Arduino UNO R3 with Integrated WiFi Module

Arduino UNO R3 with Integrated WiFi Module – ATmega328P + ESP8266

This enhanced Arduino UNO R3 board combines the classic ATmega328P microcontroller with an integrated ESP8266 WiFi module, offering the best of both worlds: reliable Arduino functionality and built-in wireless communication. It’s ideal for IoT (Internet of Things) projects, smart devices, and wireless data applications.

The board can operate in three modes: UNO only, ESP8266 only, or UNO + ESP8266 combined, selectable via onboard DIP switches. This makes it a versatile platform for beginners and advanced makers alike.

Key Features

• Combines Arduino UNO R3 and ESP8266 WiFi module

• Dual microcontrollers: ATmega328P and ESP8266 (8MB flash)

• DIP switches for mode selection: UNO / ESP / Both

• CH340G USB-to-Serial converter for easy programming

• Compatible with Arduino IDE and NodeMCU firmware

• Excellent for IoT, automation, and remote sensing projects

Specifications

Package Includes

• 1 × Arduino UNO R3 with Built-in ESP8266 WiFi Module

🌐 Tip: Use DIP switches to set the correct communication mode before uploading code to either the UNO or ESP8266.