ESP32-S3 3.97inch e-Paper Development Board, 800 × 480 Resolution, Supports Wi-Fi / BLE 5, And AI Voice Interaction, Onboard Microphone

The ESP32-S3-ePaper-3.97 is a high-performance, highly integrated microcontroller development board designed by Waveshare. Equipped with an ESP32-S3 microcontroller, supports dual-mode Wi-Fi and BLE communication. Onboard 3.97inch e-paper display, features ultra-low power consumption and ambient light readability, suitable for portable devices and long-Batt-life scenarios. Integrated with an RTC chip, SHTC3 temperature and humidity sensor, TF card slot, low-power audio codec chip circuit, and Lithium Batt recharge management circuit. It provides a flexible and reliable development platform for IoT terminals, electronic tags, portable displays, and other applications. 

ESP32-S3 3.97inch e-Paper Development Board, 800 × 480 Resolution, Supports Wi-Fi / BLE 5, And AI Voice Interaction, Onboard Microphone

ESP32-S3 3.97inch
e-Paper Development Board

low power, wide viewing angle, paper-like effect without electricity

Version options

ESP32-S3-ePaper-3.97-EN
Without Lithium Batt

ESP32-S3-ePaper-3.97
Comes with a MX1.25 3.7V Lithium Batt

EESP32-S3-ePaper-3.97-Kit
Basic kit, equipped with a MX1.25 3.7V Lithium Batt, USB cable, 16GB TF card and card reader

Features

The ESP32-S3-ePaper-3.97 is a high-performance, highly integrated microcontroller development board designed by Waveshare. Equipped with an ESP32-S3 microcontroller, supports dual-mode Wi-Fi and BLE communication. Onboard 3.97inch e-paper display, features ultra-low power consumption and ambient light readability, suitable for portable devices and long-Batt-life scenarios. Integrated with an RTC chip, SHTC3 temperature and humidity sensor, TF card slot, low-power audio codec chip circuit, and Lithium Batt recharge management circuit. It provides a flexible and reliable development platform for IoT terminals, electronic tags, portable displays, and other applications.

• Adopts ESP32-S3R8 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 (LE), with onboard antenna
• Built-in 512KB Static RAM, 384KB ROM, with integrated 8MB PSRAM and external 16MB Flash
• Onboard 3.97inch e-paper display, 800 × 480 resolution, features high contrast and wide viewing angle
• Onboard audio codec chip, supports voice capture and playback, enabling AI voice interaction applications
• Onboard QMI8658 6-axis IMU (3-axis accelerometer and 3-axis gyroscope) for detecting motion gestures, counting steps, etc.
• Onboard PCF85063 RTC chip and SHTC3 temperature & humidity sensor for accurate RTC management and environmental monitoring
• Onboard TG28 power management chip, supports 3.7V MX1.25 Lithium Batt for uninterrupted power supply, with a reserved backup Batt header to ensure continuous RTC functionality during main Batt replacement
• Adopts TG28 chip for efficient power management, supports multiple voltage outputs, Batt charging, Batt management, and Batt life optimization, etc.
• Type-C port, improving device compatibility, easier to use
• Onboard TF card slot for storage expansion and rapid data transfer, suitable for data logging, media playback, and other applications, simplifying circuit design
• Onboard programmable PWR and BOOT side buttons for customized function development

Specifications

Onboard audio codec chip

Supports high-quality audio processing, providing clear and high-quality
audio input and output

Supports AI Voice Interaction

Allows access to online large model platforms such as DeepSeek, Doubao, etc

Rotary switch for easier page turning

Adopts 3-way rotary navigation switch design to reduce repetitive tapping during long reading and browsing

Application Scenarios

Suitable for Voice Interaction and e-Reader, etc

Voice Interaction

E-Reader

Electronic Calendar

Weather Forecast Display

Function Overview

Supports real-time temperature and humidity detection

Supports selecting the corresponding time zone

Supports ESP-IDF, Arduino IDE

Comprehensive SDK, dev resources, and tutorials to help you easily get started

What's On Board

1. ESP32-S3-WROOM-1-N16R8
   Wi-Fi and Bluetooth SoC, 240MHz operating frequency, with integrated 8MB Flash and 16MB PSRAM
2. SHTC3 temperature and humidity sensor
   provides ambient temperature and humidity measurement, enabling environmental monitoring function
3. PCF85063
   RTC chip with timekeeping function
4. Rotary button
   supports customizable button functions in three directions
5. PWR button
   enables power control via software configuration when using Lithium Batt for power supply
6. BOOT button
   press it when powering on to enter download mode
7. NS4150B
   Audio amplifier chip

8. ES8311
   low-power audio codec chip
9. QMI8658
   6-axis IMU includes a 3-axis gyroscope and a 3-axis accelerometer
10. MX1.25 speaker header
11. MX1.25 RTC backup Batt header
    for powering the RTC when the main Lithium Batt is not connected
12. MX1.25 Lithium Batt header
    MX1.25 2PIN connector for connecting 3.7V Lithium Batt, supports charging and discharging
13. 3.97inch e-paper display interface
14. TG28
    highly integrated power management chip
15. Microphone
16. Type-C port
17. TF card slot

Outline Dimensions

Resources & Services

Wiki: docs.waveshare.com/ESP32-S3-ePaper-3.97