LOGISWITCH LS30 IC removes noisy switch bounce induced signals from incremental rotary encoders, while including new functionality to indicate the direction of rotation. The small 8-pin IC (available ...

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 in the position of the encoders or if a switch is pressed. If only 1 ...