Introduction
This manual provides essential information for setting up, operating, and maintaining your Waveshare ESP32-S3 Development Board with a 1.28-inch Round Touch LCD. This compact MCU board integrates an Xtensa 32-bit LX7 dual-core processor, Wi-Fi, Bluetooth, a capacitive touch display, and a 6-axis IMU sensor, making it suitable for various embedded development projects.
Contenu du colis
Vérifiez que tous les éléments énumérés ci-dessous sont inclus dans votre colis :
- ESP32-S3-Touch-LCD-1.28 Development Board x1
- SH1.0 12PIN Cable x1

Figure 1: Package Contents - ESP32-S3-Touch-LCD-1.28 board and SH1.0 12PIN cable.
Caractéristiques
The Waveshare ESP32-S3-Touch-LCD-1.28 is a high-performance MCU board designed for ease of development and integration. Key features include:
- Processeur: Processeur double cœur Xtensa LX7 32 bits, fréquence principale jusqu'à 240 MHz.
- Connectivité sans fil: Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) with an onboard antenna.
- Mémoire: Built-in 512KB SRAM and 384KB ROM, with onboard 2MB PSRAM and an external 16MB Flash memory.
- Interface: Type-C connector for modern connectivity and ease of use.
- Afficher: Onboard 1.28-inch capacitive touch display with 240×240 resolution and 65K colors.
- Capteurs: Onboard QMI8658 6-axis IMU (3-axis accelerometer and 3-axis gyroscope) for motion detection.
- Gestion de l'alimentation: Onboard 3.7V lithium battery recharge/discharge header.
- GPIO : 6 × GPIO pins available via SH1.0 connector.
- Efficacité énergétique : Supports flexible clock, module power supply independent setting, and other controls for low power consumption.
- USB série : Integrated USB serial port full-speed controller, with flexible GPIO pin configuration.

Figure 2 : Plusview of ESP32-S3-Touch-LCD-1.28 key features.
What's On Board
This section identifies the main components on the ESP32-S3-Touch-LCD-1.28 board:
- ESP32-S3R2 : The System-on-Chip (SoC) with Wi-Fi and Bluetooth, operating up to 240MHz, with onboard 2MB PSRAM.
- W25Q128JVSIQ: Mémoire flash NOR de 16 Mo.
- CH343P : USB to UART chip for serial communication.
- ME6217C33M5G : 800mA output, low dropout, high rejection rate.
- ETA6096: High-efficiency Lithium battery recharge manager.
- QMI8658: 6-axis IMU, including a 3-axis gyroscope and a 3-axis accelerometer.
- MX1.25 battery header: MX1.25 2P connector for 3.7V Lithium battery, supporting charging and discharging.
- Connecteur USB Type-C : Supports USB1.1 hosts and slave devices.
- Bouton de réinitialisation: Réinitialise la carte.
- Bouton de démarrage : Press before resetting to enter download mode.

Figure 3: Labeled components of the ESP32-S3-Touch-LCD-1.28 board.
Définition de la broche
The board provides several General Purpose Input/Output (GPIO) pins and power connections via the SH1.0 connector. Understanding these pins is crucial for connecting external components.

Figure 4: Pin definitions for the ESP32-S3-Touch-LCD-1.28 board.
- GND : Connexion à la terre.
- VSYS: System power supply.
- RÉINITIALISER: System reset pin.
- BATEAU: Boot mode selection pin.
- 3V3: 3.3V power output.
- GPIO 15, 16, 17, 18, 21, 33: General Purpose Input/Output pins for connecting peripherals.
Installation
Follow these steps to set up your ESP32-S3 Development Board:
- Connectez-vous à l'ordinateur : Use a USB Type-C cable to connect the board to your computer. The board will draw power from the USB connection.
- Installation du pilote : Your operating system may automatically install necessary drivers. If not, you may need to install the CH343P USB-to-UART bridge driver. Refer to the Waveshare product wiki for specific driver download links.
- Environnement de développement : Install a suitable development environment such as Arduino IDE with ESP32 board support or ESP-IDF.
- Premier programme : Load a simple example program (e.g., a 'Hello World' or a display test) to verify the board's functionality.
- Connexion de la batterie (en option) : If using a 3.7V Lithium battery, connect it to the MX1.25 battery header. Ensure correct polarity.
Mode d'emploi
Once set up, you can begin interacting with your ESP32-S3 board:
- Mise sous tension : The board powers on automatically when connected via USB or a battery.
- Interactions avec l'affichage : The 1.28-inch round capacitive touch display allows for direct user input. Develop your application to respond to touch gestures.
- Programmation: Upload your code using the chosen development environment. Ensure the correct COM port and board settings are selected.
- Wi-Fi/Bluetooth : Utilize the integrated Wi-Fi and Bluetooth capabilities for network communication or connecting to other devices.
- Capteur IMU : Access data from the QMI8658 6-axis IMU (accelerometer and gyroscope) for motion-sensing applications.

