Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ESP32-E (Dual-core Tensilica LX6) |
| Wireless Connectivity | Wi-Fi 802.11 b/g/n and Bluetooth v4.2 BR/EDR & BLE |
| Operating Voltage | 3.3V |
| Input Voltage | 5V via USB or VIN pin |
| Flash Memory | 4MB |
| SRAM | 520KB |
| Digital I/O Pins | 21 (including PWM, I2C, SPI, UART) |
| Analog Input Pins | 12 (12-bit ADC) |
| Board Dimensions | 59mm x 24mm |
| Compatibility | Arduino IDE, MicroPython, ESP-IDF |
Anonymous
Mar 24, 2026
Rating: 5/5
Low power champion
Battery life on this thing is amazing. I'm running it off a small LiPo battery with a solar panel, and it lasts weeks. The deep sleep current draw is exactly as specified in the datasheet.
Anonymous
Mar 20, 2026
Rating: 5/5
Perfect for IoT Prototyping
This board is incredibly compact yet powerful. The built-in Wi-Fi and Bluetooth work flawlessly right out of the box. I used it for a home automation sensor node, and the power consumption is impressively low in deep sleep mode.
Anonymous
Mar 19, 2026
Rating: 5/5
Easy to get started
As someone new to ESP32, this board made the learning curve much smoother. The community support is huge, and finding libraries for sensors was effortless. Highly recommend for students.
Anonymous
Mar 17, 2026
Rating: 4/5
Solid performance for the price
We use these for rapid prototyping before moving to custom PCBs. The stability is good for development purposes. The USB-C connector is a nice modern touch compared to older micro-USB boards.
Anonymous
Mar 09, 2026
Rating: 4/5
Great value, minor documentation gaps
Hardware quality is excellent and the pinout is well labeled. Setup with Arduino IDE was quick. Only giving 4 stars because some of the advanced peripheral examples in the docs could be more detailed for beginners.
Anonymous
Mar 01, 2026
Rating: 5/5
Reliable and Compact
I've deployed six of these in my garden monitoring system. They have been running for three months without a single disconnect. The form factor fits perfectly into small enclosures.
Q: Does this board support Over-The-Air (OTA) updates?
A: Yes, the FireBeetle 2 ESP32-E fully supports OTA updates via Wi-Fi using the Arduino IDE or ESP-IDF frameworks.
Q: Can I power this board directly with a 3.7V LiPo battery?
A: While the board operates at 3.3V internally, it is recommended to use the VIN pin which accepts 5V input. If connecting a LiPo directly, ensure you have an external regulator or use a dedicated battery shield to avoid damaging the board.
Q: Does this come with headers pre-soldered?
A: No, the board typically ships without headers soldered to allow for flexible mounting options. You will need to solder your own header pins or use pogo pins depending on your project needs.
Q: Is the Bluetooth Classic supported or only BLE?
A: The ESP32-E chip on this board supports both Bluetooth Classic (BR/EDR) and Bluetooth Low Energy (BLE), giving you flexibility for audio or standard data transmission projects.
Q: What is the maximum current output per GPIO pin?
A: Each GPIO pin can source or sink up to 40mA. However, the total current for all IO ports combined should not exceed specific limits outlined in the ESP32 technical reference manual to prevent overheating.
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