Hi ;
I will start ferduino build . but I didnt find PCF8575 . Because this product retired.
https://www.sparkfun.com/products/retired/8130
I am searching Sparkfun and ı found this one ( SparkFun 16 Output I/O Expander Breakout - SX1509 )
https://www.sparkfun.com/products/13601
is it possible to use this product ( using different library )
Best Regards