https://www.hackster.io/puzzler237/did-you-ever-want-to-have-a-video-doorphone-7c9358
Did You Ever Want to Have a Video Doorphone? - Hackster.io
Recycle your old cellphone to build one and connect it by a browser to your new phone, PC or tablet!. Find this and other hardware projects on Hackster.io.
did you everwant tovideo doorphone