Beginning Arduino Programming

Reading Schematics

Let's revisit our basic circuit that we discussed earlier in this chapter from Figure 12-1, drawing it up in a type of diagram shown in Figure 12-10.

Figure 12-10. Basic circuit schematic

This drawing, an exact representation of the gadget in Figure 12-1, is a fairly standard wiring diagram called a schematic. We've been using them throughout this book, but you might want to know a little more about how they work. Schematics are a bit pictographic, like something out of the caves of Lascaux, but it shows us clearly how the circuit described earlier is connected. Once we know what the somewhat standardized symbols mean, in ...