© Neil Cameron 2019
Neil CameronArduino Appliedhttps://doi.org/10.1007/978-1-4842-3960-5_4

4. Liquid Crystal Display

Neil Cameron1 
Edinburgh, UK

../images/471900_1_En_4_Chapter/471900_1_En_4_Figa_HTML.jpgThe liquid crystal display (LCD) screen displays output from the Arduino, so that the Arduino does not need to be connected to a computer screen or laptop. A 16×4 LCD with a HD44780 controller is used in the chapter, which can display four rows of 16 characters per row, with each character defined by an 8×5–pixel array. LCDs have different sizes such as 16×2, 16×4, 20×2, and 20×4.

The LCD has 16 pins numbered from left to right, when looking down on the screen. Some LCDs have no backlight function, so pins ...

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