Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Display Size | 3.97 inches |
| Resolution | 540 x 960 pixels |
| Microcontroller | ESP32-S3 Dual-Core Xtensa LX7 |
| Connectivity | Wi-Fi 2.4GHz and Bluetooth 5 (LE) |
| Voice Feature | On-board microphone for AI voice interaction |
| Interface | USB Type-C for power and programming |
| Storage | 16MB Flash, 8MB PSRAM |
| Power Supply | 5V via USB or Li-Po battery connector |
| Operating Temperature | -20°C to 70°C |
| Dimensions | 108mm x 68mm x 12mm |
Anonymous
Mar 27, 2026
Rating: 5/5
Low power consumption winner
Ideally suited for battery-powered projects. The deep sleep modes combined with the e-ink display allow my project to run for weeks on a single charge.
Anonymous
Mar 11, 2026
Rating: 5/5
Solid build quality
The PCB layout is clean, and the connectors feel durable. Integrating it with Home Assistant was straightforward. Highly recommend for industrial control prototypes.
Anonymous
Mar 11, 2026
Rating: 4/5
Good for static UIs
Works great for displaying weather, clocks, or status info. Don't expect video speeds, but that's not what e-ink is for. The voice command feature adds a nice modern touch.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for IoT Dashboards
The e-ink display is crisp and the ESP32-S3 handles Wi-Fi connectivity effortlessly. Setting up the voice interaction was simpler than expected using the provided libraries.
Anonymous
Mar 04, 2026
Rating: 4/5
Great hardware, docs could be better
Hardware quality is excellent and the screen refresh rate is decent for e-ink. I wish the documentation for the specific voice AI models was a bit more detailed, but community support helped.
Anonymous
Mar 01, 2026
Rating: 5/5
Excellent learning tool
Bought this for a university project on smart home interfaces. The combination of touch, voice, and wireless makes it a comprehensive development platform.
Q: Does it come with a case?
A: No, the product includes only the development board. However, 3D printing files for a case are available in our GitHub repository.
Q: Is the touchscreen resistive or capacitive?
A: This specific 3.97-inch E-Ink module utilizes a capacitive touch interface for responsive interaction.
Q: Does this board support MicroPython?
A: Yes, the ESP32-S3 chip fully supports MicroPython, CircuitPython, and the Arduino IDE.
Q: Can I connect a external battery directly?
A: Yes, there is a dedicated 2-pin JST connector for Li-Po batteries. Please ensure the voltage is within the 3.7V-4.2V range.
Q: What voice commands are pre-installed?
A: The board comes with firmware examples for wake-word detection and basic command recognition. You can train custom models using the ESP-SR framework.
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