KY-040 – Rotary Encoder Module

KY-040 rotary encoder is a device that generates an electrical signal based upon how much the
rotary input device (knob) is rotated and the direction it is rotating in. It is a position sensor with a knob and can be used to control stepper or servo motors with precision.

Features and Specifications of KY-040 Rotary Encoder

Below mentioned are some of the features and specifications of the KY-040 Rotary Encoder module:

1. Operating Voltage: 5V
2. Mechanical angle: 360 Degrees
3. Output: 2-bit gray code
4. Positions per revolution: 30

Pin Configuration of KY-040 Rotary Encoder

The KY-040 module has 5 output pins. Two of which are for the power of the module whereas, 3 are for the output data of the turns and direction of the knob. The table below describes the pin type and the function of each pin in the Rotary module.