Man uses Raspberry Pi to build actual working cellphone for $158 Ars Technica Raspberry Pi -using tinkerer David Hunt—who previously built a bark-activated door opener for dogs—is at it again with a real, working cellphone powered by the tiny computer and a few other items. “PiPhone” cost Hunt $158 to build with these ..

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Man uses Raspberry Pi to build actual working cellphone for $158 – Ars Technica