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ESP32-WROOM-32UE Development Board Module for Arduino
The ESP32-WROOM-32UE is a powerful dual-core microcontroller module featuring integrated WiFi and Bluetooth connectivity, designed for IoT applications, embedded systems, and Arduino-compatible projects. Electronics engineers, IoT developers, and hobbyists use this module to build connected devices with minimal external components and reduced development time. It solves the challenge of integrating wireless communication into embedded projects while maintaining low power consumption and cost-effectiveness.
Product Overview
The ESP32-WROOM-32UE operates on a dual-core Tensilica Xtensa 32-bit LX6 processor running at 240 MHz, providing sufficient computational power for real-time data processing and wireless protocol handling simultaneously. The module integrates a 4MB SPI flash memory for firmware storage, 520KB SRAM for runtime operations, and dedicated hardware accelerators for cryptographic operations. The UE variant specifically features an external antenna connector, enabling enhanced WiFi and Bluetooth range compared to standard variants, making it ideal for applications requiring extended wireless coverage in industrial and remote deployment scenarios.
This development board includes integrated voltage regulation, decoupling capacitors, and a USB-to-UART converter for seamless programming via the Arduino IDE or MicroPython environments. The module operates at 3.3V logic levels with built-in protection circuits and supports multiple low-power modes including deep sleep at 10 microamperes, making it suitable for battery-powered IoT applications. The ESP32-WROOM-32UE maintains full backward compatibility with Arduino sketches while offering advanced features like real-time operating system support and multiple peripheral interfaces including SPI, I2C, UART, and PWM.
Key Specifications
| Specification | Details |
| Product Type | WiFi and Bluetooth Dual-Core Microcontroller Development Board |
| Processor | Dual-core Tensilica Xtensa 32-bit LX6 at 240 MHz |
| Flash Memory | 4MB SPI Flash |
| RAM | 520KB SRAM |
| Connectivity | 802.11 b/g/n WiFi and Bluetooth 4.2 / BLE |
| Antenna Type | External Antenna Connector (UE variant) |
| Operating Voltage | 3.3V DC |
| GPIO Pins | 34 total pins including 25 GPIO pins |
| ADC Channels | 12-bit SAR ADC with 18 channels |
| Power Consumption | 80 mA typical, 10 microamperes in deep sleep |
| Operating Temperature | -40 to +85 degrees Celsius |
| 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 |
Key Features
- Dual-core processor at 240 MHz enabling parallel task execution and real-time processing without blocking wireless operations
- External antenna connector for enhanced WiFi and Bluetooth range up to 150 meters in open space, critical for industrial IoT deployments
- Integrated 4MB flash memory with OTA firmware update capability, allowing remote device updates without physical access
- Multiple low-power modes including light sleep and deep sleep consuming only 10 microamperes, extending battery life to months or years
- 18-channel 12-bit ADC for analog sensor integration with built-in temperature sensor for environmental monitoring
- Hardware AES, SHA, and RSA acceleration for secure IoT communications and encrypted data transmission
- Full Arduino IDE compatibility with extensive library support, reducing development time and learning curve
- USB-to-UART converter onboard for direct programming without external adapters
Applications and Use Cases
- Smart home automation systems including WiFi-enabled lighting control, temperature monitoring, and security sensors with real-time cloud synchronization
- Industrial IoT sensor nodes for remote machine monitoring, predictive maintenance, and data logging in manufacturing environments with extended wireless range
- Wearable health devices and fitness trackers utilizing Bluetooth Low Energy for smartphone connectivity with minimal power drain
- Environmental monitoring stations for air quality, weather data collection, and agricultural IoT applications with multi-day battery autonomy
- Home security systems including WiFi-enabled door locks, motion detectors, and video doorbell controllers with encrypted communication
- Robotics and drone control systems leveraging dual-core processing for simultaneous motor control and wireless command reception
- Asset tracking and fleet management solutions using WiFi triangulation and Bluetooth beacons for indoor and outdoor positioning
How to Use
Begin by installing the ESP32 board package in the Arduino IDE through the Boards Manager by adding the Espressif Systems repository URL. Connect the ESP32-WROOM-32UE to your computer using a USB cable, which automatically provides power and enables programming through the integrated UART converter. Select the correct board type as ESP32 Dev Module and the appropriate COM port, then upload your first sketch using the standard Arduino upload procedure. The module will enter bootloader mode automatically, flash the firmware, and restart execution.
For WiFi connectivity, use the WiFi.h library to scan available networks and establish connections with WPA2 authentication. The Bluetooth functionality is accessed through the BluetoothSerial library for classic Bluetooth or the BLEDevice library for Bluetooth Low Energy applications. Configure GPIO pins using pinMode and digitalWrite functions identical to standard Arduino boards, but remember that the ESP32 operates at 3.3V logic levels, requiring voltage dividers or level shifters when interfacing with 5V sensors. Utilize the built-in ADC for analog measurements, but note that ADC2 is unavailable when WiFi is active, so plan your sensor connections accordingly. Implement power management by calling esp_deep_sleep_start() for extended battery operation, which preserves RTC memory and allows wake-up via GPIO or timer interrupts.
