Page 145 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

FIGURE 5-28 Final through-hole board layout.

Sound Meter Layout (Surface-Mount)

Having successfully made the through-hole version of the PCB, it is time to look at producing a
second, more modern version of the board that uses surface-mount components.

In an ideal world, you would be able to use the same schematic but with surface-mount device
(SMD) package variants of the components. Unfortunately, this is not possible in EAGLE. This does
not mean, however, that you have to start the whole design over. The process is to take a copy of the
schematic for the through-hole version and then go through all the components, replacing the through-

hole parts with SMD equivalents.

Create a New Schematic and Board

Make sure that you have saved your through-hole schematic. You are now going to save a copy of the

schematic under a different name but in the same project as the original. Thus, with the Schematic
Editor open, select the option “Save As…” Then save the schematic with the name