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+--- Thread: Using PCF8574 I2C GPIO Expanders (/showthread.php?tid=15444)
Using PCF8574 I2C GPIO Expanders - CounterPillow - 12-01-2021
Hi all,
I've begun writing a guide on the wiki on how to use the cheap ubiquitous 8-lane PCF8574 I2C GPIO Expander with the Quartz64 Model A:
https://wiki.pine64.org/wiki/Quartz64_Model_A_using_a_PCF8574
It should also be more generally applicable to other boards, if you adjust the used I2C controller. You don't need to speak any I2C protocol to use this at all; the Linux kernel handles it all for you!
I encourage anyone to edit the wiki article if they find a mistake, and expand the guide as is reasonable. I believe that collaboratively we can produce great guides for the board.