LCDs and the Arduino

Making machines talk to humans is quite easy using light indicators or other illumination devices. The most common way of providing information is through a visible light source. By establishing a protocol (set of rules), a messaging scheme is created based on the application definition.

Incandescent lightbulbs were once the component of choice for visual indicators because of their ability to alert someone of a change in a process or the approaching of a dangerous threshold. LEDs improved on the incandescent lightbulb because of low thermals (heat), small size, and greater longevity.

With the arrangement of seven ...

Get Learn Electronics with Arduino now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.