ESP32-S3-LCD-2.8B
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Overview
Introduction
ESP32-S3-LCD-2.8B is a microcontroller development board that supports 2.4GHz WiFi and BLE 5. It integrates large capacity Flash and PSRAM and has onboard 2.8inch RGB screen, can smoothly run GUI 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 240MHz main frequency
- Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (BLE), with onboard antenna
- Built in 512KB SRAM, 384KB ROM, 8MB PSRAM, and 16MB Flash
- Onboard 2.8inch RGB screen with 480×640 resolution
- Adapting UART, I2C and some IO interfaces, integrates full-speed USB port
- Onboard QMI8658 6-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
Specifications
Item | Parameter |
Interface | USB Type-C / UART Type-C |
Controller chip | ESP32-S3 |
LCD type | TFT |
LCD controller chip | Display: ST7701 |
Touch: GT911 | |
Onboard devices | Attitude sensor: QMI8658 |
RTC clock: PCF85063 | |
TF | |
Buzzer | |
Battery recharging manager module | |
Dimensions |
47.9 mm * 66.7 mm (Without touch control) |
LCD Screen Parameters
Onboard Resources
1. ESP32-S3R8 2. 16MB Flash 3. QST attitude sensor 4. SMD antenna 5. TCA9554PWR 6. RTC clock chip 7. MP1605GTF-Z 8. Battery recharge manager Chip 9. Buzzer 10. TF card slot (back) 11. BOOT button |
12. RESET button 13. IPEX Gen 1 connector 14. 2*12PIN 2.54mm header 15. RTC battery header 16. Battery header 17. UART interface 18. Charge indicator 19. USB Type-C interface 20. Power indicator 21. I2C interface 22. Battery power supply control button |
Interfaces
- 12*2PIN 2.54mm header
Description | Function | Pin | Pin | Function | Description |
Ground | GND | G | G | GND | Ground |
External output 3.3V | 3V3 | 3V3 | 3V3 | 3V3 | External output 3.3V |
I2C data pin, cannot be used as regular GPIO | SDA (GPIO15) | SDA | TXD | TXD (GPIO43) | UART transmit data or as regular GPIO |
I2C clock pin, cannot be used as regular GPIO | SCL (GPIO7) | SCL | RXD | RXD (GPIO44) | UART receive data or as regular GPIO |
Lead out idle GPIOs | GPIO16 | 16 | 37 | GPIO37 | Used for internal PSRAM, not recommended |
Used for reading battery voltage, solderable corresponding resistor | GPIO4 | 4 | 36 | GPIO36 | Used for internal PSRAM, not recommended |
Connected to BOOT button, can be used as a regular GPIO | GPIO0 | 0 | 35 | GPIO35 | Used for internal PSRAM, not recommended |
USB differential cable or as GPIO | USB differential cable (GPIO20) | D+ | 34 | GPIO34 | Used for internal PSRAM, not recommended |
USB differential cable or as GPIO | USB differential cable (GPIO19) | D- | 33 | GPIO33 | Used for internal PSRAM, not recommended |
Ground | GND | G | G | GND | Ground |
Voltage output of USB through diode | 5V | VCC | BAT | BAT | Battery voltage |
Direct output of USB voltage | 5V | 5V | 5V | 5V | Direct output of USB voltage |
- 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 |
- I2C interface
Pin | Function | Description |
GND | GND | Ground |
3V3 | 3V3 | External output 3.3V |
SCL | SCL (GPIO7) | I2C clock pin, cannot be used as regular GPIO |
SDA | SDA (GPIO15) | I2C data pin, cannot be used as regular GPIO |
Dimensions
Without Touch Control
With Touch Control
Internal Hardware Connection
LCD
LCD Pin | ESP32S3 |
LCD_BL | GPIO6 |
LCD_RST | EXIO1 |
LCD_SDA | GPIO1 |
LCD_SCL | GPIO2 |
LCD_CS | EXIO3 |
PCLK | GPIO41 |
DE | GPIO40 |
VSYNC | GPIO39 |
HSYNC | GPIO38 |
B0 | NC |
B1 | GPIO5 |
B2 | GPIO45 |
B3 | GPIO48 |
B4 | GPIO47 |
B5 | GPIO21 |
G0 | GPIO14 |
G1 | GPIO13 |
G2 | GPIO12 |
G3 | GPIO11 |
G4 | GPIO10 |
G5 | GPIO9 |
R0 | NC |
R1 | GPIO46 |
R2 | GPIO3 |
R3 | GPIO8 |
R4 | GPIO18 |
R5 | GPIO17 |
TP_SDA | GPIO15 |
TP_SCL | GPIO7 |
TP_INT | GPIO16 |
TP_RST | EXIO2 |
TF Card
TF Card | ESP32S3 |
SD_D0 / MISO | GPIO42 |
SD_CMD / MOSI | GPIO1 |
SD_SCK / SCLK | GPIO2 |
SD_D3 / CS | EXIO4 |
SD_D1 | NC |
SD_D2 | NC |
QMI
QMI8658 | ESP32S3 |
IMU_SCL | GPIO7 |
IMU_SDA | GPIO15 |
IMU_INT1 | EXIO5 |
IMU_INT2 | EXIO6 |
RTC
PCF85063ATL | ESP32S3 |
RTC_SCL | GPIO7 |
RTC_SDA | GPIO15 |
RTC_INT | EXIO7 |
Buzzer
Buzzer | ESP32S3 |
Buzzer_Control | EXIO8 |
BAT
BAT | ESP32S3 |
BAT_ADC | GPIO4 |
Version Description
ESP32-S3-LCD-2.8B Without Touch Control |
ESP32-S3-Touch-LCD-2.8B With Touch Control |
Usage Instructions
ESP32-S3-LCD-2.8B 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
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-2.8B x1
- TF card x 1
- USB cable (Type-A to Type-C) x 1
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
Install ESP32 Development Board
- Must first install the development board esp32-XIP-3.0.2.
