Espressif ESP32-C3-WROOM-02-N4 Wi-Fi & BLE Module w/ PCB Antenna
Espressif ESP32-C3-WROOM-02-N4 Wi-Fi & BLE Module w/ PCB Antenna - Image 2
SKU: IOWC-0708
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Espressif ESP32-C3-WROOM-02-N4 Wi-Fi & BLE Module w/ PCB Antenna

₹269.00 (Inclusive of all taxes)
Out of Stock

The Espressif ESP32-C3-WROOM-02-N4 is a surface-mount Wi-Fi and Bluetooth Low Energy (BLE) module based on the ESP32-C3 RISC-V SoC, featuring an integrated PCB antenna and 4MB external flash for IoT application development.

Features

  • ESP32-C3 RISC-V single-core processor for efficient Wi-Fi and BLE 5.0 connectivity.
  • Integrated PCB antenna simplifies design and reduces BOM for compact IoT devices.
  • 4MB external SPI flash provides ample storage for application code and file systems.
  • Low power consumption with multiple sleep modes suitable for battery-powered applications.
  • Robust operating temperature range from -40°C to 85°C for industrial and outdoor use.

Out of stock

Description

The ESP32-C3-WROOM-02-N4 is a certified, production-ready wireless module from Espressif, integrating the ESP32-C3 single-core RISC-V processor with 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 LE. It is designed for surface-mount assembly, offering a complete RF solution with an on-board PCB antenna, simplifying PCB layout and reducing external component count.

With 400KB SRAM and 4MB of external flash, the module provides sufficient memory for complex IoT applications, OTA updates, and network protocol stacks. Its peripheral set includes UART, SPI, I2C, I2S, and PWM, enabling versatile sensor integration and control. The module’s low power architecture supports deep sleep modes, making it ideal for smart home, industrial automation, and wearable devices requiring extended battery life.

Key Features

  • Based on the ESP32-C3, Espressif's first RISC-V based SoC for Wi-Fi and BLE.
  • Integrated PCB antenna eliminates the need for an external antenna connector in space-constrained designs.
  • Supports IEEE 802.11 b/g/n Wi-Fi with data rates up to 150 Mbps.
  • Full Bluetooth 5.0 LE support for point-to-point and mesh networking.
  • Rich peripheral interface set including 22 programmable GPIOs.
  • Certified module (FCC/CE/RoHS) for faster time-to-market and regulatory compliance.
  • Compatible with Espressif's ESP-IDF, Arduino Core, and MicroPython for rapid development.
  • Secure boot and flash encryption hardware accelerators enhance application security.

Applications

  • Smart home automation devices (sensors, switches, lighting control).
  • Industrial IoT (IIoT) for wireless monitoring and control.
  • Consumer electronics like wearables and smart appliances.
  • Battery-powered sensor nodes for environmental monitoring.
  • Bluetooth mesh networks for lighting and beacon applications.

Technical Specifications

Microcontroller/SoCESP32-C3 (RISC-V single-core, up to 160 MHz)
Wireless ProtocolsWi-Fi 802.11 b/g/n, Bluetooth 5.0 LE
Frequency Range2.4 GHz
RF Transmit PowerUp to +20 dBm (programmable)
RF Sensitivity-105 dBm
Supply Voltage3.0V to 3.6V
Operating Current~70 mA (average active)
InterfacesGPIO, UART, SPI, I2C, I2S, PWM, ADC, RMT
Antenna ConnectorIntegrated PCB Antenna
Operating Temperature-40°C to 85°C
Dimensions18.0mm x 25.5mm x 3.1mm (Module)

Frequently Asked Questions

What is the main difference between the ESP32-C3 and the classic ESP32?

The ESP32-C3 is Espressif's first RISC-V based single-core SoC, offering a more streamlined architecture with lower power consumption and integrated Bluetooth 5.0 LE, whereas the classic ESP32 features a dual-core Xtensa processor. The C3 is ideal for cost-sensitive and power-efficient applications where dual-core performance is not required.

How do I program the ESP32-C3-WROOM-02 module?

You can program it using Espressif's official ESP-IDF framework, the Arduino Core for ESP32, or MicroPython. Connect the module's UART0 pins (GPIO20/TXD, GPIO21/RXD) to a USB-to-serial adapter. Use a 3.3V power supply and put the GPIO9 pin low during boot to enter download mode for firmware flashing via esptool.py or the Arduino IDE.

Can I use an external antenna with this module?

The ESP32-C3-WROOM-02-N4 variant comes with a fixed, integrated PCB antenna. For designs requiring an external antenna, you would need the ESP32-C3-WROOM-02U variant, which features an IPEX/U.FL connector. The PCB antenna version is not designed for external antenna connection without significant board modification.

What is the typical power consumption in deep sleep mode?

The ESP32-C3-WROOM-02 module can achieve deep sleep currents in the range of 5 to 10 µA when the RTC and ULP-RISC-V coprocessor are active, making it highly suitable for battery-powered sensor nodes that wake periodically to transmit data over Wi-Fi or BLE.

Package Includes

  • 1 x Espressif ESP32-C3-WROOM-02-N4 Module

Additional Information

Weight 0.01 kg
Dimensions 1.8 × 2.5 × 0.31 cm

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