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ESP8266_MCP23S17

See in Github
2015-04-24

ESP8266 Library for the MCP23S17 SPI 16bit I/O Expander

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ESP8266 Microchip MCP23S17 Driver

Supports the Microchip MCP23S17 SPI I/O expanders.

Enables the use of up to 128 additional GPIO pins through the SPI bus.

Supports up to 8x MCP23S17 (16 GPIO) chips on the one SPI bus for a total of up to 128 GPIO pins.

Mixing MCP23S08 and MCP23S17 chips on one bus is not currently supported.

Requires my SPI driver: https://github.com/MetalPhreak/ESP8266_SPI_Driver

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    Reviews

    1 (1)
    Avatar
    user_NNF2jaQF
    2025-04-17

    The ESP8266_MCP23S17 by MetalPhreak is a brilliant tool for IoT enthusiasts! Its seamless integration and reliable performance make it a must-have for any ESP8266 project requiring extended GPIOs. The comprehensive documentation on GitHub ensures that even beginners can get started quickly. Highly recommended!