FREE SHIPPING ON ALL ORDERS OVER £20

60 DAY HASSLE-FREE RETURNS

Rotary Encoder Module

Regular price £2.69
(inc VAT)

Delivery and Shipping

Order Processing

  • Orders are typically dispatched within 1-3 working days.

Delivery Options

  • Royal Mail 48: £1.50 on orders up to £20.
  • Royal Mail Tracked 48: Free on orders over £20.
  • DPD Next Day: Free on orders over £50 or £6.99.
  • International Shipping: Available at checkout.

You’ll receive tracking details as soon as your order ships track your order here. For full details, please see our Shipping Policy.

Free Returns

Buy with confidence. If you're not completely satisfied with your purchase, you can return eligible items within 60 days of delivery. Products must be unused, in their original condition and packaging, and accompanied by proof of purchase.

No hassle if there's a problem. If your item arrives damaged, defective, or incorrect, simply get in touch and we'll work quickly to make it right.

Simple returns, fast refunds. Once your return has been received and inspected, approved refunds are issued to your original payment method. View our full Refund Policy for complete details and exclusions.

Rotary Encoder Module

Rotary Encoder Module

£2.69

Product Overview
Achieve smooth, precise rotational input in your projects with the KY-040 Rotary Encoder Module. Compact, reliable, and easy to integrate, this module delivers high-resolution position sensing for robotics, automation, user interfaces, and more perfect for hobbyists, students, and professionals.


Key Features & Benefits

  • Ultra-Compact Design
    • Module dimensions: 31 × 19 × 29 mm fits neatly into tight enclosures and PCBs.
  • High-Resolution Feedback
    • 20 pulses per revolution plus push-button switch enable accurate position tracking and selections.
  • Wide Compatibility
    • Operates at 5 V logic, works seamlessly with Arduino, Raspberry Pi, ESP8266/ESP32, and most microcontrollers.
  • Robust & Trustworthy
    • Industrial-grade mechanical encoder with gold-plated contacts for minimal jitter and long service life.
  • Adjustable Sensitivity
    • Tweak the pull-up resistor or debounce logic in software to match your project’s responsiveness needs.
  • Integrated Push Button
    • Built-in push-switch allows you to detect clicks in addition to rotation ideal for menu selection and parameter adjustment.
  • Quick & Easy Wiring
    • Standard 5-pin header (GND, +5 V, DT, CLK, SW) simplifies connections and reduces prototyping time.

Technical Specifications

Parameter Specification
Operating Voltage 5 V DC
Output Signal Quadrature (A/B) + Push-button (SW)
Pulses per Revolution 20
Contact Material Gold-plated
Mechanical Life ≥ 100,000 cycles
Operating Temp. Range –20 °C to +70 °C
Module Size 31 × 19 × 29 mm
Pinout GND, VCC, DT (A), CLK (B), SW

Ideal Applications

Application Benefit
Robotics Control Precise joint and wheel position feedback
Menu Navigation Intuitive user interfaces on LCD/OLED screens
Volume/Parameter Tuning Smooth audio and CNC parameter adjustments
Stepper Motor Homing Reliable zero-position detection
Home Automation Adjust lighting levels, thermostat settings
Educational Kits Teach quadrature decoding and embedded I/O

Package Contents

  • 1 × KY-040 Rotary Encoder Module

Why Choose the KY-040?

  1. Accuracy & Reliability: Gold-plated contacts and sturdy construction ensure stable signals with minimal bounce.
  2. Versatile Functionality: Combined rotary and push-button outputs let you build compact controls and menus.
  3. Plug-and-Play Integration: Standard 5 V logic and common pinout make hookup a breeze.
  4. Durable Design: Rated for over 100,000 rotations, it’s built to withstand extended use.

Enhance your next project with the precision and flexibility of the KY-040 Rotary Encoder Module. Order now and add intuitive, high-resolution control to your designs!