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Front of FireBeetle 2 ESP32-E development board showing USB and microSD card slot.-DFRobot product sku:DFR0654 image.
Dimension of FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)
Back of FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)
Shipping List of FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)
Detail of FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)
Detail of FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)

FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)

$8.90
SKU: DFR0654
Volume Discount
  • $8.60 3+ items
  • $8.50 5+ items
  • $8.30 10+ items
An ESP32-WROOM-32E development board with 4MB Flash, 2.4GHz Wi-Fi, Bluetooth Classic and BLE. Onboard lithium battery charging and a GDI display interface support connected sensor and display prototypes. Arduino examples and a MicroPython firmware guide are available.
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    Details
IntroductionFeaturesSpecificationShipping List Documents Certifications Resource FAQ Review

Introduction

FireBeetle 2 ESP32-E is an IoT development board based on the ESP32-WROOM-32E module. It combines a dual-core processor with 2.4GHz Wi-Fi, Bluetooth Classic and Bluetooth LE for connected sensor, control and display projects.

An onboard charging circuit and PH2.0 lithium battery connector support battery-powered prototypes. The GDI interface provides a connection for compatible DFRobot displays, while the castellated edge pads support integration into a custom PCB.

Arduino tutorials cover GPIO, serial communication, I2C, SPI, displays, wireless connectivity and deep sleep. MicroPython firmware selection and installation are covered in a separate guide.


Programming Options：

  • Arduino: Arduino setup instructions and board examples are available.
  • MicroPython:  It is listed in the firmware support guide. Follow the guide to select and flash the appropriate firmware.


    • Compatibility Note: FireBeetle 2 ESP32-E is not pin- or mechanically compatible with the original FireBeetle series, and their expansion boards are not interchangeable. Check the pinout, board dimensions and peripheral requirements before replacing a board in an existing design.


    Need Thread or Matter development? Explore FireBeetle 2 ESP32-C6 →

    FireBeetle 2 Board ESP32-E Board Overview (Arduino Compatible)

    Figure 1. Board Overview


    FireBeetle 2 Board ESP32-E IoT Microcontroller Pinout

    Figure 2. Pinout

    Features

  • ESP32-WROOM-32E dual-core processor, up to 240MHz, with 4MB Flash
  • 2.4GHz Wi-Fi and Bluetooth 4.2 BR/EDR + BLE
  • Onboard lithium battery charging circuit and PH2.0 battery connector
  • GDI interface for compatible DFRobot displays
  • Castellated edge pads for custom PCB integration
  • Arduino examples and MicroPython firmware guidance
  • Deep-Sleep Development: A documented Arduino example demonstrates deep sleep and wake-up configuration. Board current depends on the power source, firmware, connected peripherals and low-power jumper configuration.

    • Specification

    Power Parameters - Input Voltage

  • USB-C Port: 5V DC
  • PH2.0 Connector: 3.7~4.2V Li-ion
  • VCC Pin: 5V DC

    • MCU Parameters

  • Processor: Xtensa Dual-Core 32-bit LX6 Microprocessor
  • Clock Speed: 240 MHz
  • SRAM: 520 KB
  • ROM: 448 KB
  • Flash Memory: 4 MB (32 Mbit)

    • Wireless Parameters—Wi-Fi Protocol:

  • IEEE 802.11 b/g/n (Data rate up to 150 Mbps in 802.11n mode)
  • Supports A-MPDU and A-MSDU aggregation
  • Supports 0.4 μs guard interval
  • Operating Channel Center Frequency Range: 2412~2484 MHz

    • Wireless Parameters—Bluetooth Protocol:

  • Bluetooth V4.2 BR/EDR and Bluetooth LE standards
  • Bluetooth CVSD and SBC audio
  • Bluetooth Frequency Range: 2402~2480 MHz

    • Peripheral Parameters

  • Digital Pins × 18: IO0, IO1, IO2, IO3, IO4, IO12, IO13, IO14, IO15, IO16, IO17, IO18, IO19, IO21, IO22, IO23, IO25, IO26
  • Analog Pins × 11: IO0, IO2, IO4, IO12, IO13, IO14, IO15, IO25, IO26, I34, I35
  • UART Interfaces: × 2
  • SPI Interface: × 1
  • I2C Interface: × 1
  • I2S Interface: × 1
  • DAC Interfaces: × 2
  • Touch Interfaces: × 7
  • LED PWM Channels: × 16
  • RGB_LED: WS2812
  • Display Interface: GDI

    • Other Parameters

  • Module Size: 25.4mm × 60mm
  • Mounting hole size: hole diameter 2.0mm
  • Weight: 23g

    • Shipping List

  • FireBeetle 2 Board ESP32-E x1
  • 18pin-2.54mm Pitch Pin x1
  • 18pin-2.54mm Pitch Pin Female x1
  • 14pin-2.54mm Pitch Pin x1
  • 14pin-2.54mm Pitch Pin Female x1 

    • Documents

    Certifications

    Resource

    AllProjectsBlogTutorialCourseMedia
    Review y testeo Firebeetle Esp32-E IoT (control led RGB con webserver) de DFRobot

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    Outdoor 3D Printed Wireless IoT Weather Station

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    Aug 16, 2021
    Make a Home-made Network Clock with ESP32-E

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    Camera Bot using FireBeetle ESP32-S3

    Projects Camera Bot using FireBeetle ESP32-S3

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    Jun 02, 2023
    mmWave Radar Alarm with Telegram Notifications

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    FAQ

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    Review

    Matthew.Kinney Mar 26, 2026

    Love these mCU's. The best part is the GDI interface for the displays they offer. Also the price is really good when you compare it to other companies like sparkfun. The GDI is great for prototyping so you dont have to run wires or solder anything.

    KOUBELAN RICHARD.AKPAGNI Nov 07, 2025

    Excellent IoT board for both beginners and professionals. The FireBeetle 2 ESP32-E is compact, stable, and very power-efficient. The 32 MB flash and 512 KB RAM make it ideal for complex IoT or AIoT projects. Wi-Fi and Bluetooth connectivity work flawlessly, and it integrates perfectly with Arduino IDE or PlatformIO. I used it in a smart sensor project with multiple peripherals, and it performed very reliably. Highly recommended for anyone looking for a solid ESP32 development board

    Tom.PAOLINI Jun 04, 2026

    Good delivery and good product.

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    FireBeetle 2 ESP32-E IoT Development Board (4MB Flash, Wi-Fi & Bluetooth)
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