- Only supports Install Offline.
- For installation tutorials, please refer to esp32-XIP-3.0.2 Development board installation.
Board name | Board installation requirement | Instruction |
---|---|---|
esp32-XIP-3.0.2 | "Install Offline" | The "esp32-XIP-3.0.2" board must be installed according to the installation tutorial |
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-2.8B library file path:
..\ESP32-S3-LCD-2.8B-Demo\Arduino\libraries
Library Name | Description | Version | Library Installation Requirement |
---|---|---|---|
LVGL | Graphical library | v8.3.10 | "Install Offline" |
OneButton | Button library | v2.6.1 | "Install Offline" |
Run the First Arduino Demo
New Project
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, clickSave
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
Demo | Basic Description | Dependency Library |
---|---|---|
LVGL_Arduino | Test onboard device functionality | LVGL |
LVGL_Arduino
Hardware connection
- Insert the TF card into the development board (can be used without a TF card)
- Connect the development board to the computer
Code analysis
- Driver_Init ()
- Initializes multiple hardware components, including flash testing, battery initialization, I2C bus initialization, chip-specific initialization, external IO settings, backlight initialization, real-time clock initialization, and gyroscope initialization, etc., to prepare the hardware for the normal operation of the system
- Driver_Loop ()
- As a continuous task, it constantly cycles to handle the gyroscope and real-time clock operations, and retrieves the battery voltage. Loops are executed every 100 milliseconds to avoid overusing CPU resources
- setup ()
- The setup function for Arduino, performing a series of initialization operations. It includes wireless module testing, hardware initialization, LCD initialization, TF card initialization, LVGL initialization, invoking LVGL's example functions, and creating a task to perform a hardware loop operation
- loop()
- The main loop function of Arduino, primarily calls the LVGL loop processing function, and introduces a 5 millisecond delay to ensure that the system's graphical interface can continuously update
Demo flashing
- Select the Waveshare ESP32S3 XIP model and port
- Set development board parameters
- Flash the demo
Result demonstration
- LCD screen display
- After the program is successfully burned, you can use the BOOT button to control the interface
- Click: Select the next control option
- Double click: Select the previous control option
- Long Press: Control the selected control option
- 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 |
The buzzer test | Buzzer control page | Can control buzzer switch |
Backlight brightness | Brightness adjustment slider | Can control screen brightness |
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 demos, 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.
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
Plugin name | Plugin installation requirement | Version number requirement |
---|---|---|
Espressif IDF | "Install Offline" / "Install Online" | ≥5.3.1 |
Run the First ESP-IDF Demo
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
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-levelCMakeLists.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 theCMakeLists.txt
, the compilation toolCMake
will import each content that needs to be compiled according to the index. The compilation process is as follows:
- 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
Demo
Demo | Basic Description |
---|---|
ESP32-S3-LCD-2.8B-Test | Test onboard device functionality |
ESP32-S3-LCD-2.8B-Test
Hardware connection
- Insert the TF card into the development board (can be used without a TF card)
- Connect the development board to the computer
Code analysis
- Driver_Init()
- This function performs hardware initialization and creates a task. It initializes the flash memory, the battery, the I2C bus, the real-time clock, the gyroscope, and external IO. Then create a task
Driver_Loop
that continuously processes the gyroscope, the real-time clock, and gets the battery voltage, executing a loop operation every 100 milliseconds.
- This function performs hardware initialization and creates a task. It initializes the flash memory, the battery, the I2C bus, the real-time clock, the gyroscope, and external IO. Then create a task
- Driver_Loop()
- As a continuous task, it cycles through the gyroscope and real-time clock operations, and retrieves the battery voltage. In this way, the status of these hardware devices is continuously updated.
- app_main (): Drives the onboard device
- This is the main entry function of the program. First initialize the wireless module, and then call
Driver_Init
for hardware initialization. Next, initialize the LCD display, TF card, LVGL graphics library and analog touch input in sequence. Calling the example functionLvgl_Example1
of LVGL demonstrates specific graphical interface effects. In the main loop, it delays once every 10 milliseconds and callslv_timer_handler
to handle LVGL's timer events, ensuring the normal operation and updates of the graphical interface.
- This is the main entry function of the program. First initialize the wireless module, and then call
Result demonstration
- LCD screen display
- After the program is successfully burned, you can use the BOOT button to control the interface
- Click: Select the next control option
- Double click: Select the previous control option
- Long Press: Control the selected control option
- 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 |
The buzzer test | Buzzer control page | Can control buzzer switch |
Backlight brightness | Brightness adjustment slider | Can control screen brightness |
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-2.8B-Demo\Firmware
Resources
Schematic Diagram
Demo
Driver
Datasheets
ESP32-S3
Display
Other Components
Software Tools
Arduino
- Arduino IDE Official download link
- ESP32-Arduino official documentation
- Arduino-ESP32 offline component package
VScode
Firmware Flashing Tool
Other Resource Links
FAQ
- 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.
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.
- It's normal for the first compilation to be slow, just be patient
- 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"
- 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.
- 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
- 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.
- The screen supports 262k color, but due to ESP limitations, RGB565 is used, and it is actually 65k
Support
Technical Support
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