Скачать или смотреть Blinking a lamp by ESP8266 NodeMCU board

You can read this tutorial : https://www.robotique.site/tutorial/b...

The main objective of this tutorial is to control the switching ON and OFF of an electric lamp (operating at 220V AC) using the ESP8266 NodeMCU board. This project demonstrates how to interface a low-voltage microcontroller (ESP8266) with a high-voltage load (a lamp) safely through an electromechanical relay.

Through this tutorial, you will learn how to:
1- Understand the role of the relay module
The relay acts as an electrically operated switch that allows the low-voltage (3.3V) signal from the ESP8266 to control a high-voltage AC circuit (the lamp).
2- Build a simple home automation example
By programming the ESP8266 NodeMCU board, you will be able to make the lamp blink (turn ON and OFF repeatedly) at regular time intervals.
3- Develop essential programming skills using MicroPython
You will write a MicroPython program that sends control signals from a GPIO pin of the NodeMCU to the relay module, defining how long the lamp remains ON and OFF in each cycle.
4- Enhance understanding of electronic interfacing and circuit safety

You will learn the correct way to connect a 220V load through a relay without directly exposing the microcontroller or user to high voltage.