This repository provides an example code for establishing serial communication between an Arduino Uno and an ESP8266 module. The Arduino Uno acts as the host, while the ESP8266 module serves as the ...

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.

You won’t even need a USB connection to upload your sketch as it can be done over WiFi just like with Arduino Yun. The Atmel AVR MCU and ESP8266 processor communicate via either UART or I2C as shown ...