What is an RGB strip?
Using lights to display data can be a simple yet flexible way to get data to the user without connecting a full display. For example, a single light could be turned on or off to indicate whether a robot is powered on or the state of a simple sensor. A multicolor light can change color to show more detail, to indicate a few different states that the robot is in. RGB in this chapter stands for Red-Green-Blue, so by controlling the intensity levels of these color channels in a light, multiple colors can be shown. We'll investigate how this happens later in the RGB values section.
Adding multiple lights lets you show more data. These can be in a strip (a line of lights), as well as panels/matrixes, rings, and other interesting shapes.
