Arduino Applied: Comprehensive Projects for Everyday Electronics

© Neil Cameron 2019

Neil CameronArduino Appliedhttps://doi.org/10.1007/978-1-4842-3960-5_14

14. Sensing Colors

Neil Cameron¹ 

(1)

Edinburgh, UK

 

A color can be defined as a combination of red, green, and blue components, as shown in Figure 14-1. One byte or 8 bits is used to store each of the red, green, and blue values with 2⁸ = 256 possible values for each of the red (R), green (G), and blue (B) components of the compound color. For example, magenta has a (255, 0, 255) RGB format.

Figure 14-1

RGB color values

Red Green Blue (RGB) LED

An RGB LED consists ...