CHAPTER 9
A Raspberry Pi Expansion Board
In this chapter, we will look in detail at another of the author’s open-source hardware (OSH) projects, specifically, version two of the RaspiRobot board (www.raspirobot.com). This board (Figure 9-1) is designed to allow a Raspberry Pi single-board computer to be powered by batteries and also to control two direct-current (dc) motors. The board has a number of interfaces including to an HC-SR-04 ultrasonic range finder, a 5V I2C interface designed to easily accommodate displays and other I2C devices, and a pair of open-collector outputs.
FIGURE 9-1 The RaspiRobot board version 2.
In following this ...
Get Make Your Own PCBs with EAGLE: From Schematic Designs to Finished Boards now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
