Arduino Mega WiFi R3 Atmega2560 NodeMCU ESP8266 CH340G

Arduino Mega WiFi R3 Atmega2560 NodeMCU ESP8266 CH340G

The Arduino Mega WiFi R3 is a powerful and versatile development board that combines the ATmega2560 microcontroller (from the Arduino Mega 2560) with the ESP8266 WiFi module, creating a seamless platform for both wired and wireless IoT applications. This hybrid board provides the performance of the Mega series along with the connectivity and flexibility of the NodeMCU ESP8266 module — all integrated on a single board.

Equipped with the CH340G USB-to-Serial converter, the board ensures easy communication with your computer via USB while maintaining excellent compatibility with the Arduino IDE. With onboard switches, users can configure operation modes (MCU, WiFi, or combined) without extra wiring, making it perfect for IoT prototyping, home automation, and network-connected projects.

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Features

• Dual Microcontroller System:
• ATmega2560 for high-performance logic and I/O control
• ESP8266 for WiFi networking and IoT connectivity
• Built-in USB to Serial Interface (CH340G) – ensures reliable PC communication
• 16 MHz clock speed (ATmega2560) + 80 MHz (ESP8266) for fast operations
• Integrated mode switch – allows selecting ATmega2560, ESP8266, or both for programming
• Onboard voltage regulators for 5V and 3.3V systems
• Full compatibility with Arduino IDE and ESP8266 libraries
• Multiple I/O pins for sensors, modules, and displays

Applications

• IoT (Internet of Things) Devices
• Home Automation and Smart Control Systems
• Remote Data Monitoring and Logging
• Wireless Sensor Networks
• Web-enabled Robotics Projects
• WiFi-controlled Relays, Motors, and Lighting Systems
• Educational Projects and IoT Prototyping Platforms