In This Chapter
Building an illuminated button pad
Making your first PCB hack
Seeing stunning multicolor effects
Exploring alternate color models
Learning how a keyboard scanning matrix works
This project is about producing a universal 4-x-4 illuminated switch matrix. Why? Because it’s a great base for so many projects with physical interfaces. This chapter shows you how to build and test it, as well as produce a light show with it. In Chapter 8, we show you how to make four games using this interface, as well as a whole host of other uses you can put this to. A photograph of the final project is shown in Figure 7-1.
This interface can be described as an undedicated controller. It consists of 16 push switches, each illuminated by an RGB LED. In Chapter 6, you see how you can ...