SKU: IOWC-1870
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ESP32-WROOM-32D WiFi Bluetooth Module 16M 128Mbit Flash

₹407.00 (Inclusive of all taxes)
Out of Stock

The ESP32-WROOM-32D is a feature-rich WiFi and Bluetooth 4.2 (BLE) module based on the Espressif ESP32 dual-core LX6 processor, offering 16MB of flash memory for complex IoT applications. It supports 802.11 b/g/n Wi-Fi and is programmable via Arduino IDE, ESP-IDF, or MicroPython.

Features

  • Dual-core Xtensa LX6 processor with 16MB SPI flash for ample program and data storage.
  • Integrated 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 with BLE support for dual wireless connectivity.
  • Rich peripheral set includes UART, SPI, I2C, ADC, DAC, PWM, touch sensors, and SD card interface.
  • Low operating voltage range from 2.2V to 3.6V, suitable for battery-powered IoT nodes.
  • Compact 18mm x 20mm form factor with onboard PCB antenna for easy integration into end-products.

Out of stock

Description

The ESP32-WROOM-32D is a highly integrated wireless MCU module designed for a broad spectrum of IoT applications. It features Espressif’s dual-core Xtensa LX6 microprocessor, which provides the computational power needed for tasks ranging from simple sensor data collection to more demanding operations like audio processing and secure network communications. The module’s 16MB of flash memory offers significant space for firmware, web server files, and over-the-air (OTA) update capabilities.

Its integrated 2.4GHz radio supports Wi-Fi in station, access point, and combined modes, alongside Bluetooth Classic and Low Energy (BLE) for short-range device pairing and control. The module operates from a 2.2V to 3.6V supply, enabling designs with single-cell LiPo batteries. With its extensive GPIO and peripheral support, it serves as a complete system-on-module for rapid prototyping and volume production in smart home, industrial automation, and wearable device projects.

Key Features

  • Powerful dual-core 32-bit LX6 CPU for efficient multitasking and real-time performance.
  • Comprehensive wireless connectivity with Wi-Fi 802.11 b/g/n and Bluetooth v4.2 BR/EDR & BLE.
  • Large 16MB (128Mbit) SPI flash memory for complex application code and file systems.
  • Extensive I/O and interface support including SPI, I2C, UART, ADC, DAC, capacitive touch, and PWM.
  • Integrated TCP/IP stack and support for IPv4, IPv6, SSL, MQTT, HTTP, and FTP protocols.
  • Advanced security features with WPA/WPA2 enterprise, hardware encryption (AES, SHA, RSA), and secure boot.
  • Onboard PCB antenna for a compact, cost-effective design without external antenna components.

Applications

  • Smart home automation hubs and sensor nodes.
  • Industrial wireless control and monitoring (IIoT).
  • Wearable devices and Bluetooth-enabled gadgets.
  • Voice assistants and audio streaming applications.
  • Prototyping and educational development boards.

Technical Specifications

Microcontroller/SoCEspressif ESP32 Dual-Core Xtensa LX6
Wireless ProtocolsWi-Fi 802.11 b/g/n, Bluetooth 4.2 BR/EDR & BLE
Frequency Range2.4GHz ISM Band
Flash Memory16 MB (128 Mbit)
SRAM520 KB
Supply Voltage2.2V - 3.6V DC
Operating Current~80 mA (average during RF operation)
InterfacesUART, SPI, I2C, I2S, SDIO, PWM, ADC, DAC, GPIO, Touch
Antenna ConnectorIntegrated PCB Antenna
Operating Temperature-40°C to +85°C (typical for ESP32)
Dimensions18mm (W) x 20mm (L)

Frequently Asked Questions

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

The primary difference is the antenna connector. The ESP32-WROOM-32D features an integrated PCB antenna, making it a compact, solder-and-go solution. The ESP32-WROOM-32U variant integrates a U.FL (IPEX) connector, allowing you to attach an external antenna via a pigtail cable for improved range or specific placement needs. The core ESP32 chip and functionality are identical between the two models.

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

You can program the module using popular development frameworks. For beginners, the Arduino IDE with the ESP32 board package is straightforward. For advanced features and low-level control, Espressif's official ESP-IDF framework is recommended. MicroPython is also a popular option for rapid scripting. You will need a USB-to-serial adapter (like an FTDI board) to connect the module's UART pins (TX, RX, EN, GPIO0) to your computer for flashing and serial communication.

What is the power consumption and how can I optimize it for battery life?

The module draws an average of 80 mA during active RF operation. For battery-powered projects, you must leverage the ESP32's deep sleep modes. In deep sleep, current consumption can drop to around 10 µA. You program the device to wake up periodically from a timer, external GPIO interrupt, or touch sensor, take a measurement, transmit data via WiFi or BLE, and then re-enter deep sleep. Proper power supply design and disabling unused peripherals in code are crucial for maximizing battery life.

Package Includes

  • 1 x ESP32-WROOM-32D WiFi Bluetooth Module

Additional Information

Weight 0.01 kg
Dimensions 2 × 1.8 cm