It's tough being a dog. Sometimes your owners don't realize you're only barking because nature calls. Damn. If only a dog could reach the door handle. In David Hunt's house, dogs don't need thumbs to open doors. His Pi-Rex project allows his dog to open a door with a bark.
Pi-Rex uses a Raspberry Pi microcomputer with a noise-detector circuit to pick up the barks, and a motion detector to unlock the door. Now, David's dog can go outside whenever she needs. This could also be useful for guide dogs who help their owners navigate the home. Training your dog to actually use it is another matter, though.
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