SKU: IOWC-1868
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ESP32-WROOM-32D 8M 64Mbit Flash WiFi Bluetooth 4.2 Module

₹349.00 (Inclusive of all taxes)
Out of Stock

The ESP32-WROOM-32D is a dual-core Wi-Fi + Bluetooth 4.2 MCU module with 8MB flash, designed for IoT applications. It supports Arduino IDE, ESP-IDF, and MicroPython, operating from 2.2V to 3.6V for low-power sensor networks and connected devices.

Features

  • Dual-core Xtensa LX6 processor with 8MB SPI flash for complex IoT firmware and data logging.
  • Integrated 802.11 b/g/n Wi-Fi (up to 150 Mbps) and Bluetooth 4.2 with BR/EDR and BLE support.
  • Comprehensive I/O set including UART, SPI, I2C, ADC, DAC, PWM, capacitive touch, and GPIOs.
  • Low operating voltage range (2.2V-3.6V) and support for deep sleep modes for battery-powered designs.
  • Native support for TCP/IP, SSL, HTTP, MQTT, and other network protocols for cloud connectivity.

Out of stock

Description

The ESP32-WROOM-32D module integrates Espressif’s powerful ESP32-D0WD dual-core microcontroller with 8MB of SPI flash memory. This provides a robust foundation for developing IoT endpoints requiring both Wi-Fi and Bluetooth Classic/LE connectivity. The module’s processing power and ample memory make it suitable for tasks ranging from simple sensor data transmission to more demanding applications like audio streaming or local data processing.

Engineered for flexible deployment, the module supports Station, SoftAP, and combined Wi-Fi modes, enabling direct device-to-device communication or connection to existing networks. Its rich peripheral interface suite allows direct sensor integration, actuator control, and communication with other serial devices, minimizing the need for external components. The integrated RF circuitry is optimized for a stable link, requiring only an external antenna for operation.

Key Features

  • Dual-core 32-bit LX6 microprocessor for efficient multitasking and real-time performance.
  • 8MB SPI flash memory for storing application code, file systems, and OTA updates.
  • Integrated 2.4GHz RF transceiver supporting 802.11 b/g/n Wi-Fi and Bluetooth v4.2 BR/EDR/BLE.
  • Low-power operating modes including deep sleep for extended battery life in field deployments.
  • Comprehensive security features with WPA/WPA2, hardware encryption (AES, SHA, RSA), and secure boot.
  • Extensive GPIO and peripheral support for sensors, displays, motors, and serial communication.
  • Robust software support via Espressif's ESP-IDF, Arduino core, and MicroPython frameworks.

Applications

  • Smart home automation devices (sensors, switches, controllers).
  • Industrial IoT telemetry and wireless sensor networks.
  • Wearable tech and personal healthcare monitoring gadgets.
  • Voice assistants and audio streaming devices.
  • Prototyping and educational development boards for IoT.

Technical Specifications

Microcontroller / SoCEspressif ESP32-D0WD (Dual-core Xtensa LX6)
Wireless ProtocolsWi-Fi 802.11 b/g/n, Bluetooth 4.2 BR/EDR & BLE
Frequency Range2.4GHz
Flash Memory8 MB (64 Mbit)
SRAM520 KB
ROM448 KB
Supply Voltage2.2V - 3.6V
Operating Current (Typical)~80 mA (Wi-Fi active)
InterfacesUART, SPI, I2C, I2S, SDIO, PWM, GPIO, ADC, DAC, Touch
Antenna ConnectorPCB Trace Antenna (integrated)
Operating TemperatureStandard commercial range (refer to datasheet)
Dimensions (L x W)18mm x 20mm

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 uses an integrated PCB trace antenna, while the ESP32-WROOM-32U features an external U.FL/IPEX connector for connecting a removable antenna. This allows the 32U variant to use higher-gain external antennas for extended range in specific deployments. Both share identical core specifications, including the dual-core processor, memory, and wireless capabilities.

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

You can program it using several development frameworks. The most common method is via the Arduino IDE using the ESP32 board manager package. For full low-level control, use Espressif's official ESP-IDF framework. You'll 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 during development.

What is the power consumption of this module in deep sleep mode?

While the exact deep sleep current depends on configuration and which peripherals remain powered, the ESP32 core can achieve deep sleep currents in the range of 10s of microamps (µA). To achieve the lowest power consumption, ensure all unused GPIOs are configured correctly and leverage the ESP-IDF's power management APIs or Arduino libraries designed for low-power operation in battery-based projects.

Package Includes

  • 1 x ESP32-WROOM-32D 8MB Flash WiFi Bluetooth Module

Additional Information

Weight 0.01 kg
Dimensions 2 × 1.8 cm