FireBeetle 2 ESP32-E (N16R2) IoT Board (Dual-Core 240MHz, WiFi/Bluetooth, LVGL Support)

The FireBeetle 2 ESP32-E is an IoT development board based on the ESP32-WROOM-32E-N16R2 module. It features a 240MHz dual-core processor, 16MB Flash, and 2MB PSRAM. The board supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 BR/EDR & BLE. It operates on 5V DC via USB-C or a 3.7V Li-ion battery, featuring automatic power switching and charging. Peripherals include 17 digital pins, 11 analog pins, 3x UART, 1x SPI, 1x I2C, and an onboard GDI for display connections. It is programmable with Arduino IDE, ESP-IDF, and MicroPython. The module measures 25.4mm x 60mm and utilizes an onboard PCB antenna for robust connectivity.

Abundant peripheral interfaces

Including 17 digital pins, 11 analog pins, 3 UART interfaces, 1 SPI interface, 1 I2C interface, 1 I2S interface, and 2 DAC interfaces, it can meet various hardware connection needs.

Board Overview of FireBeetle 2 ESP32-E (N16R2) Development Board

Dual power supply modes

Supporting both USB and external 3.7V lithium battery power supply, it can automatically switch between power sources under dual power supply, and supports both USB and external DC charging modes.

Support for multiple programming methods

Including Arduino IDE, ESP-IDF, Micro-Python, etc., catering to different developers' programming habits.

Compact design, convenient for embedding

With a size of only 25.4mm × 60mm, onboard WiFi and Bluetooth antennas, and using stamp hole design, it is convenient to embed or integrate into PCB prototypes.

The difference between ESP32-WROOM-32E and ESP32-WROOM-32UE

The ESP32-WROOM-32E (this product) uses an onboard PCB antenna. This type of antenna is realized through PCB technology, does not require separate antenna assembly, is not easily damaged by touch, and is convenient for whole machine assembly. Onboard antennas can save space, reduce costs, and because they can be carefully positioned on the board, they can provide signal integrity. However, their gain may be lower than that of external antennas.

The ESP32-WROOM-32UE, on the other hand, connects to an external antenna via a connector. External antennas can be installed on the outside of the device and include both omnidirectional and directional antenna types. The main advantage of external antennas is that they can provide higher gain, thereby enhancing the communication range of Bluetooth or WiFi.

Furthermore, this product is one of the low-power IoT development boards in the FireBeetle series. If it does not meet your requirements, you can refer to the FireBeetle Series Selection Guide to choose a more suitable model.