This library allows an Arduino board to control LiquidCrystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. This library is free ...

This project measures distance using an ultrasonic sensor (HC-SR04) and displays it on an I2C-based 16x2 LCD, using an 8051 microcontroller.