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Topic: connect pushbutton and led using I2C (Read 2655 times) previous topic - next topic

Nick Gammon

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i write data to pcf8574p is 0, then read data from it but getting 255(11111111)
i dont know how i can do the above tutorial work for me


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i able to write data on pcf8574p port, but unable to read port data of pcf8574p using wire.h wire library in i2c interface. using arduino uno.


Please do not cross-post. This wastes time and resources as people attempt to answer your question on multiple threads.

Threads merged.

- Moderator
Please post technical questions on the forum, not by personal message. Thanks!

More info:
http://www.gammon.com.au/electronics

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