--- product_id: 82963381 title: "Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2" brand: "robodo" price: "€ 23.34" currency: EUR in_stock: true reviews_count: 7 category: "Robodo" url: https://www.desertcart.at/products/82963381-robodo-rotary-decoder-encoder-module-ky-040-for-arduino-pack store_origin: AT region: Austria --- # 360° Infinite Rotation Integrated Push Button Switch 20 Pulses Per Revolution (CPR) Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 **Brand:** robodo **Price:** € 23.34 **Availability:** ✅ In Stock ## Summary > 🔄 Elevate your DIY projects with infinite control and precision at your fingertips! ## Quick Answers - **What is this?** Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 by robodo - **How much does it cost?** € 23.34 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/82963381-robodo-rotary-decoder-encoder-module-ky-040-for-arduino-pack) ## Best For - robodo enthusiasts ## Why This Product - Trusted robodo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Robust PCB and brass components guarantee durability through countless cycles. - • **Integrated Push Button:** Add intuitive ‘select’ or ‘confirm’ commands without extra hardware clutter. - • **Seamless 360° Control:** Endless rotation for fluid, uninterrupted input—perfect for dynamic interfaces. - • **Dual-Phase Signal Output:** Two-phase square waves enable precise direction and speed sensing for smarter projects. - • **Precision Feedback with 20 CPR:** Accurate step detection ensures smooth navigation and responsive control. ## Overview The Robodo KY-040 Rotary Decoder Encoder Module is a high-precision incremental encoder designed for Arduino and other microcontroller projects. Featuring 360° infinite rotation, 20 pulses per revolution for accurate step detection, dual output signals for direction and speed sensing, and an integrated push button switch, it offers versatile input options. Built with durable PCB and brass mechanical parts, this module ensures long-lasting performance in interactive control applications. ## Description Description: The ky-040 rotary encoder module, is an incremental electro-mechanical device that converts the angular position or motion of a shaft or axle to digital code. The output of incremental encoders provides information about the motion of the shaft, which is typically further processed in processor / controllers into information such as speed, distance and position. Technical parameters: Parameter value, cycles per revolution (cpr) 20, working voltage 0 - 5v, size 32 × 19 × 30mm, weight 10g. Documents: Schematic, Arduino sample code, bildr tutorial, ky-040 connections to Arduino. Package contents: 1 piece brand new ky-040 rotary encoder module in bubble wrap. Review: Ok - Ok but costly Review: Nice - Nice product ## Features - Incremental Encoder Type: Provides accurate step-by-step rotational feedback, ideal for digital control applications - 360° Infinite Rotation: The knob can rotate endlessly in both clockwise and counterclockwise directions, making it perfect for continuous control systems - Dual Output Signal (A & B): Outputs two-phase square wave signals that allow microcontrollers to detect rotation direction and speed. - Integrated Push Button Switch: A pressable shaft button allows for additional user input like “select” or “confirm” functionality in interface menus - Durable Construction: Built using a strong PCB base and brass mechanical components for long life and reliability. - 20 Pulses Per Revolution (CPR): Provides sufficient resolution for many interactive projects such as volume control or navigation ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Robodo | | Manufacturer | Bombay Electronics | | Country of Origin | China | | Model number | MO50 | | Number of Memory Sticks | 1 | | Item Weight | 400 g | | Product Dimensions | 7 x 5 x 5 cm; 400 g | | Item model number | MO50 | | Item Height | 50 Millimeters | | Item Width | 50 Millimeters | | Included Components | 1 x Rotary Decoder Encoder Module KY-040 | ## Images ![Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 - Image 1](https://m.media-amazon.com/images/I/51VSab1Yu8L.jpg) ![Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 - Image 2](https://m.media-amazon.com/images/I/61CsvtGRCAL.jpg) ![Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 - Image 3](https://m.media-amazon.com/images/I/6170jy9jJnL.jpg) ![Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 - Image 4](https://m.media-amazon.com/images/I/41EO-ksc0nL.jpg) ![Robodo Rotary Decoder Encoder Module KY-040 for Arduino - Pack of 2 - Image 5](https://m.media-amazon.com/images/I/51iw4uw1afL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Ok *by N***H on 2 February 2022* Ok but costly ### ⭐⭐⭐⭐ Nice *by H***L on 29 November 2019* Nice product ### ⭐⭐⭐⭐⭐ Good and working properly *by P***A on 18 September 2019* Good ## Frequently Bought Together - Robodo Rotary Decoder Encoder Module KY-040 for Arduino (Pack of 1) - Aptechdeals Jumper Wires Male To Male, Male To Female, Female To Female/ Breadboard Jumper Wires (40+40+40) - ApTechDeals Breadboard 840 point with jumper wires Set(10+10+10) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/82963381-robodo-rotary-decoder-encoder-module-ky-040-for-arduino-pack](https://www.desertcart.at/products/82963381-robodo-rotary-decoder-encoder-module-ky-040-for-arduino-pack) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-06-03*