Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ESP32-C3 (RISC-V 32-bit) |
| Flash Memory | 4 MB |
| PSRAM | 2 MB |
| Wireless Connectivity | Wi-Fi 2.4 GHz, Bluetooth 5 (LE) |
| Display Interface | SPI optimized for E-Ink panels |
| Operating Voltage | 3.3V |
| Input Voltage | 5V via USB-C or VIN pin |
| GPIO Pins | 22 programmable pins |
| Dimensions | 54mm x 28mm x 12mm |
| Programming Support | Arduino IDE, ESP-IDF, MicroPython |
Anonymous
Mar 30, 2026
Rating: 5/5
Easy to get started
As someone new to ESP32, I found the Arduino library support very robust. The example codes for driving the display were easy to modify. No driver installation issues on Windows 11.
Anonymous
Mar 27, 2026
Rating: 5/5
Best board for this price point
I've tried several development boards for e-paper projects, and this one offers the best balance of cost and performance. The 2MB PSRAM helps significantly when handling larger image buffers for the display.
Anonymous
Mar 22, 2026
Rating: 4/5
Solid performance, gets warm
Does exactly what it says on the tin. The Wi-Fi connection is stable. It does get slightly warm during long compilation uploads or heavy Wi-Fi transmission, but nothing concerning for normal operation.
Anonymous
Mar 21, 2026
Rating: 4/5
Great value, minor documentation gaps
The hardware is solid and the RISC-V architecture is fast. I had to dig a bit to find the specific pinout mapping for the E-Ink CS line, but once configured, it runs stable. Good battery life in deep sleep mode.
Anonymous
Mar 20, 2026
Rating: 5/5
Low power consumption winner
I am building a remote sensor node, and the power draw on this C3 chip is impressive. Combined with an E-Ink screen that only updates when necessary, my battery lasts for weeks. USB-C charging is a nice bonus.
Anonymous
Mar 14, 2026
Rating: 5/5
Perfect for E-Paper Projects
This board works flawlessly with my 2.9-inch E-Ink display. The SPI speed is excellent, and the refresh rates are much smoother than on my old ESP8266 setup. Highly recommended for weather stations.
Q: Does it support Over-The-Air (OTA) updates?
A: Absolutely. The ESP32-C3 fully supports OTA updates via Wi-Fi using both the Arduino framework and ESP-IDF, making it easy to deploy firmware fixes remotely.
Q: Can I power this directly from a 3.7V LiPo battery?
A: Yes, you can connect a 3.7V LiPo battery to the BAT pin if the board has a built-in charging circuit, or via the 5V VIN pin which regulates down to 3.3V. Please check the specific schematic for the charging IC limitations.
Q: Does this board come with headers pre-soldered?
A: No, the board is shipped without headers to allow for flexible mounting options. You will need to solder your own male or female headers depending on your project needs.
Q: What is the maximum resolution supported for E-Ink displays?
A: The resolution limit depends more on the available RAM and the display controller than the ESP32-C3 itself. With 2MB PSRAM, it comfortably handles common sizes up to 800x480 pixels, though refresh times may vary.
Q: Is this compatible with the Waveshare 4.2 inch E-Ink HAT?
A: Yes, it is compatible. You will need to connect the SPI pins (MOSI, MISO, SCK, CS, DC, RST, BUSY) manually via jumper wires as the form factor differs from standard Raspberry Pi HATs.
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