16x2 LCD To Arduino Interface

Schematic Overview
           Since this is purely an output system, we only need to look at the straight forward interface from Arduino UNO to LCD. As you can see below, the connections are mostly pin to pin with no funny business.

View Full Schematic

Schematic Specifics

16x2 LCD Interface
           3 control pins and 8 data pins are connected from the Arduino to the LCD. These are what will tell the LCD what to do and when.

Trimpot Contrast Control
           The contrast control uses an analog voltage to tell the LCD how dark or bright the contrast should be. Using a trimpot here allows for easy adjusting.