Page 81 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards
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CHAPTER 4
Editing Schematics
I n Chapter 2, we very quickly built the schematic for a simple LED flasher using a 555 timer. In
this chapter, after some general explanation of the Schematic Editor, we will start developing a
second project, a sound-level meter that includes a small amplifier and 10 LEDs to indicate the level
of sound. This project will be continued in Chapter 5 when we come to look at laying out PCBs in
more detail.
Because you are going to be experimenting with various editor commands to see how things work,
it is probably a good idea to create a new “play” project to which you can add a new schematic for
experimenting with.
The Anatomy of the Schematic Editor
Figure 4-1 shows a new “Schematic Editor” window. We will now look at the parts of this window
in detail and look at what everything does. We will start by identifying and naming the main areas of
the window.
