360 degree Rotary Encoder Module

360 degree Rotary Encoder Module

The rotary encoder can count the number of pulses output in the forward and reverse directions by rotation, and the rotation count is not like the potentiometer. This rotation count is not limited. With the key on the rotary encoder, you can reset to the initial state, that is, counting from 0.

Specifications:

Operating voltage: 5V

Number of pulses: 20

Rotary Encoder Basics:

A rotary encoder has a fixed number of positions per revolution. These positions are easily felt as small “clicks” you turn the encoder.

On one side of the switch there are three pins. They are normally referred to as A, B and C.

Inside the encoder there are two switches. Once switch connects pin A to pin C and the other switch connects pin B to C.

In each encoder position, both switches are either opened or closed. Each click causes these switches to change states as follows:

• If both switches are closed , turning the encoder either clockwise or counterclockwise one position will cause both switches to open

• If both switches are open , turning the encoder either clockwise or counterclockwise one position will cause both switches to close.