PCF8575 output pin voltage LOW

No problem, glad it's working now. Think about what I said in reply #12 re. github.

The library from Renzo Mischianti is not good. I work well if all pins are output or input. But fails when using a mix of input and output pins.

I replaced it with GitHub - RobTillaart/PCF8574: Arduino library for PCF8574 - I2C IO expander and all my problems was solved.

thehardwareman:
I replaced it with GitHub - RobTillaart/PCF8574: Arduino library for PCF8574 - I2C IO expander and all my problems was solved.

That library is for the pcf8574. Wrong link?

PaulRB:
That library is for the pcf8574. Wrong link?

No, my fault... I mixed up the two chips. Sorry for that.

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