1
Quote from: Alexfish - BaCon Forum
This is first post on PI GPIO
Split from 'pigpio picogpio' and extended from the PI3 gpio thread
In that thread there is a I2C keyboard project using I2C PCF8574 gpio port expander
the following code is how to set up a pcf8574
Set up is per pin IE: so can scan the pins :
BaCon Forum link