Hackaday Open Sesame Raspberry Pi Style Hackaday The Pi uses two switches to determine the position of the door and relay to trigger the existing garage door opener's operation button. This simple circuit could serve many different purposes, not just opening a garage door.
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Open Sesame Raspberry Pi Style – Hackaday
Hot Hardware Man uses Raspberry Pi to build actual working cell phone 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 cell phone powered by the tiny computer and a few other items.
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Man uses Raspberry Pi to build actual working cell phone for $158 – Ars Technica
Dog owner uses Raspberry Pi to build bark-activated door opener Pi-Rex PCR-online.biz A dog owner has used his Raspberry Pi to build a noise-sensing circuit that opens the door for the canine when it barks. Dave Hunt's project was posted on the Raspberry Pi website, with Hunt saying that the barking of his new dog to be let in and out ..
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Dog owner uses Raspberry Pi to build bark-activated door opener Pi-Rex – PCR-online.biz