The V0 (also labelled as VEE) connection is for contrast control, and a potentiometer (10K) is usually attached to this terminal. Normally, the R/W terminal is tied to ground. For backlighting purpsoe ...

[Kaushlesh Chandel] prototyped a few projects on his Arduino that use an HD44780 Character LCD. Wanting to keep these projects in one piece, but not sacrifice his Arduino board, so he etched his ow… ...

This Arduino BASIC interpreter will make a really fun one-day project if you’ve already got the parts on hand. [Usmar A. Padow] put together an Arduino Uno, SD card, four line character LCD, … ...