KY-040 Rotary Encoder Module

Name: KY-040 Rotary Encoder Module
Brand: Official Hobby Components Online Store | Buy Electronic Kits, Components, Boards, Shields, Modules
SKU: SKU-6fff7274f990
Price: 0.58 USD
Availability: InStock
Rating: 5.0 (5 reviews)

KY-040 Rotary Encoder Module - Main image

$0.58 ~~$0.82~~ In stock

Category: Sensors

Working voltage: 5V
Circle of Pulses: 20
Product Code: HCMODU0063

Diagrams, Pinout and example Sketch available on our support forum.

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Customer Reviews (5.0 / 5 · 5 reviews)

Chloe A. ★★★★★ Oct 20, 2026

The 20 pulses per rotation gives me nice precise control for my Arduino volume knob project. Wiring it up was simple with just 5V and ground, and the example code from the forum had me running in minutes.

Emma V. ★★★★★ Oct 19, 2026

Setup was straightforward with the pinout diagram from the support forum, and the 20 pulses per rotation feel precise for my volume knob project. Works flawlessly at 5V, no jitter or missed steps so far.

Sebastian ★★★★★ Oct 18, 2026

I’ve been using this rotary encoder with an Arduino project and the 5V working voltage was a perfect match. The 20 pulses per circle gave me enough resolution for fine-tuning volume control. The support forum’s example code saved me a ton of setup time.