ESP32-WROOM-32E Development Board Module for Arduino

The ESP32-WROOM-32E is a powerful dual-core microcontroller module featuring integrated Wi-Fi and Bluetooth connectivity, designed for IoT applications, embedded systems, and Arduino-compatible projects. Professional engineers and embedded systems developers use this module to build connected devices that require wireless communication, real-time processing, and low power consumption in a compact form factor. This module solves the challenge of integrating wireless connectivity with processing power while maintaining compatibility with Arduino development environments and libraries.

Product Overview

The ESP32-WROOM-32E combines Espressif's ESP32 dual-core processor with integrated 802.11 b/g/n Wi-Fi and Bluetooth 5.0 (LE and Classic) capabilities in a single module. The device operates at 240 MHz with 520 KB of SRAM and 16 MB of external flash memory, providing sufficient resources for complex IoT applications. The module integrates a power management unit, antenna, RF matching network, and crystal oscillator, eliminating the need for external RF components and significantly reducing design complexity. Arduino IDE compatibility through the ESP32 board package allows developers to leverage familiar programming paradigms while accessing advanced hardware features like ADC, SPI, I2C, UART, and PWM interfaces.

The WROOM-32E variant specifically offers enhanced performance characteristics with improved thermal management and stability compared to earlier generations. The module operates across a wide temperature range from -40°C to +85°C, making it suitable for industrial and automotive applications. With built-in security features including WPA2/WPA3 Wi-Fi encryption, secure boot, and flash encryption capabilities, the ESP32-WROOM-32E provides enterprise-grade security for connected devices. The low power modes including deep sleep (consuming as low as 10 microamps) enable battery-powered applications with extended operational lifespans.

Key Specifications

Specification	Details
Product Type	Microcontroller Development Board Module
Brand	Espressif Systems
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Processor	Dual-core Xtensa 32-bit LX6 at 240 MHz
RAM	520 KB SRAM, 16 MB external flash memory
Wireless Connectivity	802.11 b/g/n Wi-Fi and Bluetooth 5.0 (LE and Classic)
Operating Voltage	3.3V with integrated voltage regulator (accepts 4.75V to 5.5V input)
GPIO Pins	34 programmable GPIO pins with multiple functions
Interfaces	4x SPI, 2x I2C, 2x UART, 16x PWM, 12-bit ADC, 8-bit DAC

Key Features

• Dual-core processor architecture delivering 240 MHz processing speed with independent task scheduling for simultaneous Wi-Fi communication and application logic execution
• Integrated Wi-Fi 802.11 b/g/n and Bluetooth 5.0 transceiver eliminating need for separate wireless modules and reducing PCB footprint by 60 percent
• Arduino IDE compatibility through official ESP32 board package enabling rapid prototyping with familiar C++ syntax and extensive library ecosystem
• 34 GPIO pins with flexible pin multiplexing supporting SPI, I2C, UART, PWM, ADC, and capacitive touch sensing for complex multi-sensor applications
• Advanced power management with deep sleep mode consuming only 10 microamps enabling battery-powered IoT devices with months of operational life
• Enterprise-grade security featuring WPA2/WPA3 encryption, secure boot, flash encryption, and hardware-accelerated AES encryption for secure data transmission

Applications and Use Cases

• Smart home automation systems requiring local Wi-Fi connectivity and Bluetooth mesh networking for controlling lighting, HVAC, and security devices with millisecond response times
• Industrial IoT sensor nodes collecting temperature, pressure, and vibration data with local processing before transmitting aggregated analytics to cloud platforms via MQTT protocols
• Wearable fitness trackers and health monitoring devices utilizing Bluetooth LE for low-power communication with smartphones while processing sensor data locally
• Environmental monitoring stations measuring air quality, humidity, and UV radiation with Wi-Fi uplink for real-time data visualization and historical trend analysis
• Robotics and drone applications requiring simultaneous motor control via PWM, sensor fusion from multiple I2C/SPI devices, and wireless telemetry transmission
• Audio streaming applications leveraging 520 KB SRAM for buffering and dual-core architecture for simultaneous audio decoding and Wi-Fi reception

How to Use

To begin development with the ESP32-WROOM-32E, first install the ESP32 board package in Arduino IDE by adding the Espressif board manager URL in preferences, then selecting ESP32 Dev Module from the boards menu. Connect the module to your computer via a USB-to-UART adapter (typically CP2102 or CH340), ensuring proper RX/TX connections and ground reference. The module features a built-in USB interface on development boards, allowing direct connection to your computer for programming and serial monitoring. Before uploading your first sketch, verify the correct COM port selection and baud rate (typically 115200) in Arduino IDE serial monitor settings.

Power the module with 3.3V from a regulated supply or use the onboard voltage regulator accepting 4.75V to 5.5V input. For Wi-Fi applications, configure your SSID and password in the Arduino sketch using the WiFi.h library, then implement event handlers for connection status monitoring. When working with Bluetooth functionality, include the BluetoothSerial.h library for classic Bluetooth or BLEDevice.h for Bluetooth Low Energy applications. Utilize the dual-core capability by running computationally intensive tasks on Core 0 while Core 1 handles Wi-Fi communication, preventing network timeouts during heavy processing. Always implement proper error handling and watchdog timer configuration to ensure stable operation in production deployments.

Frequently Asked Questions

What is the difference between ESP32-WROOM-32E and earlier ESP32 variants?

The ESP32-WROOM-32E represents an enhanced version with improved thermal characteristics, better RF performance, and enhanced stability under extended operation. It features optimized power management circuitry, superior antenna design for consistent Wi-Fi signal strength, and better compatibility with modern security protocols including WPA3. The WROOM-32E also offers improved manufacturing consistency and reliability metrics compared to earlier WROOM-32 versions, making it the recommended choice for production deployments.

Can I use this module with Arduino IDE directly?

Yes, the ESP32-WROOM-32E is fully compatible with Arduino IDE. Install the Espressif ESP32 board package through the Arduino Boards Manager, then select ESP32 Dev Module from the board selection menu. You can write sketches using familiar Arduino syntax with digitalWrite, digitalWrite, pinMode functions, while also accessing advanced features like dual-core task scheduling, hardware cryptography, and wireless capabilities through dedicated libraries. The Arduino environment abstracts much of the complexity while allowing access to low-level hardware features when needed.

What power consumption should I expect in different modes?

The ESP32-WROOM-32E consumes approximately 80-160 mA during active Wi-Fi transmission, 40-80 mA during normal operation with Wi-Fi connected but idle, and as low as 10 microamps in deep sleep mode with RTC memory preserved. Light sleep mode consumes around 0.8 mA with CPU suspended but peripherals active. For battery-powered applications, implementing deep sleep with periodic wake-ups using the RTC timer can extend battery life to several months depending on duty cycle and sensor requirements.

How do I program the flash memory and configure partitions?

The ESP32-WROOM-32E uses a partition table system managed through the Arduino IDE. The default partition scheme allocates space for bootloader, application firmware, and SPIFFS filesystem. You can modify partition schemes through Tools menu in Arduino IDE, selecting different configurations for OTA updates, larger application space, or extended filesystem storage. For advanced users, the esptool.py command-line utility provides direct control over partition management, allowing custom partition layouts optimized for specific application requirements.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy ESP32-WROOM-32E Development Board Module for Arduino Online in India

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