Adafruit MCP23017 Arduino Library

Signal Input/Output

Arduino Library for MCP23XXX I2C and SPI GPIO port expanders
Arduino Library for MCP23008, MCP23S08, MCP23017, and MCP23S17 I2C and SPI GPIO port expanders

Author: Adafruit

Maintainer: Adafruit

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.