Lifehacker Spot Ghosts with a Raspberry Pi -Powered Ghost Camera Lifehacker The Raspberry Pi -powered camera leans on the idea that ghosts usually show up when it's dark and there's a sudden drop in temperature. So, the Pi monitors temperature, color, and movement, then snaps pictures using the friendly PiNoir infrared camera ..

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Spot Ghosts with a Raspberry Pi-Powered Ghost Camera – Lifehacker