This project is a DIY simple optical rotary encoder with 180 points per rotation and bi directional detection that you can make at home with a 3D printer. This Arduino Rotary Encoder is intended to ...

This library uses a PCF8575 to read the pulses of a rotary encoder. As a PCF8575 has 16 lines up to 5 decoders with a switch can be read over I2C. The PCF interrupt line can be used to detect changes ...