Control Any Devices Using Raspberry PI and PCF8574, Relay Module

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 h…By: adachsoft

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Buy a Raspberry Pi Compute Module 3 on eBay

There are two versions of Compute Module 3 available. The first has a BCM2837 processor clocked at 1.2GHz with 1GByte RAM and 4Gbytes of on-module eMMC flash. The second is the “Compute Module 3 Lite” (CM3L) which has the same BCM2837 and 1GByte of RAM, but with an SD card interface.