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Lesson 97-1: Detecting Rotary Encoder Rotation and Pushing the Switch

In this lesson, we learn how to use a rotary encoder knob. Then, we learn how to use it to control the position of a servo motor (97-2). In this lesson (97-3), we also display the position of the servo motor on an LCD screen using Arduino. This code will work with all Arduino boards. This code is just demonstrating the rotary encoder and detecting the pushing of the switch built into the encoder.