Page 38 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

FIGURE 2-4 Schematic window.

In Figure 2-4, the most important icons have been highlighted. The “Add” icon is used when
adding new components to the schematic, and as you might expect, the “Delete” button removes them.
Less obviously, there is also an icon for “Move” as well as icons for “Name” and “Value” that will
change the properties of the components that have been added.

EAGLE operates on a different principle than most document editing systems. As an example, in a
word processor, you generally would highlight some text and then click on the “Bold” icon to make
the text bold. You select the thing or things and then select an action to apply to them. This is not the
case for EAGLE. In EAGLE, it is the other way around. First, you select the action (Move, Delete,

Name, Value, Net, etc.), and then you select the component you want to apply it to. This is a little
confusing at first, but after a while, it will become second nature.

Drawing the Schematic

You are now ready to start drawing the schematic diagram for this project. This is really a two-stage
process. For a simple project such as this, it is easiest to add all the components and then start
connecting them together.