In this project I will show you how you can build your very own Smart plug using ESP8266 Wi-Fi module. The device that we built can easily be plugged into any exiting AC socket and then on the other end you can connect the actual load simply by plugging it into this socket on our device. After that just keep the main switch of your socket always on, and you can control your Load directly from your Smartphone.
Check out the full DIY tutorial here with necessary circuit diagrams and codes: https://circuitdigest.com/microcontroller-projects/diy-smart-plug-using-esp8266
