GitHub - corporealfunk/PCFKeypad: Ardunio library for using matrix keypads with the PCF8574AP I/O expander

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Ardunio library for using matrix keypads with the PCF8574AP I/O expander

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Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
examples/PCFSerial		examples/PCFSerial
PCFKeypad.cpp		PCFKeypad.cpp
PCFKeypad.h		PCFKeypad.h
README.txt		README.txt
keywords.txt		keywords.txt

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PCFKeypad is a library written for the arduino. It allows users of multi-button matrix keypads to utilize the pad with the NXP PCF8574AP I2C I/O expander.

Currently it only supports 4 row, 3 col keypads but could be easily adopted to work with other size/types of pads.

Please read the documentation in the PCFSerial example for wiring instructions.