PCB with 3 rotary encoders and a microcontroller. With this board you can connect 3 rotary encoders to your project using a 4-wire I²C cable. The onboard controller will monitor the rotary encoders and make the rotary status available through the I²C bus.

Features:
• 3 rotary encoders with switch
• Onboard controller (AtMega328P)
• Interface by I²C

Usage:
• As I²C slave with 3 rotary encoders. This is the default function and supported by the default firmware.
• As I²C master. You can use the Arduino IDE to write your own firmware. An onboard bootloader is available to load your firmware into the module through a serial port.
• As demonstration to show how rotary encoders work. On-board leds on each contact will light when the corresponding contact is closed.

Full Documentation.

• Schematics
• Board dimensions
• I²C interface

Examples for Arduino programs to use the module.
• API (Application programmers Interface)
• Several example programs