Articles about microcontrollers, Arduino, ESP8266, ESP32 and others

ESP32 as Web Server controlling two relays and one LCD display via I2C bus

In this example we will use the Espressif ESP32 working as Web server with WiFi connection, that host a web page witch allows to control on-off state of two relays. This can be util for to drive high voltage loads connected to 110VAC or 220VAC, such as motors, electrovalves, contactors, etc.