Rotary Encoder (KY-040) with Arduino | Complete Beginner Tutorial + Code & Wiring

Learn how to interface a Rotary Encoder with Arduino in this complete beginner-friendly tutorial.

In this video, you will learn what a rotary encoder is, how it works, how to connect it with Arduino, and how to detect clockwise and counterclockwise rotation using code. We will also use the encoder’s push button and build a practical project to control a servo motor with the rotary encoder.

In this tutorial, you’ll learn:

✅ What is a Rotary Encoder
✅ Rotary Encoder Working Principle
✅ Incremental vs Absolute Encoder
✅ Rotary Encoder Pinout Explained
✅ Rotary Encoder Wiring with Arduino
✅ Detect Rotation Direction (CW / CCW)
✅ Reading Push Button Input
✅ Arduino Rotary Encoder Code Explained
✅ Controlling a Servo Motor with Rotary Encoder
✅ Beginner-Friendly Arduino Project

This tutorial is perfect for beginners learning Arduino sensors and input devices and will help you build interactive Arduino projects like menu navigation systems, servo controllers, motor control systems, and smart interfaces.

Code and circuit connections are explained step by step for easy understanding.

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Related Tutorial:
✓ Servo Motor Control With Arduino [ https://www.youtube.com/watch?v=uzCuJNgfakA ]

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