Frequently Asked Questions
What is the difference between ESP32-WROOM-32 and ESP32-WROOM-32UE?
The primary difference is the antenna configuration. The standard ESP32-WROOM-32 uses an onboard PCB antenna with limited range, while the UE variant features an external antenna connector allowing users to attach high-gain antennas for extended WiFi and Bluetooth coverage. The UE variant is recommended for applications requiring wireless range beyond 50 meters or deployment in environments with obstacles and interference.
Can I use this module with Arduino IDE directly?
Yes, the ESP32-WROOM-32UE is fully compatible with Arduino IDE. You must first install the ESP32 board package through Boards Manager using Espressif's repository URL. Once installed, you can write sketches using standard Arduino functions like digitalWrite, pinMode, and Serial communication. The module also supports MicroPython and other frameworks if you prefer alternative development environments.
What is the maximum current draw and power supply requirements?
The module typically draws 80 mA during normal WiFi operation and up to 160 mA during WiFi transmission peaks. A stable 3.3V power supply with at least 500 mA capacity is recommended. The onboard voltage regulator can accept input from 4.5V to 5.5V, but for optimal stability, use a dedicated 3.3V supply with 10 microfarad and 100 nanofarad bypass capacitors placed close to the VCC pins.
How do I enable WiFi and Bluetooth simultaneously?
The dual-core processor allows simultaneous WiFi and Bluetooth operation without performance degradation. However, note that ADC2 becomes unavailable when WiFi is active. Use WiFi.h for WiFi connectivity and BLEDevice.h for Bluetooth Low Energy or BluetoothSerial.h for classic Bluetooth. The module automatically manages coexistence and time-division multiplexing of the radio hardware.
What is the external antenna connector type?
The ESP32-WROOM-32UE features a U.FL connector, also known as IPEX or MHF4 connector, which is a standard miniature RF connector. You can purchase compatible external antennas rated for 2.4 GHz frequency band with impedance matching to 50 ohms. Ensure proper connection to avoid impedance mismatch and signal loss.
Can I program this module without a development board?
The ESP32-WROOM-32UE module itself requires careful handling of power supply decoupling, pull-up resistors on GPIO0 and EN pins, and a USB-to-UART converter for programming. It is strongly recommended to use a development board which integrates all these components. Bare module programming is possible but requires advanced electronics knowledge and proper circuit design.
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
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy ESP32-WROOM-32UE Development Board Module for Arduino Online in India
Purchase the ESP32-WROOM-32UE Development Board Module for Arduino online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai,
ESP32-WROOM-32UE Development Board Module for Arduino
The ESP32-WROOM-32UE is a powerful dual-core microcontroller module featuring integrated WiFi and Bluetooth connectivity, designed for IoT applications, embedded systems, and Arduino-compatible projects. Electronics engineers, IoT developers, and hobbyists use this module to build connected devices with minimal external components and reduced development time. It solves the challenge of integrating wireless communication into embedded projects while maintaining low power consumption and cost-effectiveness.
Product Overview
The ESP32-WROOM-32UE operates on a dual-core Tensilica Xtensa 32-bit LX6 processor running at 240 MHz, providing sufficient computational power for real-time data processing and wireless protocol handling simultaneously. The module integrates a 4MB SPI flash memory for firmware storage, 520KB SRAM for runtime operations, and dedicated hardware accelerators for cryptographic operations. The UE variant specifically features an external antenna connector, enabling enhanced WiFi and Bluetooth range compared to standard variants, making it ideal for applications requiring extended wireless coverage in industrial and remote deployment scenarios.
This development board includes integrated voltage regulation, decoupling capacitors, and a USB-to-UART converter for seamless programming via the Arduino IDE or MicroPython environments. The module operates at 3.3V logic levels with built-in protection circuits and supports multiple low-power modes including deep sleep at 10 microamperes, making it suitable for battery-powered IoT applications. The ESP32-WROOM-32UE maintains full backward compatibility with Arduino sketches while offering advanced features like real-time operating system support and multiple peripheral interfaces including SPI, I2C, UART, and PWM.
