Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ESP32-E |
| Header Type | Pre-soldered Female Headers |
| Wireless Connectivity | Wi-Fi 802.11 b/g/n, Bluetooth 4.2 BR/EDR and BLE |
| Operating Voltage | 3.3V |
| Input Voltage | 5V via USB or VIN pin |
| Flash Memory | 4MB |
| SRAM | 520KB |
| Digital I/O Pins | 21 (including SPI, I2C, UART) |
| Analog Input Pins | 1 (12-bit ADC) |
| Dimensions | 56mm x 26mm x 12mm |
Anonymous
Mar 29, 2026
Rating: 5/5
Love the female headers
Finally, a board that comes ready to use right out of the box. No more bent pins from bad soldering jobs. The performance is identical to the standard version but much more convenient.
Anonymous
Mar 21, 2026
Rating: 5/5
Great build quality
DFRobot never disappoints. The board feels sturdy, and the pin labeling is clear and easy to read. Wi-Fi connection is stable, and the Bluetooth range is better than expected for such a compact board.
Anonymous
Mar 19, 2026
Rating: 5/5
Perfect for quick prototyping
The pre-soldered female headers are a huge time saver. I can plug in jumper wires immediately without needing to break out the soldering iron. The ESP32-E chip performs flawlessly for my IoT sensor projects.
Anonymous
Mar 10, 2026
Rating: 5/5
Reliable and compact
I've used this in three different home automation projects now. It handles multiple connections without crashing. The form factor fits perfectly into small enclosures.
Anonymous
Mar 03, 2026
Rating: 4/5
Good value for money
Works great for my university robotics project. The power consumption is low enough for battery-operated tasks. Shipping was fast, and the packaging protected the components well.
Anonymous
Mar 02, 2026
Rating: 4/5
Solid choice for beginners
Very easy to set up with the Arduino IDE. The only reason I didn't give 5 stars is that the documentation could include a few more example projects specific to the E variant, but overall it's excellent.
Q: How many GPIO pins are available for user interaction?
A: There are 21 usable GPIO pins available on the female headers. Please refer to the pinout diagram in our wiki for details on which pins support specific functions like ADC, DAC, or capacitive touch.
Q: Is this board compatible with the standard Arduino IDE?
A: Yes, the FireBeetle 2 ESP32-E is fully compatible with the Arduino IDE. You just need to install the ESP32 board manager package.
Q: What is the difference between the ESP32-E and the standard ESP32?
A: The ESP32-E variant typically offers improved RF performance and slightly lower power consumption in deep sleep modes compared to the original ESP32, making it ideal for battery-powered IoT applications.
Q: Can I power this board directly with a 3.7V LiPo battery?
A: While the board operates at 3.3V, we recommend using the VIN pin which accepts 5V input, or using a dedicated LiPo backpack accessory designed for this series to manage charging and voltage regulation safely.
Q: Does this come with a USB cable?
A: No, the development board is sold separately. You will need a standard Micro-USB or USB-C cable (depending on the specific revision batch) to program and power the board.
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