Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Processor | Dual-core ESP32-S3-WROOM-1 (Xtensa LX7) |
| Display Type | 3.97-inch E-Ink (Black & White) |
| Display Resolution | 640 x 400 pixels |
| Connectivity | Wi-Fi 2.4GHz and Bluetooth 5 (LE) |
| Voice Interface | Built-in I2S microphone and speaker header |
| AI Support | Optimized for XiaoZhi AI and ESP-IDF |
| Flash Memory | 8MB PSRAM, 16MB Flash |
| Interface Ports | USB-C, GPIO headers, JTAG, I2C, SPI |
| Power Supply | 5V via USB-C or Li-Po battery connector |
| Dimensions | 98mm x 65mm x 12mm |
Anonymous
Mar 30, 2026
Rating: 4/5
Good learning tool for ESP32-S3
As a student, this board taught me a lot about driving E-Ink displays. The only downside is that the refresh rate is naturally slow due to the screen technology, not the board.
Anonymous
Mar 25, 2026
Rating: 4/5
Great hardware, documentation could be better
The board itself is high quality and the screen looks amazing. However, finding specific pinout details for the audio codec required some digging in the GitHub repo.
Anonymous
Mar 18, 2026
Rating: 5/5
Excellent value for prototyping
I used this to build a smart weather station. The WiFi connectivity is stable and the black and white screen is perfectly readable in direct sunlight.
Anonymous
Mar 10, 2026
Rating: 5/5
Voice features work out of the box
Impressed by how easily the voice interaction module integrated with my Home Assistant setup. The microphone sensitivity is adjustable and works well.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for low-power IoT dashboards
The E-Ink display is crisp and the power consumption is incredibly low. Setting up the XiaoZhi AI voice interaction was smoother than expected using the provided examples.
Anonymous
Mar 07, 2026
Rating: 5/5
Robust and reliable
Been running this board for two weeks straight on a battery pack. The deep sleep modes combined with the E-Ink display make it last forever.
Q: Does the package include the antenna?
A: Yes, the onboard PCB antenna is integrated into the board. No external antenna is required for standard Wi-Fi and Bluetooth usage.
Q: Does this board support MicroPython?
A: Yes, the ESP32-S3 chip fully supports MicroPython. You can flash the firmware via USB-C and start coding immediately.
Q: Is there a built-in battery charging circuit?
A: Yes, it includes a TP4056-compatible charging circuit for single-cell Li-Po batteries via the dedicated 2-pin connector.
Q: What framework is best for the voice interaction features?
A: We recommend using the ESP-IDF framework for the most robust performance with XiaoZhi AI, though Arduino core wrappers are available for simpler implementations.
Q: Can I connect a color E-Ink display instead?
A: This board is specifically calibrated and pinned for the included 3.97-inch B&W panel. While the interface is standard SPI, driving a different color panel would require significant driver modifications.
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