---
product_id: 77855470
title: "Robocraze KY-040 Rotary Encoder Decoder Module For boards compatible with Arduino (Pack of 1)"
price: "842 kr"
currency: ISK
in_stock: true
reviews_count: 4
url: https://www.desertcart.is/products/77855470-robocraze-ky-040-rotary-encoder-decoder-module-for-boards-compatible
store_origin: IS
region: Iceland
---

# Compact 9.3cm x 6.2cm x 2.4cm form factor 360° precise rotation tracking Incremental digital output for exact control Robocraze KY-040 Rotary Encoder Decoder Module For boards compatible with Arduino (Pack of 1)

**Price:** 842 kr
**Availability:** ✅ In Stock

## Summary

> ⚙️ Turn your projects up a notch with precision and style!

## Quick Answers

- **What is this?** Robocraze KY-040 Rotary Encoder Decoder Module For boards compatible with Arduino (Pack of 1)
- **How much does it cost?** 842 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/77855470-robocraze-ky-040-rotary-encoder-decoder-module-for-boards-compatible)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Small footprint and just 50g—engineered to fit effortlessly into your sleek setups.
- • **Versatile Motor Control:** Perfect for stepper and servo motors, unlocking advanced automation projects.
- • **Dynamic Direction Detection:** Instantly sense rotation direction to power intuitive user interfaces.
- • **Precision at Your Fingertips:** Track every twist with 360° rotation accuracy for flawless control.
- • **Seamless Arduino Integration:** Plug-and-play compatibility with all Arduino boards for rapid prototyping.

## Overview

The KY-040 Rotary Encoder Decoder Module is a compact, incremental rotary input device designed for Arduino-compatible boards. It accurately detects rotation angle and direction, providing digital signals ideal for controlling stepper and servo motors or digital potentiometers. Lightweight and easy to integrate, it transforms angular motion into precise digital data, empowering innovative DIY electronics and automation projects.

## Description

This is a pre-wired and waterproofed version. Handy for when you need to measure something far away or in wet conditions. While the sensor is good up to 125‚°c the cable is jacketed in pvc so we suggest keeping it under 100‚°c. Because they are digital, you don't get any signal degradation even over long distances these 1-wire digital temperature sensors are fairly precise (‚±0.5‚°c over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. They work great with any microcontroller using a single digital pin and you can even connect multiple ones to the same pin, each one has a unique 64-bit id burned in at the factory to differentiate them. Usable with 3.0-5.0v systems.

Review: Good product - This is an incremental rotary encoder. You can find documentation on KY-040 online. The knob also acts as a tactile switch when pushed. The packaging is a little flimsy but the product was received in good condition. Interfacing with Arduino is simple.
Review: Workable - NICE PRODUCT

## Features

- The Rotary Encoder Module Brick Sensor is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in.
- The KY-040 Rotary Module is a great device for stepper and servo motor control. You could also use it to control devices like digital potentiometers.
- The rotary encoder decoder 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 rotary module 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.
- Package Includes: 1 x KY-040 Rotary Module Encoder Decoder

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Robocraze |
| Manufacturer | Robocraze |
| Country of Origin | China |
| Model number | RC-A-4105 |
| Number of Memory Sticks | 1 |
| Item Weight | 50 g |
| Product Dimensions | 2.4 x 6.2 x 9.3 cm; 50 g |
| Item model number | RC-A-4105 |
| Item Height | 9.3 Centimeters |
| Item Width | 6.2 Centimeters |

## Images

![Robocraze KY-040 Rotary Encoder Decoder Module For boards compatible with Arduino (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/51RyBehH2lL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by A***D on 27 August 2020*

This is an incremental rotary encoder. You can find documentation on KY-040 online. The knob also acts as a tactile switch when pushed. The packaging is a little flimsy but the product was received in good condition. Interfacing with Arduino is simple.

### ⭐⭐⭐⭐⭐ Workable
*by A***T on 4 July 2019*

NICE PRODUCT

### ⭐ Poor quality...no quantity control
*by V***M on 17 August 2019*

I order 2 no.s of the rotary decoder for a project, only god know who are selling these material, do they even check what they are packing n selling... Amazon this kinda experiences are increasing with these type of items.. Either the price is toohigh or we are getting something that is too poor in quality or either not functional

## Frequently Bought Together

- Robocraze KY-040 Rotary Encoder Decoder Module For boards compatible with Arduino (Pack of 1)
- Robodo UNO R3 SMD Board compatible with Arduno Development Board with USB cable

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-10*