![]() It basically consists of a circular disc (grey colour) with conductive pads (copper colour) placed on top of this circular disc. The internal mechanical structure for the Encoder is shown below. There are many types of Encoders each with its own working mechanism, we will learn about the types later but for now let us concentrate only on the KY040 Incremental Encoder since we are using it for our tutorial. It consists of a knob which when rotates will move step by step and produce a sequence of pulse trains with pre-defined width for each step. So let’s get started.Ī Rotary Encoder is an electromechanical transducer, meaning it converts mechanical movements into electronic pulses. At the end of this tutorial you will be comfortable with using an Rotary Encoder for your projects. We will also interface it with Arduino and control the value of an integer by rotating the Encoder and display its value on a 16*2 LCD screen. In this article we will learn about the different types of Rotary Encoders and how it work. ![]() When the knob of the Encoder is rotated it rotates in form of small steps which helps it to be used for stepper/Servo motor controlling, navigating through a sequence of menu and Increasing/decreasing the value of a number and much more. ![]() It looks more like a Radio potentiometer but it outputs a train of pulses which makes its application unique. A Rotary encoder is an input device which helps the user to interact with a system.
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