Signal Input/Output

Unified driver for the the MCP23S08 SPI expander
It extends board GPIO with 8 pins. Every pin can be inputs or output

Author: Plamen Kovandzhiev

Maintainer: KMP Electronics

Read the documentation


This library is compatible with all architectures so you should be able to use it on all the Arduino boards.


To use this library, open the Library Manager in the Arduino IDE and install it from there.