Page 97 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

to be updated, you may have to select “Redraw” from the View menu. To change the text in other
fields, such as the “Design By” and “Rev” fields, there are two possible ways. The neater way only
works if the lettering in the frame has field markers, for example, “>AUTHOR.” If it does, then from
the Edit menu, select the option “Global Attributes..,” and add a new attribute and value, where the

attribute name is the same as the word in the frame but without the > character on the front. Then
redraw the screen to see the attribute value.
Unfortunately, most of the frames in the library, including the Sparkfun library, do not have such
variables defined, so to add the text, use the Text command from the toolbar, enter the text, but before
you drop it over the field, change the layer in the Action toolbar to be layer “94 - Symbols.” You can

also change the text size here or at any time using the Information command, clicking on the text.

Adding the Components

The final set of files for this design, and all the designs in this book, can be downloaded from the
author’s website (www.simonmonk.org). However, I recommend that you follow the instructions to
draw the design for yourself from scratch.

Add the Components

Everyone has different ways of working, but I find it easiest to add all the components that I am going
to need, lining them up neatly before moving them to where they are likely to be needed on the

schematic.
Add the items in Table 4-1 to the schematic. Where possible, the components are from the
Sparkfun library. Searching on the values in the “Device” column works best when searching for the
components in the libraries.

TABLE 4-1 Components Used in the Example Project