Control Any Devices Using Raspberry PI and PCF8574, Relay Module #piday #raspberrypi @Raspberry_Pi

Shared by adachsoft on Instructables:

This guide shows you how to use PCF8574 with Raspberry PI. The PCF8574 is a 8 bits I/O port expander that uses the I2C bus. To the PCF8574 I will connect the relay module, this will allow control of the electrical device from the Raspberry PI. I will also show an example how to write a program to handle PCF8574 in C++ on Linux.

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