01-17-2023, 02:21 AM
now it's IIC issue. can you download our A8S relay arduino demo code for a test firstly?
here is our relay output demo , that used PCF8574: https://www.kincony.com/forum/showthread.php?tid=1956
here is our arduino pcf8574 library, you can copy to your library folder to use.
PCF8574_library.zip (Size: 23.8 MB / Downloads: 245)
here is our relay output demo , that used PCF8574: https://www.kincony.com/forum/showthread.php?tid=1956
here is our arduino pcf8574 library, you can copy to your library folder to use.
![ZIP File .zip](https://www.kincony.com/forum/images/attachtypes/zip.png)