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GPIO stands for General Purpose Input Output and can be used to receive and send digital signals to and from simple electronics from the Raspberry Pi.

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I want to control my RPI from my phone, so I decided that the RPI will host a site. I'm familiar with ROR and I saw that there is GPIO gem (pi piper). Should I work with ROR or learn Django and use python's stable module instead? …
asked Apr 12 '15 by Eric