Chapter 12. WiFi Servos

Servos: They’re Where the Action Is

One of the most versatile mechanical devices available for robotics, or pretty much any kind of physical control work, is the servo (shown in Figure 12-1). A servo is a package containing a motor and electronics that responds to a signal by rotating to a specified location. Give it one value, and it will spin to the left; another spins to the right. Simple mechanical linkages (aka horns) can turn this motion into a push-pull motion, which is how servos control radio-controlled model airplanes. Servos are generally limited to about 180 degrees of motion, but they can easily ...

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