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DFRobot Beetle ESP32 Microcontroller - 35x34mm IoT Board w/ WiFi & Bluetooth

₹879.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Beetle ESP32 is a compact 35x34mm IoT microcontroller board featuring a dual-core Tensilica LX6 processor, integrated WiFi and Bluetooth 4.2, and a suite of 4 analog and 4 digital I/O ports, designed for streamlined integration into embedded systems, wearables, and portable sensor nodes.

Features

  • Ultra-compact footprint measuring just 35mm x 34mm (1.38″ x 1.34″) for space-constrained projects.
  • Powered by a dual-core ESP32 processor with 520KB SRAM and 16Mbit flash, operating at up to 240MHz.
  • Integrated 2.4GHz WiFi (802.11 b/g/n) and Bluetooth 4.2 (BR/EDR/BLE) for wireless connectivity.
  • Features 4 analog inputs (A0-A3), 4 digital I/O ports (D2, D3, D4, D7), plus UART and I2C interfaces.
  • Onboard Micro USB for direct programming and power, with a secondary VIN range of 3.5V to 6.5V DC.

Out of stock

Description

The Beetle ESP32 Microcontroller from DFRobot is a miniaturized, feature-rich development board built around the Espressif ESP32 system-on-chip. It provides a complete wireless IoT solution in a footprint significantly smaller than standard ESP32 dev boards, making it ideal for embedding into final products, wearables, or compact sensor modules. The board includes gold-plated, honeycomb-style power and I/O connectors designed for screw-terminal wiring or conductive thread sewing, facilitating rapid prototyping without soldering.

It supports a wide input voltage range, allowing flexible power sourcing from a USB port (5V) or an external DC supply (3.5-6.5V). The integrated wireless stack supports common WiFi protocols and Bluetooth Low Energy, enabling local network communication and device pairing. With its direct program upload via Micro USB and comprehensive peripheral set, the Beetle ESP32 serves as a high-performance, low-profile core for building connected sensor systems and interactive electronic projects.

Key Features

  • Miniaturized Form Factor: Optimized 35mm x 34mm PCB layout provides full ESP32 functionality in a drastically reduced space.
  • Dual-Core Processing Power: Leverages the ESP32's dual-core Tensilica LX6 CPU for efficient multitasking and complex sensor data processing.
  • Comprehensive Wireless Suite: Combines 2.4GHz WiFi (802.11 b/g/n) and Bluetooth 4.2 with BLE support for versatile communication protocols.
  • Prototype-Friendly I/O: Gold-plated screw terminals and large pads on 4 analog and 4 digital ports enable solder-free connections for wires or conductive thread.
  • Flexible Power Architecture: Accepts 5V via Micro USB or 3.5V to 6.5V DC through the VIN pin, accommodating battery or regulated supply inputs.
  • Direct USB Programming: Onboard USB-to-serial chip allows for immediate code upload and serial debugging without an external programmer.
  • Stable Clocking: Equipped with a 40MHz main crystal and a 32.768kHz RTC crystal for accurate timing and low-power sleep modes.
  • High-Value Build: Durable construction with plated through-holes and a robust PCB designed for repeated prototyping and integration.

Applications

  • Compact IoT sensor nodes for environmental monitoring (temperature, humidity, air quality) with wireless data transmission.
  • Wearable electronics and smart textile projects utilizing the solder-free, sewable gold-plated connectors.
  • Portable data loggers and handheld instruments requiring a small form factor, processing power, and connectivity.
  • Wireless control modules for robotics, drones, or home automation systems acting as a central communication hub.
  • Prototyping and educational platforms for embedded systems design focusing on ESP32-based wireless applications.

Technical Specifications

ProcessorTensilica LX6 dual-core
Operating FrequencyUp to 240 MHz
SRAM520 KB
Flash Memory16 Mbit
WirelessWiFi 802.11 b/g/n & Bluetooth 4.2 BR/EDR/BLE
WiFi Frequency Range2.4 ~ 2.5 GHz
Digital I/O Ports4 (D2, D3, D4, D7)
Analog Input Ports4 (A0, A1, A2, A3)
Communication Interfaces1x UART, 1x I2C
USB Supply Voltage5.0 V
VIN Supply Voltage RangeDC 3.5 - 6.5 V
On-chip Clock40 MHz crystal, 32.768 kHz crystal
Board Dimensions35 mm (L) x 34 mm (W)

Frequently Asked Questions

What is the input voltage range for the Beetle ESP32?

The board can be powered in two ways: via the Micro USB port at 5V, or through the VIN pin with an external DC supply voltage ranging from 3.5V to 6.5V. This flexibility allows for use with USB power banks, regulated wall adapters, or LiPo batteries within that voltage range.

How many analog and digital pins are available?

The Beetle ESP32 provides 4 dedicated analog input pins (labeled A0, A1, A2, A3) and 4 digital I/O pins (D2, D3, D4, D7). These pins are accessible via gold-plated, screw-terminal compatible connectors, facilitating easy wiring without soldering.

Does this board support Bluetooth Low Energy (BLE)?

Yes, the integrated ESP32 chip supports Bluetooth 4.2 protocol, which includes Bluetooth Low Energy (BLE), as well as Classic Bluetooth (BR/EDR). This enables both low-power beacon applications and standard serial data profiles.

Can I program the Beetle ESP32 using the Arduino IDE?

Yes, the board is fully compatible with the Arduino IDE using the ESP32 core. You can connect it via the onboard Micro USB cable, select the appropriate ESP32 board variant in the IDE, and upload sketches directly for programming and serial communication.

What are the physical dimensions of the board?

The Beetle ESP32 measures 35mm in length and 34mm in width (approximately 1.38" x 1.34"), making it one of the smallest full-featured ESP32 development boards available. Its compact size is ideal for embedding into final products or space-constrained enclosures.

Package Includes

  • 1 x DFRobot Beetle ESP32 Microcontroller Board

Additional Information

Weight 0.015 kg
Dimensions 3.5 × 3.4 cm