Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Processor | Dual-Core Xtensa LX7 |
| Clock Speed | 240 MHz |
| Flash Memory | 4 MB |
| PSRAM | 2 MB |
| Wireless Connectivity | Wi-Fi 802.11b/g/n and Bluetooth 5 (LE) |
| GPIO Pins | 21 Programmable GPIOs |
| Interface | USB Type-C for Power and Data |
| Operating Voltage | 3.3V Logic, 5V Input via USB |
| Dimensions | 20mm x 17.5mm x 3mm |
| Compatibility | Arduino IDE, ESP-IDF, MicroPython |
Anonymous
Mar 20, 2026
Rating: 4/5
Solid upgrade from ESP8266
Much faster and more stable than my old ESP8266 projects. The extra RAM makes a huge difference when handling JSON payloads. Only giving 4 stars because it runs a bit warm under heavy load.
Anonymous
Mar 19, 2026
Rating: 4/5
Great hardware, minor pin labeling issue
The performance is excellent and Bluetooth LE works flawlessly. I wish the pinout diagram on the back was slightly larger, but otherwise a solid board.
Anonymous
Mar 18, 2026
Rating: 5/5
Easy to set up with Arduino
Installed the board manager in minutes and uploaded my first sketch immediately. The USB-C connection is very convenient compared to older micro-USB boards.
Anonymous
Mar 16, 2026
Rating: 5/5
Ideal for home automation sensors
Low power consumption in deep sleep mode is impressive. I'm using these for battery-powered door sensors and they last weeks. The form factor fits easily into small enclosures.
Anonymous
Mar 11, 2026
Rating: 5/5
Perfect for compact IoT projects
This board is incredibly small yet powerful. The dual-core processor handles Wi-Fi and sensor data simultaneously without lag. Great value for the price.
Anonymous
Mar 07, 2026
Rating: 5/5
Bought 10 for our student workshop
All boards worked out of the box. The built-in antenna performs well enough for our indoor robotics applications. Highly recommended for education.
Q: Does this board support external antennas?
A: No, this specific mini module features an integrated PCB antenna only and does not have a connector for an external antenna.
Q: Can I power this directly from a 3.7V LiPo battery?
A: Yes, you can connect a 3.7V LiPo battery to the 5V and GND pins, as the board includes a voltage regulator. However, for direct 3.3V injection, please refer to the schematic to avoid damage.
Q: Is the CH343 driver required for Windows?
A: Yes, most Windows systems will require the CH343 or CP210x USB-to-UART driver to recognize the board for serial communication and flashing.
Q: Does it come with headers pre-soldered?
A: No, this module is sold without headers to keep the profile low. You will need to solder your own pin headers if you plan to use it on a breadboard.
Q: What is the maximum current draw for the GPIO pins?
A: Each GPIO pin can source or sink up to 40mA. The total current drawn from all IO ports should not exceed specific limits outlined in the ESP32-S3 datasheet to prevent instability.
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