Smart doorbells can snap a photo of whoever rings the bell, making it so you can screen all those visitors you get throughout the day. Over on Instrutables, Naran shows you how to build one with a Raspberry Pi.
Smart doorbells can snap a photo of whoever rings the bell, making it so you can screen all those visitors you get throughout the day. Over on Instrutables, Naran shows you how to build one with a Raspberry Pi.