ESP32-WROOM-32U Wi-Fi + Bluetooth IoT Development Board
SKU: IOWC-1390
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ESP32-WROOM-32U Wi-Fi + Bluetooth IoT Development Board

₹469.00 (Inclusive of all taxes)
Out of Stock

The ESP32-WROOM-32U is a compact, feature-rich development board built around the powerful ESP32 dual-core SoC, offering integrated Wi-Fi and Bluetooth/BLE connectivity. It is fully programmable via Arduino IDE, ESP-IDF, or MicroPython, making it ideal for rapid IoT prototyping and embedded applications.

Features

  • Powered by the ESP32 dual-core Xtensa LX6 processor running at 240 MHz for robust IoT application performance.
  • Integrated 2.4 GHz Wi-Fi 802.11 b/g/n and dual-mode Bluetooth (Classic & BLE 4.2) for versatile wireless connectivity.
  • Features an external U.FL/IPEX antenna connector for improved signal range and flexibility over PCB trace antennas.
  • Rich peripheral set with GPIO, SPI, I2C, UART, ADC, and DAC interfaces for extensive sensor and actuator integration.
  • Low-power operating modes and a compact form factor suitable for battery-powered, space-constrained IoT deployments.

Out of stock

Description

The ESP32-WROOM-32U development module is a core component in the Espressif ecosystem, designed for engineers and makers building connected devices. It integrates the full ESP32 chipset, including 520KB SRAM and 448KB ROM, onto a board-ready module with a U.FL connector for an external antenna, distinguishing it from the PCB antenna variant (WROOM-32D). This design allows for optimized RF performance in final product enclosures.

As a standalone microcontroller unit (MCU), it can run your entire application, or it can operate as a co-processor handling wireless communication via SPI, SDIO, I2C, or UART interfaces to a host system. Its power architecture supports a wide 3.0V to 3.6V operating range with deep sleep currents in the microamp range, enabling long-term deployments in smart home, industrial sensor, and wearable health monitoring scenarios.

Key Features

  • Dual-core 32-bit LX6 microprocessor delivers high computational power for complex tasks like MP3 decoding or TLS network security.
  • Integrated Wi-Fi supports station, soft-AP, and station+soft-AP coexistence modes for flexible network topologies.
  • Dual-mode Bluetooth enables both classic Bluetooth connectivity for audio and BLE for low-energy sensor data broadcasting.
  • External U.FL antenna port allows for the attachment of higher-gain or directional antennas to extend wireless range.
  • Comprehensive development support via Arduino Core for ESP32, Espressif's official ESP-IDF, and MicroPython for rapid scripting.
  • Extensive I/O capabilities including touch sensors, Hall effect sensor, and multiple ADC channels for direct sensor interfacing.
  • Robust operating temperature range from -40°C to 85°C ensures reliability in harsh environmental conditions.

Applications

  • Smart home automation hubs, switches, and sensor nodes.
  • Industrial IoT (IIoT) telemetry and programmable logic controller (PLC) communication gateways.
  • Wearable health monitors and smart medical devices with wireless data logging.
  • HVAC control systems, smart thermostats, and energy management sensors.
  • Prototyping for connected security devices like smart locks and surveillance camera triggers.
  • Voice-enabled assistants and music streaming devices leveraging the chip's processing power.

Technical Specifications

Microcontroller / SoCESP32 (Xtensa dual-core 32-bit LX6)
Wireless ProtocolsWi-Fi 802.11 b/g/n, Bluetooth 4.2 BR/EDR & BLE
CPU Frequency240 MHz (adjustable)
SRAM520 KB
ROM448 KB
Supply Voltage3.3V (3.0V - 3.6V typical)
Operating Current~500 mA (peak during RF transmission)
InterfacesGPIO, SPI, I2C, UART, I2S, ADC, DAC, Touch, PWM
Antenna ConnectorU.FL (IPEX) for external antenna
Operating Temperature-40°C to +85°C
Dimensions (approx.)18mm x 25.5mm x 3.1mm (module)

Frequently Asked Questions

How do I program the ESP32-WROOM-32U using the Arduino IDE?

First, install the ESP32 board support package via the Arduino IDE Board Manager. Select 'ESP32 Dev Module' as your target. Connect the board via a USB-to-serial adapter, ensuring you've connected the UART TX/RX pins correctly. The default upload baud rate is 921600. You can then write and upload sketches that utilize the built-in Wi-Fi and Bluetooth libraries. Remember to configure the external antenna option in your code if you're using a U.FL-connected antenna instead of the default internal trace.

What is the advantage of the U.FL connector on the WROOM-32U model?

The U.FL (IPEX) connector allows you to attach an external antenna, which provides significant advantages over a fixed PCB trace antenna. You can use a higher-gain antenna to extend wireless range, use a directional antenna for focused coverage, or position the antenna outside a metal enclosure that would otherwise block signals. This is crucial for final product deployment where optimal RF performance and physical placement are required, unlike the WROOM-32D variant which has a fixed onboard antenna.

What are the power requirements and sleep current for battery-operated projects?

The module operates from a 3.3V supply, with a typical range of 3.0V to 3.6V. Peak current can reach 500mA during Wi-Fi transmission. For battery efficiency, utilize the ESP32's deep sleep modes. In deep sleep with the RTC memory preserved, current consumption drops to approximately 10µA. You can wake the device using a timer, external wake-up pins, or touch sensor interrupts. Proper power management in firmware is essential to achieve multi-month operation on a single LiPo or AA battery pack.

Package Includes

  • 1 x ESP32-WROOM-32U IoT Development Board Module

Additional Information

Weight 0.01 kg
Dimensions 8 × 5 × 2 cm

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