Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ESP32-C3 (RISC-V 32-bit) |
| Display Type | 0.42-inch OLED |
| Connectivity | Wi-Fi 802.11 b/g/n, Bluetooth 5 (LE) |
| Antenna | On-board Ceramic Antenna |
| Flash Memory | 4 MB |
| Operating Voltage | 3.3V |
| Interface | USB Type-C |
| GPIO Pins | 22 Programmable GPIOs |
| Dimensions | 56mm x 24mm x 12mm |
| Compatibility | Arduino IDE, ESP-IDF, MicroPython |
Anonymous
Mar 30, 2026
Rating: 5/5
Excellent value for money
I bought three of these for a sensor network project. The USB-C port makes power delivery easy, and the Bluetooth LE range is surprisingly good for such a small form factor.
Anonymous
Mar 28, 2026
Rating: 4/5
Great board, minor documentation gaps
Hardware quality is excellent and the RISC-V core is fast. Had to dig into the ESP-IDF docs to find specific pin mappings for the OLED, but once configured, it works flawlessly.
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect for compact IoT projects
The integrated OLED screen is a game changer for debugging without needing a serial monitor. The ceramic antenna provides stable Wi-Fi connection in my smart home setup.
Anonymous
Mar 21, 2026
Rating: 5/5
Beginner friendly
As someone new to ESP32, this board was easy to set up with the Arduino IDE. The small screen helps visualize data immediately which is great for learning.
Anonymous
Mar 17, 2026
Rating: 5/5
Reliable for prototyping
We used these in our university lab for student projects. They are robust, the ceramic antenna holds up well, and the price point allows us to buy in bulk.
Anonymous
Mar 07, 2026
Rating: 4/5
Solid performance
Runs MicroPython smoothly. The only reason for 4 stars is that the OLED brightness could be slightly higher for outdoor use, but indoors it is perfectly clear.
Q: What is the resolution of the 0.42-inch OLED screen?
A: The OLED display has a resolution of 72x40 pixels, which is sufficient for displaying status icons, small text, and basic sensor readings.
Q: Is this compatible with the original ESP32 libraries?
A: Most libraries are compatible, but since the C3 uses a RISC-V architecture instead of Xtensa, some low-level peripheral code may need adjustment. Arduino IDE handles most of this automatically.
Q: Can I power this board via the VIN pin?
A: Yes, you can supply 5V via the VIN pin, but we recommend using the USB-C port for stable power during development and flashing.
Q: Does it come with a protective case?
A: No, the package includes only the development board. Protective cases are sold separately or can be 3D printed using available STL files online.
Q: Does this board support external antennas?
A: No, this specific model features an on-board ceramic antenna only and does not have a connector for an external antenna.
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