“In this tutorial,we are going to learn how to use Blynk app and NodeMCU (ESP8266) in order to control lamp(any other home appliances will be just fine),the combination will be through the internet.
The purpose of this instructable is to show the simplest solution remotely-controlling your Arduino or compatible hardware (NodeMCU) over the Internet and to explore the world of Internet Of Things(IoT).
What’s Blynk ?Blynk is a Platform with iOS and Android apps to control Arduino, Raspberry Pi and the likes over the Internet. Its a digital dashboard where you can build a graphic interface for your project by simply dragging and dropping widgets.(Source : Blynk website).”