Description

The Rotary Encoder Module is a versatile input device used to convert rotational movement into digital signals. Unlike potentiometers, rotary encoders rotate infinitely without mechanical limits, making them ideal for menu navigation, motor control, and parameter adjustments.
It outputs two phase-shifted digital signals (A and B), allowing microcontrollers to determine both direction and step count. Many versions also include a built-in momentary push-button for additional control functionality.

Key Features

Infinite rotation (no end stops)

Direction and step detection

Built-in push button

High accuracy with detents

Easy to interface with Arduino, ESP32, Raspberry Pi

Perfect for menu control and motor speed control

Specifications
Feature Details
Output Quadrature (A & B)
Voltage 3.3V–5V
Steps per Revolution ~20 detents
Push Button Yes
Shaft Type Knurled
Mounting PCB with pins
Applications

Control knobs for electronics

Motor speed and direction control

3D printer menu navigation

Audio volume knobs

CNC control panels

Compatibility

Arduino Uno / Nano / Mega

ESP32 / ESP8266

Raspberry Pi

STM32 / PIC / AVR