The Wi-Fi based Arduino Mega is the version combined with the Esp8266 module. The CH340G has a USB-to-TTL converter and Esp8266 32mb flash. It is the same size as the Arduino Mega. Arduino mega and Esp8266 can operate the module separately.

With the 8 Dip Switch on the card, you can connect with other modules or you can operate them separately.

WiFi-Based MEGA Product Features:

• Microcontroller : ATmega2560
• Wi-Fi : ESP8266
• USB to TTL Converter : CH340G
• Power Output : 5V-800mA
• Power Input USB: 5V (no more than 500mA)
• Power Input VIN/DC Jack: 9-24V
• Power Consumption: 5V 800mA
• Logic Voltage Level: 5V
• Wireless Internet : Wireless 802.11 b/g/n 2.4GHz
• USB : Micro USB
• Clock Frequency: 16MHz
• Working Supply Voltage: 5V
• Digital I/O : 54
• Analog I/O: 16
• Memory Size : 256kb
• Data RAM Type/Size: 8kb
• Data ROM Type/Size: 4Kb
• Interface Type : Serial OTA
• Working Temperature : -40C° / +125C°
• Length x Width: 53,361 x 101.86mm
• Antenna : Internal External Antenna

Note: Do not forget to press the "mode" button when loading the Esp8266 module.

Drivers

Windows

https://robotdyn.com/pub/downloads/comp_docs/CH340/CH341SER.ZIP

MacOS

https://robotdyn.com/pub/downloads/comp_docs/CH340/CH341SER_MAC.ZIP

Linux

https://robotdyn.com/pub/downloads/comp_docs/CH340/CH341SER_LINUX.ZIP

CARD SETUP

1. STEP

Open Arduino ide File > On the Preferences screen, click on Additional Circuit Boards Manager URLs (Field in Red).

http://arduino.esp8266.com/stable/package_esp8266com_index.json

Paste the link and click OK.

2. STEP

Then Tools > Card > Enter Card Manager

3. STEP

In the card manager screen, type esp in the search box and click ESP8266 Community and install the card.

4 .STEP

After installing the card, Tools > We choose "Generic Esp8266 Module" from the cards.

Finally, you can start using the port where the card is inserted.

Sample Codes:

 void setup()

{

  Serial3.begin(115200);

  pinMode(13,OUTPUT);

  delay(500);

  Serial3.println("AT+CIPMUX=1");

  delay(2000);

  Serial3.println("AT+CIPSERVER=1,5000");

  delay(2000);

  Serial3.println("AT+CIPSTO=3600");

  delay(2000);

}

 

void loop()

{

   while(Serial3.available())

  {

char Rdata;

Rdata=Serial3.read();

if(Rdata=='A'|Rdata=='a')

{

  digitalWrite(13,HIGH);

  delay(50);

}

else if(Rdata=='B'|Rdata=='b')

{

  digitalWrite(13,LOW);

  delay(10);

  digitalWrite(13,HIGH);

  delay(10);

  digitalWrite(13,LOW);

}

else

{

  digitalWrite(13,LOW);

}

  }

}