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$42.9
ESP32-S3 3.97-inch e-ink display development board features an 800 × 480 pixel resolution, supports Wi-Fi and BLE 5, has an onboard microphone, and supports AI voice interaction.



This product is a high-performance, highly integrated microcontroller development board designed by Waveshare. It features an ESP32-S3 microcontroller, supporting both Wi-Fi and BLE dual-mode communication. It has an onboard 3.97-inch e-ink screen with extremely low power consumption and ambient light visibility, making it suitable for portable devices and long-battery-life applications. It integrates an RTC real-time clock, an SHTC3 temperature and humidity sensor, a Micro SD card slot, a low-power audio codec chip, and a power management chip. It provides a flexible and reliable development platform for applications such as IoT terminals, electronic tags, and portable displays.
| Display panel | ePaper | Display color | 黑白 |
|---|---|---|---|
| Operating voltage | 3.3V | Gray levels | 4 |
| Display size | 86.40 × 51.84 (mm) | Global refresh | 3.5s |
| resolution | 800 × 480 pixels | Quick refresh | 2.8s |
| Viewing angle | >170° | Partial refresh | 0.6s |
| Refresh power consumption | <40mW | Four-level grayscale refresh | 3.5s |




Function Introduction



Wi-Fi and Bluetooth SoC module, operating at 240MHz, packaged with 8MB PSRAM and 16MB Flash.
Provides ambient temperature and humidity measurement, facilitating environmental monitoring functions.
RTC clock chip, supporting time hold function
Supports customization of button functions in three directions.
The program can control all power sources when powered by a lithium battery.
Press and hold BOOT, then power cycle to enter download mode.
Audio power amplifier chip
Low-power audio codec chip
A six-axis inertial measurement unit (IMU) containing a 3-axis gyroscope and a 3-axis accelerometer.
Used to power the RTC when no battery is connected to the lithium battery interface.
The MX1.25 2PIN connector can be used to connect a 3.7V lithium battery, supporting charging and discharging.
Highly integrated power management chip
