HW-040/KY-040 Rotary Encoder Library

KY-040 rotary encoder library for Arduino and ESP8266 devices.

Features

• Callback functions on click and rotate events
• Software debouncing
• Interrupts support

Tested on hardware

• Arduino Uno
• Wemos D1 R2

Wiring

The wiring for UNO/ESP8266 can be as follows :

• Vcc --> 3.3V
• GND --> Ground
• SW --> D7
• DT --> D6
• CLK --> D5

Sample code

Read the *.ino file