ESP32 WROOM Module v1.1 w/ PCB Antenna
ESP32 WROOM Module v1.1 w/ PCB Antenna - Image 2
ESP32 WROOM Module v1.1 w/ PCB Antenna - Image 3
SKU: IOWC-1893
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ESP32 WROOM Module v1.1 w/ PCB Antenna

₹379.00 (Inclusive of all taxes)
Out of Stock

The ESP32 WROOM Module v1.1 is a dual-core Wi-Fi and Bluetooth 4.2 combo MCU module, featuring 4MB flash and a PCB antenna, designed for low-power IoT sensor networks, home automation, and wearable electronics.

Features

  • Dual-core Xtensa LX6 processor with adjustable clock frequency from 80 MHz to 240 MHz for demanding tasks like voice encoding and MP3 decoding.
  • Integrated Wi-Fi 802.11 b/g/n and Bluetooth 4.2 BR/EDR & BLE, supporting data rates up to 150 Mbps with 22 dBm output power for extended range.
  • Ultra-low-power architecture with deep sleep currents under 5µA, perfect for battery-powered IoT sensor hubs and wearable applications.
  • On-board 4MB flash memory and 520KB SRAM for firmware and data storage, coupled with a standard PCB antenna for simplified RF design.
  • Robust operating voltage range of 2.3V to 3.6V and industrial temperature rating from -40°C to 90°C for reliable deployment in harsh environments.

Out of stock

Description

The ESP32 WROOM Module v1.1 is a highly integrated wireless microcontroller unit based on Espressif’s ESP32 chipset. It combines a dual-core processor with Wi-Fi 802.11 b/g/n and Bluetooth 4.2 BR/EDR & BLE connectivity, targeting a wide spectrum of IoT applications from simple sensor nodes to complex tasks like music streaming. The module’s RF front-end integrates the antenna switch, balun, power amplifier, and filters, minimizing external component count and PCB area.

Engineered for power efficiency, the ESP32 features fine-resolution clock gating, multiple power modes, and dynamic power scaling, enabling sleep currents below 5 microamps. This makes it ideal for perpetually powered devices. The module supports a broad 2.3V to 3.6V supply range and operates reliably across an industrial temperature span from -40°C to 90°C, ensuring stability in challenging conditions.

Key Features

  • Dual-core Xtensa LX6 microprocessor with individually controllable power domains and clock frequency scalable from 80 MHz to 240 MHz.
  • Hybrid wireless connectivity supporting 2.4 GHz Wi-Fi 802.11 b/g/n with up to 150 Mbps data rate and Bluetooth 4.2 Classic & Low Energy (BLE).
  • Ultra-low-power management system with multiple sleep modes, including a deep sleep mode consuming less than 5µA for battery-operated designs.
  • High level of system integration with on-chip antenna switch, RF balun, power amplifier, low-noise amplifier, filters, and power management modules.
  • Ample memory resources with 4 MB of integrated flash storage and 520 KB of SRAM for application code and data processing.
  • On-board PCB antenna simplifies design and reduces BOM cost, providing standard RF performance for most applications.
  • Comprehensive peripheral set including SPI, I2C, I2S, UART, and ADC interfaces for sensor and actuator connectivity.
  • Supported by Espressif's ESP-IDF framework, Arduino core, and MicroPython for rapid firmware development and deployment.

Applications

  • Universal low-power IoT sensor hubs and data loggers for environmental monitoring.
  • Home automation and smart socket controllers for Wi-Fi and Bluetooth-enabled devices.
  • Wearable electronics and health monitoring devices leveraging ultra-low-power sleep modes.
  • Industrial wireless control systems and mesh networking applications.
  • Voice recognition devices, video streaming for cameras, and OTT TV box peripherals.
  • Smart toys, asset trackers, and location-aware beacon systems.

Technical Specifications

Microcontroller/SoCEspressif ESP32 Dual-Core Xtensa LX6
Wireless ProtocolsWi-Fi 802.11 b/g/n, Bluetooth 4.2 BR/EDR & BLE
Frequency Range2.4 GHz
RF Transmit PowerUp to 22 dBm
RF Sensitivity-98 dBm
Supply Voltage2.3 V to 3.6 V
Operating Current (Active)~80 mA
Deep Sleep Current< 5 µA
Flash Memory4 MB
SRAM520 KB
Clock Frequency80 MHz to 240 MHz (adjustable)
Antenna ConnectorIntegrated PCB Antenna
Operating Temperature-40°C to +90°C
Dimensions (L x W)49.5 mm x 26.5 mm

Frequently Asked Questions

What is the difference between the ESP32 WROOM and the ESP32-S modules?

The ESP32 WROOM is an earlier module series based on the original ESP32 chip, featuring integrated flash and a PCB antenna. The ESP32-S series (like ESP32-S3) are newer revisions with enhanced peripherals, improved security, and sometimes different memory configurations. For this v1.1 WROOM module, firmware is typically developed using the ESP-IDF framework or Arduino core for the standard ESP32 chipset.

How do I program this ESP32 WROOM module and what development frameworks are supported?

You can program it using Espressif's official ESP-IDF (IoT Development Framework) with GCC toolchain for full feature access. It is also widely supported by the Arduino Core for ESP32 via the Arduino IDE or PlatformIO. Connect the module's serial (UART) pins (TX/RX, EN, GPIO0) to a USB-to-Serial adapter. Put the board into download mode by pulling GPIO0 low on reset, then flash your compiled firmware using esptool.py or the IDE's uploader.

What is the power consumption in active and deep sleep modes for battery-powered designs?

During active Wi-Fi or CPU operation, the module draws approximately 80 mA. Its key advantage is ultra-low deep sleep current, which can be less than 5 microamps (µA) when the main CPUs are powered down and only the RTC slow memory and coprocessor are active. This enables years of operation on battery power for periodic sensor reading applications. Ensure your power supply can deliver between 2.3V and 3.6V.

Can I replace the onboard PCB antenna with an external antenna for better range?

No, this specific ESP32 WROOM v1.1 module variant has a permanently integrated PCB antenna. The RF trace is not designed for an external antenna connector. For projects requiring an external antenna, consider modules like the ESP32-WROOM-32UE which includes an IPEX connector. The PCB antenna provides standard performance suitable for most indoor and short-range applications up to the module's 22 dBm transmit power.

Package Includes

  • 1 x ESP32 WROOM MCU Module (Version 1.1)

Additional Information

Weight 0.01 kg
Dimensions 4.95 × 2.65 cm

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