I am trying to run LCD and some inputs over I2C port extenders. I was a bit disappointed to find out that was not as easy as 1-2-3. So I was looking for solutions, so that I can run liquidcrystal library without any modification, unlike what fm did or adafruit. Here is what I came up with, which sho…

About generalizing digitalRead, digitalWrite and pinMode to extender IO

liuzengqiang October 7, 2014, 1:34pm 3

Thanks Rob. I will do the attach detach. It is better.

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