DFRobot FireBeetle ESP32-E IoT Microcontroller with Header (Supports Wi-Fi & Bluetooth)

The DFRobot FireBeetle ESP32-E is a compact, low-power IoT microcontroller board featuring the dual-core Espressif ESP32 processor with integrated Wi-Fi 802.11 b/g/n and Bluetooth 4.2 connectivity. Professional IoT developers, embedded systems engineers, and hardware prototypers use this board to rapidly develop connected applications ranging from smart home automation to industrial sensor networks. This board solves the critical challenge of integrating wireless connectivity with minimal power consumption and form factor constraints, making it ideal for battery-powered IoT deployments where traditional development boards prove too power-hungry.

Product Overview

The FireBeetle ESP32-E operates on the Espressif ESP32 dual-core processor running at 240 MHz, delivering robust computational performance for complex IoT algorithms while maintaining exceptional energy efficiency through dynamic frequency scaling and sleep modes. The board incorporates a pre-soldered header configuration, eliminating the need for additional soldering and accelerating prototyping cycles. Its integrated 4 MB SPI flash memory provides ample storage for firmware and application data, while the 520 KB internal SRAM ensures smooth multitasking capabilities. The Wi-Fi module operates in 2.4 GHz band with maximum data rates up to 150 Mbps, and Bluetooth 4.2 support enables both classic and low-energy wireless protocols for diverse connectivity scenarios.

What distinguishes the FireBeetle ESP32-E from standard ESP32 development boards is DFRobot's optimized power management design, featuring ultra-low sleep current consumption of approximately 80 uA, making it exceptionally suitable for battery-operated applications. The board includes onboard voltage regulation supporting 3.3V to 5V input, integrated USB-to-Serial converter for seamless programming, and a comprehensive pin layout providing 34 GPIO pins with support for SPI, I2C, UART, ADC, DAC, and PWM interfaces. The pre-soldered header pins enable direct breadboard integration without additional hardware modifications, significantly reducing development time for rapid prototyping and proof-of-concept implementations.

Key Specifications

Specification	Details
Product Type	IoT Microcontroller Development Board with Wireless Connectivity
Brand	DFRobot
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Processor	Dual-core Espressif ESP32 at 240 MHz
RAM	520 KB SRAM
Flash Memory	4 MB SPI Flash
Wireless Connectivity	Wi-Fi 802.11 b/g/n (2.4 GHz, 150 Mbps) and Bluetooth 4.2
GPIO Pins	34 Digital I/O pins with multiple protocols
Power Consumption	Sleep mode: 80 uA, Active mode: varies by load
Input Voltage	3.3V to 5V with integrated voltage regulation
Interfaces	SPI, I2C, UART, ADC, DAC, PWM
Board Dimensions	Compact form factor with pre-soldered headers

Key Features

• Dual-Core Processing: 240 MHz dual-core ESP32 processor enables parallel task execution for complex IoT algorithms and real-time data processing without performance bottlenecks
• Integrated Wireless: Combined Wi-Fi and Bluetooth 4.2 support eliminates the need for external wireless modules, reducing BOM costs and PCB complexity
• Ultra-Low Power Design: 80 uA sleep mode current consumption extends battery life to months or years in IoT sensor applications, ideal for remote deployments
• Pre-Soldered Headers: Factory-soldered pin headers enable immediate breadboard integration without requiring soldering skills or additional hardware preparation
• Rich Peripheral Support: 34 GPIO pins with SPI, I2C, UART, ADC, DAC, and PWM interfaces provide extensive connectivity options for sensors, actuators, and external modules
• Integrated USB Programming: Built-in USB-to-Serial converter simplifies firmware upload and serial debugging without external programmers

Applications and Use Cases

• Smart Home IoT Devices: Deploy wireless sensor nodes for temperature, humidity, and motion detection with cloud connectivity, utilizing the board's low power consumption for wall-powered or battery-operated implementations
• Industrial Sensor Networks: Monitor equipment conditions, vibration, and environmental parameters in manufacturing facilities with reliable Wi-Fi connectivity and local Bluetooth mesh networking capabilities
• Wearable Health Devices: Integrate the FireBeetle ESP32-E into fitness trackers and health monitors leveraging Bluetooth Low Energy for extended battery life and smartphone connectivity
• Agricultural IoT Solutions: Deploy soil moisture sensors, weather stations, and livestock tracking systems across farmland with Wi-Fi gateway connectivity and minimal power draw from solar or battery sources
• Robotics and Automation: Use as the control board for autonomous robots, drones, and automated systems requiring dual-core processing, wireless communication, and extensive GPIO pin availability

How to Use

Begin by installing the ESP32 board support package in the Arduino IDE through the Boards Manager, then connect the FireBeetle ESP32-E to your computer via USB cable. The integrated USB-to-Serial converter automatically appears as a COM port, allowing immediate firmware upload without external programmers. Select the appropriate board configuration in Arduino IDE, configure Wi-Fi credentials in your sketch using the WiFi.h library, and upload your code. The pre-soldered headers enable direct connection to breadboards or custom PCBs, supporting simultaneous sensor integration through I2C or SPI interfaces while maintaining wireless connectivity.

For Bluetooth applications, utilize the BluetoothSerial.h library for classic Bluetooth or the BLE library for low-energy implementations. The board's 34 GPIO pins accommodate multiple sensors simultaneously, with dedicated ADC pins for analog sensor inputs and PWM-capable pins for motor control. Leverage the dual-core architecture by assigning CPU-intensive tasks to one core while the other handles wireless communication, ensuring responsive IoT applications. The integrated voltage regulator accepts 3.3V to 5V input, enabling flexible power supply options from USB, battery packs, or solar panels depending on your deployment scenario.

Frequently Asked Questions

What is the difference between FireBeetle ESP32-E and standard ESP32 development boards?

The FireBeetle ESP32-E features DFRobot's optimized power management design with 80 uA sleep current consumption compared to standard boards consuming 500+ uA, pre-soldered headers for immediate breadboard use, and integrated voltage regulation supporting 3.3V to 5V input. These enhancements make it specifically designed for battery-powered IoT applications where power efficiency is critical, whereas standard boards prioritize general-purpose development.

Can I use both Wi-Fi and Bluetooth simultaneously on the FireBeetle ESP32-E?

Yes, the ESP32 processor supports simultaneous Wi-Fi and Bluetooth operation through coexistence algorithms. However, they share the 2.4 GHz frequency band, so simultaneous high-bandwidth Wi-Fi and Bluetooth transfers may experience reduced performance. For optimal results, schedule Wi-Fi and Bluetooth operations sequentially or use Bluetooth Low Energy which has minimal interference impact on Wi-Fi connectivity.

How many analog sensors can I connect to the FireBeetle ESP32-E?

The board provides 12 ADC pins capable of reading analog inputs with 12-bit resolution. You can connect up to 12 analog sensors simultaneously, though actual capacity depends on your application's sampling rate and data processing requirements. For applications requiring more analog inputs, consider using external multiplexer ICs connected via SPI or I2C to expand analog channel capacity.

What programming languages are supported?

The FireBeetle ESP32-E is primarily programmed using Arduino IDE with C/C++ syntax, which is the most accessible option for beginners. Advanced users can also use MicroPython for rapid prototyping, or the native ESP-IDF framework for optimized performance and advanced features. DFRobot provides extensive Arduino libraries and example sketches specifically tailored for the FireBeetle board.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy DFRobot FireBeetle ESP32-E IoT Microcontroller with Header (Supports Wi-Fi & Bluetooth) Online in India

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