USB Cables: For connecting Arduino UNO and NodeMCU ESP8266 to the computer for programming and power. Serial Connection Wires: To establish communication between Arduino UNO and NodeMCU ESP8266.

Serial Communication with Arduino and ESP8266 This project demonstrates how to establish serial communication between an Arduino board and the ESP8266 Wi-Fi module for sending and receiving data.

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.