September 2015
Beginner
492 pages
13h 14m
English
Content preview from Robot Building for Beginners, Third Edition
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CHAPTER 15
Comparators
You’re in the midst of prototyping a line-following robot on a solderless breadboard. At this point, the breadboard has a power supply (9 V battery), a power switch, a power indicator (LED circuit), and two pairs of brightness sensors. It’s time to add some brains.
In this chapter, you’ll learn about a comparator chip. Upon adding it to the breadboard, it compares the sensors and illuminates an LED depending on which pair of sensors is receiving more light.
Voltage Comparator
An analog voltage comparator chip (see Figure 15-1) is somewhat like a tiny voltmeter with built-in switches. It samples voltages at two points and ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.