Mega +WiFi R3 Atmega2560+NodeMCU ESP8266 32Mb Memory USB-TTL CH340G Compatible for Arduino Mega

Mega WiFi R3 Atmega2560 NodeMCU ESP8266 32Mb Memory USB-TTL CH340G Compatible For Arduino Mega is Full integration on one board Mega R3 ATmega2560 and WiFi ESP8266 with memory 32Mb.
All of the modules can work together or separately. And everyone has their own pinout headers. The convenient solution for the development of new projects requiring Uno and WiFi. Via USB you can update sketches and firmware for ATmega328 and for ESP8266.
It is a customized version of the classic ARDUINO MEGA R3 board. Full integration of Atmel ATmega2560 microcontroller and ESP8266 Wi-Fi IC, with 32 Mb (megabits) of flash memory, and CH340G USB-TTL converter on a single board! All components can be set up to work together or independently.
For this onboard have the USB-serial converter CH340G. Use this board is very simple. The board has DIP-switch, to connect the modules. For example, to USB and ATmeg2560, USB and ESP8266, ATmega2560 and ESP8266.

Switch status and model selection:
Connection↓/Switch No.→ 1 2 3 4 5 6 7 8
CH340 connect to ESP8266 (upload sketch) OFF OFF OFF OFF ON ON ON NoUSE
CH340 connect to ESP8266 (connect) OFF OFF OFF OFF ON ON OFF NoUSE
CH340 connect to ATmega2560 (upload sketch) OFF OFF ON ON OFF OFF OFF NoUSE
CH340 connect to Mega2560 COM3 connect to ESP8266 ON ON ON ON OFF OFF OFF NoUSE
Mega2560 ESP8266 ON ON OFF OFF OFF OFF OFF NoUSE
All modules work independently OFF OFF OFF OFF OFF OFF OFF NoUSE
Also, have the switch to change of connecting port between ATmega2560 and ESP8266
After choosing the mode of the board can proceed to set up the IDE
It is important that when the ESP8266 module is programming, it is necessary to press the button “Mode”