you use the USB to UART tool to connect the UART pins, or enable USB CDC in Tools

Question: Can Wi-Fi and Bluetooth be used simultaneously?

Answer:

Yes, it can be used simultaneously, but due to the larger memory usage of audio, the audio function cannot be turned on at the same time

Question: Which battery can be used?

Answer:

3.7V lithium rechargeable battery with PH1.25 2P connector.

Question: What capacity lithium battery is recommended?

Answer:

Use the one that corresponds to our interface and output voltage, the capacity depending on customer needs

Question: What addresses does the I2C onboard device occupy?

Answer:

0x15, 0x20, 0x51

Question: Why is there no output after successfully burning the code with no issues?

Answer:

Check the schematic diagram for different development boards with Type-C interfaces, and handle the output accordingly:
- For development boards with direct USB output, printf function is supported for printing output. If you want to support output via the Serial function, you will need to enable the USB CDC On Boot feature or declare HWCDC.
- For development boards with UART to USB conversion, both printf and Serial functions are supported for printing output, and there is no need to enable USB CDC On Boot.

Question: How to use SquareLine Studio to design interfaces?

Answer:

Refer to SquareLine Studio tutorial

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ESP32-S3-LCD-1.85

Overview

Introduction

Features

Onboard Resources

Interfaces

Dimensions

Specifications

Internal Hardware Connection

Version Description

Usage Instructions

Development Tools

Arduino IDE

ESP-IDF

Components Preparation

Precautions

Working with Arduino

Environment Setup

Download and install Arduino IDE

Install ESP32 development board

Install library

Run the First Arduino Demo

New Project

Compile and Flash Demos

Demo

Arduino project parameter setting

LVGL_Arduino

Switch to Chinese/English recognition model

Switch to Chinese recognition model

Switch to English recognition model

Working with ESP-IDF

Environment Setup

Download and install Visual Studio

Install Espressif IDF Plugin

Run the First ESP-IDF Demo

New Project

Create Demo

Modify COM Port

Modify Driver Object

Other Status Bar Functions

Compile, Flash and Serial Port Monitor

Use the IDF Demos

Open In the Software

Open from Outside the Software

ESP-IDF Project Details

Demo

ESP32-S3-LCD-1.85-Test

Switch to Chinese/English recognition model

Switch to Chinese/English recognition model

Generate Speech Control Command

Environment preparation

Generate Chinese Pinyin

Generate English phonemes

Command modification

In Arduino

In ESP-IDF

Flash Firmware Flashing and Erasing

Resources

Schematic diagram

Project diagram

Demo

Datasheets

ESP32-S3

Other components

Software tools

Arduino

VScode

Firmware flashing tool

Other resource links

FAQ

Support