Figure 5: Demonstrating touch interaction with the display.
Entretien
Un entretien approprié garantit la longévité et le fonctionnement fiable de votre carte de développement :
- Nettoyage: Use a soft, dry cloth to clean the board and display. Avoid liquid cleaners or abrasive materials.
- Stockage: Store the board in a dry, anti-static environment when not in use. Avoid extreme temperatures and humidity.
- Manutention: Manipulez la carte par ses bords pour éviter tout contact avec les composants sensibles. L'électricité statique peut endommager les composants électroniques.
- Mises à jour du micrologiciel : Regularly check the Waveshare official website or product wiki for firmware updates or new library versions to ensure optimal performance and access to new features.
Dépannage
En cas de problème, veuillez suivre les étapes de dépannage suivantes :
- Carte non détectée :
- Ensure the USB Type-C cable is securely connected to both the board and your computer.
- Verify that the CH343P USB-to-UART driver is correctly installed.
- Essayez un autre port USB ou un autre câble.
- Program Upload Fails:
- Vérifiez si le port COM correct est sélectionné dans votre IDE.
- Ensure the correct board type (ESP32-S3) is selected.
- Press and hold the BOOT button, then press and release the RESET button, then release the BOOT button to enter download mode before uploading.
- L'affichage ne fonctionne pas :
- Verify that your code initializes the display correctly.
- Check for any loose connections if external display components were used (not applicable for the integrated display).
- Problèmes de connectivité Wi-Fi/Bluetooth :
- Ensure your code correctly configures Wi-Fi or Bluetooth parameters (SSID, password, etc.).
- Vérifiez la présence d'interférences provenant d'autres appareils fonctionnant sur la bande 2.4 GHz.
Caractéristiques
| Fonctionnalité | Détail |
|---|---|
| Processeur | Processeur double cœur Xtensa LX7 32 bits, jusqu'à 240 MHz |
| Taille de la mémoire RAM installée | 512 Ko de SRAM |
| Mémoire vive de PSRAM | 2 Mo à bord |
| Mémoire flash | 16 MB external |
| Wifi | 2.4 GHz (802.11 b/g/n) |
| Bluetooth | Bluetooth 5 (LE) |
| Afficher | 1.28-inch Round Capacitive Touch LCD, 240×240 resolution, 65K color |
| Capteur IMU | QMI8658 6-axis (3-axis accelerometer + 3-axis gyroscope) |
| Interface USB | Type-C, USB1.1 host/slave |
| Connecteur de batterie | MX1.25 2P for 3.7V Lithium battery |
| Broches GPIO | 6 × via SH1.0 connector |
| Prise en charge du système d'exploitation | FreeRTOS, Linux |
Dimensions du contour
The physical dimensions of the ESP32-S3-Touch-LCD-1.28 board are provided below for integration into projects or enclosures.

Figure 6: Outline dimensions of the ESP32-S3-Touch-LCD-1.28 board (Unit: mm).
Garantie et assistance
Waveshare products are designed for reliability and performance. For specific warranty information, please refer to the official Waveshare website or the documentation provided with your purchase. For technical support, resources, and community forums, visit the Waveshare product wiki or contact their customer service directly. Always ensure you are using the latest drivers and software libraries for optimal performance.