EDN

Arduino I2C LCD Backpack Introductory Tutorial

Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel.
GitHub

I2C_LCD_multi_LCD.ino

lcd0.config(38, En_pin, Rw_pin, Rs_pin, D4_pin, D5_pin, D6_pin, D7_pin, BACKLIGHT_PIN, POSITIVE); lcd1.config(39, En_pin, Rw_pin ...
GitHub

I2C_LCD_demo_spectrum_row.ino

lcd.config(39, En_pin, Rw_pin, Rs_pin, D4_pin, D5_pin, D6_pin, D7_pin, BACKLIGHT_PIN, POSITIVE); ...