ESP-WROOM-02U-N4
Overview
The ESP-WROOM-02U-N4 is a compact 2.4GHz Wi-Fi module based on the ESP8266EX SoC, featuring an integrated 4MB flash and a U.FL connector for external antenna attachment. It supports 802.11b/g/n protocols and provides a cost-effective solution for adding wireless connectivity to space-constrained designs. The module is designed for reliable performance in industrial environments with a wide operating voltage range of 2.7V to 3.6V.
Why Choose This Part
This module offers a high output power of 20.5dBm and excellent sensitivity of -98dBm for robust link budgets. Its small 18-SMD form factor and U.FL connector make it ideal for applications where a PCB trace antenna would be shielded by an enclosure. The deep-sleep current of 20uA enables efficient operation in battery-powered IoT devices.
Applications
Key Specifications
Getting Started
Developers can use the Espressif IoT Development Framework (ESP8266 RTOS SDK) or the Arduino Core for ESP8266 for firmware development. Hardware prototyping is best supported by using the ESP8266-DevKitC or similar breakout boards that provide USB-to-UART bridging and 3.3V regulation. Use the Esptool.py utility for flashing the 4MB onboard memory via the UART interface.
Also Consider
Espressif Systems
- Offers significantly more RAM and dual-core performance along with Bluetooth LE if the ESP8266 resources are insufficient.
