ESP32-WROOM-32 WiFi Bluetooth Module w/ 16M16M 128Mbit Flash
ESP32-WROOM-32 WiFi Bluetooth Module w/ 16M16M 128Mbit Flash - Image 2
SKU: IOWC-1873
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ESP32-WROOM-32 WiFi Bluetooth Module w/ 16M16M 128Mbit Flash

₹379.00 (Inclusive of all taxes)
Out of Stock

The ESP32-WROOM-32 is a powerful dual-core Wi-Fi and Bluetooth 4.2 (BR/EDR/BLE) MCU module with 16MB of flash memory, designed for low-power IoT applications. It supports Arduino IDE, ESP-IDF, and MicroPython for rapid development.

Features

  • Dual-core ESP32-D0WD SoC with Xtensa LX6 processors, clockable from 80MHz to 240MHz.
  • Integrated 802.11 b/g/n Wi-Fi (up to 150 Mbps) and Bluetooth v4.2 Classic & BLE connectivity.
  • Onboard 16MB (128Mbit) SPI flash memory for storing application code and data.
  • Comprehensive peripheral set includes UART, SPI, I2C, I2S, SDIO, PWM, and a Hall effect sensor.
  • Optimized for low power consumption with dynamic frequency scaling and multiple sleep modes.

Out of stock

Description

The ESP32-WROOM-32 module integrates Espressif’s ESP32-D0WD chip, a highly integrated solution for Wi-Fi and Bluetooth applications requiring minimal external components. It incorporates the RF balun, power amplifier, low-noise amplifier, filters, and power management modules directly on the chip, simplifying PCB design. The dual-core processor architecture allows for efficient task handling, making it suitable for demanding applications like voice encoding or music streaming while maintaining low power operation for sensor networks.

This module is engineered for robust RF performance and reliability across a wide temperature range. It features an onboard PCB antenna for standard use, with a variant (ESP32-WROOM-32U) offering a U.FL connector for an external antenna to extend range. Its rich set of interfaces and advanced power management technologies enable versatile integration into smart home devices, industrial automation, and portable consumer electronics.

Key Features

  • Dual-core Xtensa LX6 microprocessor with adjustable clock frequency (80-240 MHz).
  • Integrated Wi-Fi 802.11 b/g/n and dual-mode Bluetooth 4.2 for comprehensive wireless connectivity.
  • Onboard PCB antenna provides reliable 2.4GHz signal coverage for most applications.
  • Extensive GPIO and peripheral support for sensors, displays, motors, and storage interfaces.
  • Advanced power management with fine-resolution clock gating and dynamic power scaling.
  • Built-in Hall effect sensor for magnetic field detection applications.
  • Designed for high integration with less than 10 external components required.
  • Wide operating voltage range (2.7V to 3.6V) compatible with various power sources.

Applications

  • Smart home automation hubs and connected devices.
  • Industrial sensor nodes and wireless telemetry systems (IIoT).
  • Wearable electronics and fitness trackers with BLE connectivity.
  • Voice-controlled assistants and audio streaming devices.
  • Prototyping and educational platforms for IoT development.

Technical Specifications

Microcontroller/SoCESP32-D0WD (Dual-core Xtensa LX6)
Wireless Protocols802.11 b/g/n Wi-Fi, Bluetooth v4.2 BR/EDR & BLE
Flash Memory16 MB (128 Mbit)
Supply Voltage2.7V to 3.6V
Operating Current~80 mA (average)
InterfacesUART, SPI, I2C, I2S, SDIO, PWM, GPIO
On-chip SensorHall Effect Sensor
AntennaIntegrated PCB Antenna
Operating Temperature-40°C to 85°C
DimensionsApprox. 6 x 5 x 3 cm

Frequently Asked Questions

What is the difference between ESP32-WROOM-32 and ESP32-WROOM-32U?

The ESP32-WROOM-32 features an integrated PCB antenna soldered directly to the module, providing a compact and cost-effective solution. The ESP32-WROOM-32U variant omits this PCB antenna and instead includes a U.FL (IPEX) connector, allowing you to attach an external antenna via a pigtail cable. This external antenna option is crucial for applications requiring extended wireless range, improved signal directionality, or when the module is mounted inside a metal enclosure that would block the onboard antenna's signal.

How do I program the ESP32-WROOM-32 module?

You can program the ESP32-WROOM-32 using popular development frameworks like the Arduino IDE with the ESP32 board package, Espressif's official ESP-IDF for full low-level control, or MicroPython for scripting. Connect the module's UART pins (TX, RX, EN, and GND) to a USB-to-serial adapter (like an FTDI or CP2102). Put the module into bootloader mode by pulling GPIO0 low during reset, then upload your compiled firmware through the serial port. Ensure you provide a stable 3.3V power supply during programming and operation.

What is the power consumption of the ESP32-WROOM-32 in sleep mode?

The ESP32-WROOM-32 supports several deep sleep modes for ultra-low-power operation. In Deep Sleep mode, only the RTC controller and RTC memory remain powered, reducing current consumption to approximately 10 µA. In Light Sleep mode, the CPU is paused but the RAM is retained, consuming around 0.8 mA. Actual sleep current depends on enabled peripherals and wake-up sources. For battery-powered projects, utilize these sleep modes and wake the chip via timer, external GPIO interrupt, or sensor touchpad to maximize operational life.

Package Includes

  • 1 x ESP32-WROOM-32 WiFi Bluetooth Module

Additional Information

Weight 0.02 kg
Dimensions 6 × 5 × 3 cm

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