Wonrabai ESP32-S3 1.75-inch AMOLED Round Touch Display Development Board

1. Introduction

The Wonrabai ESP32-S3 1.75-inch AMOLED Round Touch Display Development Board is a versatile and powerful platform designed for various embedded projects, including wearables, IoT devices, and AI speech interaction applications. It integrates an ESP32-S3R8 Xtensa 32-bit LX7 dual-core processor, a high-resolution AMOLED capacitive touch display, and a comprehensive suite of peripherals for advanced development.

This manual provides essential information for setting up, operating, and maintaining your development board, ensuring you can effectively utilize its capabilities.

2. Key Features

The ESP32-S3 Development Board offers a rich set of features:

• Processor: ESP32-S3R8 Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency.
• Connectivity: Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) with an onboard antenna.
• Memory: Built-in 512KB SRAM, 384KB ROM, onboard 8MB PSRAM, and external 16MB Flash memory.
• Display: 1.75-inch AMOLED capacitive touch display with 466 × 466 resolution, 16.7M colors, and 178° wide viewing angle.
• Audio: Onboard audio codec for high-quality audio processing, dual digital microphone array for noise reduction and echo cancellation, and support for AI speech interaction.
• Sensors: Onboard QMI8658 6-axis IMU (3-axis accelerometer and 3-axis gyroscope) for motion detection.
• Power Management: AXP2101 IC for efficient power management, supporting multiple voltage outputs, battery charging, and optimization.
• RTC: Onboard PCF85063 RTC chip for uninterrupted timekeeping.
• Expansion: TF card slot for extended storage, 8PIN 2.54mm header for GPIO and UART, and reserved pads for I2C and expanded IO interfaces.
• Interface: Type-C connector for power and data.

Figure 2.1: Overview of ESP32-S3 Development Board Features

Figure 2.2: ESP32-S3-Touch-AMOLED-1.75 Version Options and Feature List

Figure 2.3: AMOLED Screen Benefits and Wide Viewing Angle

Figure 2.4: Onboard Audio Codec and AI Speech Interaction

Figure 2.5: Development Environment and Wireless Support

3. Package Contents

Verify that all items are present in your package:

• ESP32-S3-Touch-AMOLED-1.75 with case x1
• 8Ω 2W speaker x1

Figure 3.1: Package Contents

4. Hardware Overview

Familiarize yourself with the components and interfaces of the ESP32-S3 Development Board:

Figure 4.1: ESP32-S3 Development Board Component Layout

5. Setup Instructions

Follow these steps for initial setup:

1. Connect Speaker: If using the included speaker, connect its MX1.25 connector to the corresponding header (No. 6 in Figure 4.1) on the development board.
2. Power Connection: Connect the development board to a power source using a Type-C USB cable. The Type-C port (No. 14 in Figure 4.1) also serves as the data interface for programming and debugging.
3. Battery (Optional): For portable applications, connect a 3.7V Lithium battery to the MX1.25 battery header (No. 16 in Figure 4.1). The board's power management IC will handle charging and discharging.
4. Initial Power On: Press the PWR button (No. 4 in Figure 4.1) to power on the device. The AMOLED display should illuminate.
5. Development Environment: For programming, refer to the online tutorial for setting up your preferred development environment (e.g., ESP-IDF, Arduino IDE).

6. Operating Instructions

Basic operation of the ESP32-S3 Development Board:

• Power On/Off: Use the PWR button (No. 4) to turn the device on or off.
• Display Interaction: The 1.75-inch AMOLED display is capacitive touch-enabled. Interact with on-screen elements by tapping or swiping as programmed.
• AI Speech Interaction: Utilize the dual digital microphones (No. 12) for voice input. The onboard audio codec and echo cancellation chip enhance audio quality for speech recognition. Access to online large model platforms (e.g., DeepSeek, Doubao, GPT) can be integrated through custom firmware.
• Programmable Buttons: The PWR and BOOT buttons can be configured for custom functions within your application.
• Data Storage: Insert a TF card into the TF card slot for extended storage and data transfer, suitable for logging or media playback.
• Motion Sensing: The QMI8658 6-axis IMU (No. 9) can detect motion gestures, count steps, and provide orientation data for various applications.

7. Maintenance

To ensure the longevity and optimal performance of your development board:

• Cleaning: Use a soft, dry cloth to clean the display and case. Avoid abrasive cleaners or solvents.
• Storage: Store the board in a cool, dry environment, away from direct sunlight and extreme temperatures.
• Handling: Handle the board with care to avoid physical damage. Avoid static discharge by working on an anti-static mat if possible.
• Firmware Updates: Regularly check the official resources for firmware updates to benefit from performance improvements and new features.

8. Troubleshooting

If you encounter issues, refer to the following common problems and solutions:

• Device does not power on:
  • Ensure the Type-C cable is securely connected to a working power source.
  • If using a battery, ensure it is charged and properly connected.
  • Press the PWR button firmly.
• Display is blank or unresponsive:
  • Verify the device is powered on.
  • Check your firmware for display initialization errors.
  • Ensure the display driver (CO5300) and touch chip (CST9217) are correctly configured in your code.
• Wi-Fi or Bluetooth connectivity issues:
  • Confirm that the onboard antenna is not obstructed.
  • Check your code for correct Wi-Fi/Bluetooth initialization and credentials.
  • Ensure the device is within range of the access point or Bluetooth device.
• Microphone or speaker not working:
  • Ensure the speaker is correctly connected to the MX1.25 header.
  • Verify audio codec and microphone drivers are correctly implemented in your firmware.
  • Check volume settings in your application.

For more detailed troubleshooting and development resources, please refer to the online tutorial and community forums.

9. Specifications

Figure 9.1: Outline Dimensions

10. Warranty and Support

For comprehensive online tutorials, usage guides, development resources, and support, please visit the official resource page:

https://n9.cl/rr145

This link provides access to detailed documentation, example code, and community support to assist you in your development projects.