GPIO (and therefor I2C) cannot be used at 5v. You will need to use a level shifter on the I2C lines if you want to run the board at 5v. Connections on Raspberry Pi Pico board, other boards may vary.

1602 LCD is very widely used in applications, The original 1602 LCD used HD44780 controller. Now 1602 modules of various manufacturers basically use compatible IC, so the characteristics are basically ...

Learn how to easily adjust the contrast of a 1602 LCD display using Arduino. In this quick tutorial, I’ll show you a simple trick to control the contrast electronically, without relying solely ...