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.

Here's an example code for using a relay module with WiFi control using an ESP8266 (or ESP32) board. This code will allow you to control a relay via a web interface over WiFi.

Despite a wealth of tutorials for setting up and writing code for the ESP8266 WiFi module, there has not been much of anything on programming this cheap wireless module with the Arduino IDE. Finall… ...