Key Specifications
| Specification | Details |
| Product Type | WiFi and Bluetooth Dual-Core Microcontroller Development Board |
| Processor | Dual-core Tensilica Xtensa 32-bit LX6 at 240 MHz |
| Flash Memory | 4MB SPI Flash |
| RAM | 520KB SRAM |
| Connectivity | 802.11 b/g/n WiFi and Bluetooth 4.2 / BLE |
| Antenna Type | External Antenna Connector (UE variant) |
| Operating Voltage | 3.3V DC |
| GPIO Pins | 34 total pins including 25 GPIO pins |
| ADC Channels | 12-bit SAR ADC with 18 channels |
| Power Consumption | 80 mA typical, 10 microamperes in deep sleep |
| Operating Temperature | -40 to +85 degrees Celsius |
| 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 |
Key Features
- Dual-core processor at 240 MHz enabling parallel task execution and real-time processing without blocking wireless operations
- External antenna connector for enhanced WiFi and Bluetooth range up to 150 meters in open space, critical for industrial IoT deployments
- Integrated 4MB flash memory with OTA firmware update capability, allowing remote device updates without physical access
- Multiple low-power modes including light sleep and deep sleep consuming only 10 microamperes, extending battery life to months or years
- 18-channel 12-bit ADC for analog sensor integration with built-in temperature sensor for environmental monitoring
- Hardware AES, SHA, and RSA acceleration for secure IoT communications and encrypted data transmission
- Full Arduino IDE compatibility with extensive library support, reducing development time and learning curve
- USB-to-UART converter onboard for direct programming without external adapters
Applications and Use Cases
- Smart home automation systems including WiFi-enabled lighting control, temperature monitoring, and security sensors with real-time cloud synchronization
- Industrial IoT sensor nodes for remote machine monitoring, predictive maintenance, and data logging in manufacturing environments with extended wireless range
- Wearable health devices and fitness trackers utilizing Bluetooth Low Energy for smartphone connectivity with minimal power drain
- Environmental monitoring stations for air quality, weather data collection, and agricultural IoT applications with multi-day battery autonomy
- Home security systems including WiFi-enabled door locks, motion detectors, and video doorbell controllers with encrypted communication
- Robotics and drone control systems leveraging dual-core processing for simultaneous motor control and wireless command reception
- Asset tracking and fleet management solutions using WiFi triangulation and Bluetooth beacons for indoor and outdoor positioning
How to Use
Begin by installing the ESP32 board package in the Arduino IDE through the Boards Manager by adding the Espressif Systems repository URL. Connect the ESP32-WROOM-32UE to your computer using a USB cable, which automatically provides power and enables programming through the integrated UART converter. Select the correct board type as ESP32 Dev Module and the appropriate COM port, then upload your first sketch using the standard Arduino upload procedure. The module will enter bootloader mode automatically, flash the firmware, and restart execution.
For WiFi connectivity, use the WiFi.h library to scan available networks and establish connections with WPA2 authentication. The Bluetooth functionality is accessed through the BluetoothSerial library for classic Bluetooth or the BLEDevice library for Bluetooth Low Energy applications. Configure GPIO pins using pinMode and digitalWrite functions identical to standard Arduino boards, but remember that the ESP32 operates at 3.3V logic levels, requiring voltage dividers or level shifters when interfacing with 5V sensors. Utilize the built-in ADC for analog measurements, but note that ADC2 is unavailable when WiFi is active, so plan your sensor connections accordingly. Implement power management by calling esp_deep_sleep_start() for extended battery operation, which preserves RTC memory and allows wake-up via GPIO or timer interrupts.
Frequently Asked Questions
What is the difference between ESP32-WROOM-32 and ESP32-WROOM-32UE?
The primary difference is the antenna configuration. The standard ESP32-WROOM-32 uses an onboard PCB antenna with limited range, while the UE variant features an external antenna connector allowing users to attach high-gain antennas for extended WiFi and Bluetooth coverage. The UE variant is recommended for applications requiring wireless range beyond 50 meters or deployment in environments with obstacles and interference.
Can I use this module with Arduino IDE directly?
Yes, the ESP32-WROOM-32UE is fully compatible with Arduino IDE. You must first install the ESP32 board package through Boards Manager using Espressif's repository URL. Once installed, you can write sketches using standard Arduino functions like digitalWrite, pinMode, and Serial communication. The module also supports MicroPython and other frameworks if you prefer alternative development environments.
What is the maximum current draw and power supply requirements?
The module typically draws 80 mA during normal WiFi operation and up to 160 mA during WiFi transmission peaks. A stable 3.3V power supply with at least 500 mA capacity is recommended. The onboard voltage regulator can accept input from 4.5V to 5.5V, but for optimal stability, use a dedicated 3.3V supply with 10 microfarad and 100 nanofarad bypass capacitors placed close to the VCC pins.
How do I enable WiFi and Bluetooth simultaneously?
The dual-core processor allows simultaneous WiFi and Bluetooth operation without performance degradation. However, note that ADC2 becomes unavailable when WiFi is active. Use WiFi.h for WiFi connectivity and BLEDevice.h for Bluetooth Low Energy or BluetoothSerial.h for classic Bluetooth. The module automatically manages coexistence and time-division multiplexing of the radio hardware.
What is the external antenna connector type?
The ESP32-WROOM-32UE features a U.FL connector, also known as IPEX or MHF4 connector, which is a standard miniature RF connector. You can purchase compatible external antennas rated for 2.4 GHz frequency band with impedance matching to 50 ohms. Ensure proper connection to avoid impedance mismatch and signal loss.
Can I program this module without a development board?
The ESP32-WROOM-32UE module itself requires careful handling of power supply decoupling, pull-up resistors on GPIO0 and EN pins, and a USB-to-UART converter for programming. It is strongly recommended to use a development board which integrates all these components. Bare module programming is possible but requires advanced electronics knowledge and proper circuit design.
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
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy ESP32-WROOM-32UE Development Board Module for Arduino Online in India
Purchase the ESP32-WROOM-32UE Development Board Module for Arduino online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai,