Using PCF8574 I2C GPIO Expanders
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:

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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