WayinTop KY-040 Rotary Encoder w/ Button (5-Pack)
Five KY-040 encoder breakouts — pre-soldered headers, ready for the breadboard.
Best for: Breadboard prototyping
Sensors & Encoders
HiLetgo KY-040 Rotary Encoder Module (5-Pack)
by HiLetgo
★ Best for: Manual jog control & feedback
The classic KY-040 encoder — read rotation and a push-button, perfect for a manual jog control.
Check price on Amazon
Opens Amazon in a new tab — live price & reviews there.
As an Amazon Associate we earn from qualifying purchases. Prices and availability are accurate as shown on Amazon at the time of purchase.
Why we recommend it
The KY-040 is the go-to incremental encoder for Arduino projects. On an arm it has two uses: as a manual jog dial to drive a joint by hand while you test, and as a cheap way to start learning quadrature position sensing. The integrated push-button is handy for cycling modes or homing. Five modules give you one per joint for a multi-knob control panel, or spares. Works with Arduino, ESP32 and Raspberry Pi.
At a glance
| Type | Incremental rotary encoder (KY-040) |
|---|---|
| Quantity | 5 modules |
| Output | Quadrature + push button |
| Works with | Arduino, ESP32, Raspberry Pi |
Guides that use this
Code & electronics
Arduino Robotic Arm Code: Sketches, Library & Examples
Copy-paste Arduino robotic arm code: Servo library setup, sweep tests, potentiometer and serial control, record/playback, smooth motion, and PCA9685.
The conceptsHow Do Robotic Arms Work? Joints, Motors & Control Explained
How do robotic arms work? Learn how joints, motors, controllers and sensors combine to move an arm precisely, explained simply for beginners and DIY builders.
Compare with
WWZMDiB EC11 Rotary Encoder (6-Pack)
Bare EC11 encoders with knob caps — the panel-mount choice for a custom control box.
Best for: Custom control panels