ESP32 I2C LCD Display (16x2)

In this project, we display text by connecting a 16x2 character LCD screen to the ESP32 via the I2C protocol. Thanks to I2C, we can control the screen using just two data pins (SDA and SCL), eliminating the waste of 6+ pins associated with a classic parallel connection. The code prints a fixed message on the first line and a counter that increments every second on the second line. Additionally, we run an I2C scanner at the start to print the display’s address to the Serial Monitor (typically 0x2