Page 198 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

CHAPTER 8

Example: An Arduino Shield

I n this chapter, you will learn how to use EAGLE to design a plug-in shield for the popular

Arduino microcontroller board. The design will use a mixture of SMDs and through-hole
devices. By following this example, you will learn how to design your own Arduino shields.

The example developed is for a four-digit, seven-segment LED display with a few extras in the
form of a real-time clock chip, a piezo buzzer, and a rotary encoder. The shield could be used by
those experimenting with making their own alarm clock or timer of some kind.

Introducing Arduino

Figure 8-1 shows an Arduino Uno board. This is the most popular of the Arduino range of
microcontroller boards.