KY-040 Rotary Encoder Module with Push Button Threaded with Nut for Arduino Raspberry Pi ESP32

🔄 KY-040 Rotary Encoder Module Brick Sensor with Push Button – For Arduino & Raspberry Pi

Overview

Enhance your Arduino or Raspberry Pi projects with the KY-040 Rotary Encoder Module — a compact, high-precision input device for menu navigation, volume control, and motor speed adjustment.
Unlike traditional potentiometers, the KY-040 offers endless 360° rotation in both directions and outputs digital pulses for accurate position tracking.
An integrated push-button switch adds an extra layer of interactivity, making this encoder perfect for user interfaces, robotics, and embedded control panels.

⚙️ Key Features

• 🔹 Full 360° rotation – unlimited turns with precise pulse output

• 🔹 Incremental encoder with two-phase quadrature output (A & B channels)

• 🔹 Built-in momentary push-button for resets or menu selection

• 🔹 20 detents (click positions) per revolution for tactile feedback

• 🔹 Durable PCB module with nut & washer or mounting-hole installation

• 🔹 Operates on 3.3 V – 5 V for full compatibility with Arduino, ESP32, STM32, and Raspberry Pi

• 🔹 Compact, easy-to-mount design with clearly labeled pins

• 🔹 High-quality components ensure smooth, long-lasting operation

📊 Specifications

🧩 Applications

✅ Volume or brightness control
✅ Menu navigation for LCD displays
✅ Motor or servo speed control
✅ CNC machine or robotics interface
✅ Encoder-based position sensing
✅ DIY Arduino & Raspberry Pi input projects

📦 Package Includes

• 1 × KY-040 Rotary Encoder Module

• 1 × Nut and Washer Set