Using PCF8574 I2C GPIO Expanders
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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_Mo..._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.

Occasional Linux Kernel Contributor, Avid Wiki Updater, Ask Me About Quartz64
Open Hardware Quartz64 Model A TOSLink Adapter
Pi-bus GPIO Extender For ROCKPro64 And Quartz64 Model A
Plebian GNU/Linux
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