A simple serial display
In order to understand how to use a shield, let's start with one of the most basic of the display modules available for Arduino: the serial LCD display. There are several different versions out there, but most provide a simple 2 x 16 character display that can be driven by the serial port on Arduino. This particular display is manufactured by a company called SeeedStudio; other manufacturers make a similar display. It is important that the device documents are compatible with Arduino. This means that the manufacturer has evaluated the unit and is suggesting that it is electrically and mechanically compatible with Arduino. These displays are available at most locations where Arduinos are offered.
The following image shows a picture of the display:
In order to connect this display to your Arduino, perform the following steps:
First, you'll need some cabling. In order to connect the LCD to your Arduino, you'll need to add one more cable; this is a four-wire cable that...
