Product OverviewAchieve 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? Accuracy & Reliability: Gold-plated contacts and sturdy construction ensure stable signals with minimal bounce. Versatile Functionality: Combined rotary and push-button outputs let you build compact controls and menus. Plug-and-Play Integration: Standard 5 V logic and common pinout make hookup a breeze. 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!
