SKU: TH2199
DFRobot FireBeetle 2 ESP32-E IoT Microcontroller is built around the ESP-WROOM-32E and designed for low-power wireless projects. It combines a dual-core ESP32 processor, onboard Wi-Fi and Bluetooth, and a built-in Li-ion charging circuit in a maker-friendly development board format.
With a clock speed of up to 240MHz, onboard 4MB flash, and low power consumption as low as 2mA, this board is well suited for battery-powered IoT nodes, wireless sensors, smart home devices, data loggers, and portable embedded prototypes.
It also features a GDI display port for easier display connectivity, a USB-C input, and a PH2.0 lithium battery interface, making it convenient for rapid development without adding extra charging hardware.
Technical details for FireBeetle 2 ESP32-E IoT Microcontroller.
| Brand | DFRobot |
|---|---|
| Model | FireBeetle 2 ESP32-E |
| Processor | Xtensa Dual-Core 32-bit LX6 |
| Clock Speed | 240MHz |
| Memory | 520KB SRAM, 448KB ROM, 4MB Flash |
| Wireless | Wi-Fi 802.11 b/g/n and Bluetooth 4.2 BR/EDR + BLE |
| Input Voltage | USB-C: 5V DC; PH2.0: 3.7~4.2V Li-ion; VCC Pin: 5V DC |
| Interfaces | 2 × UART, 1 × SPI, 1 × I2C, 1 × I2S, 2 × DAC, 7 × Touch, 16 × LED PWM, GDI display |
| Dimensions | 25.4mm × 60mm |
| Weight | 23g |
The board provides a practical mix of digital, analog, communication, and touch-capable pins for embedded development, prototyping, and connected device design.
| Digital Pins | 18 pins: IO0, IO1, IO2, IO3, IO4, IO12, IO13, IO14, IO15, IO16, IO17, IO18, IO19, IO21, IO22, IO23, IO25, IO26 |
|---|---|
| Analog Pins | 11 pins: IO0, IO2, IO4, IO12, IO13, IO14, IO15, IO25, IO26, I34, I35 |
| Touch Interfaces | 7 |
| LED PWM Channels | 16 |
| Onboard RGB LED | WS2812 |
| Battery Support | Onboard charging circuit with PH2.0 lithium battery interface |
| Mounting Hole | 2.0mm diameter |
This ESP32 board is a strong fit for IoT gateways, wireless sensor nodes, smart switches, display-equipped embedded devices, BLE projects, and battery-powered maker builds where integrated charging and low-power operation are important.
Note: Use the specified input ranges for USB-C, VCC, and Li-ion battery connection to avoid damage to the board.
This board supports both Wi-Fi and Bluetooth. It uses IEEE 802.11 b/g/n for Wi-Fi and Bluetooth 4.2 with BR/EDR plus Bluetooth LE support.
It can be powered through the USB-C port at 5V DC, the VCC pin at 5V DC, or a 3.7V to 4.2V Li-ion battery through the onboard PH2.0 connector. The board also includes onboard LiPo battery charging.
The FireBeetle 2 ESP32-E is based on the ESP-WROOM-32E. It uses an Xtensa dual-core 32-bit LX6 processor running up to 240 MHz, with 520 KB SRAM, 448 KB ROM, and 4 MB flash memory.
It provides 18 digital pins and 11 analog pins, along with 2 UART interfaces, 1 SPI, 1 I2C, and 1 I2S. It also includes 2 DAC interfaces, 7 touch interfaces, 16 LED PWM channels, an onboard WS2812 RGB LED, and a GDI display interface.
Yes, it is specifically designed for IoT and features ultra-low power consumption. The supplier brief states power consumption can be as low as 2mA.
The module size is 25.4 mm × 60 mm. It also has 2.0 mm diameter mounting holes and a listed weight of 23 g.
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