When connecting both the ESP8266 and Arduino Mega 2560, serial communication is used to exchange data between the two modules. This is essential for IoT applications where the Mega 2560 handles logic ...

Setup is fairly simple with downloads for Linux, OS X, and Windows. This isn’t an ESP8266 shield, either: you can write code for the ESP module, connect the serial pins, and hit the program button.

If so, it prints a message to the Serial Monitor. Connect the TX pin of the ESP8266 to the RX1 pin (pin 19) of the Arduino Mega, and connect the ground (GND) of both devices. Adjust the baud rate ...