
I want to connect this unit to my home automation system via a raspberry. The connection between the intercom and the outer camera/doorbell unit is 4 cables; Audio, Video, Gnd, Vcc (12V). The screen unit itself is said to be working on 18V. I was wondering if i could use the GPIO pins of a raspberry to process (probably analogue) audio and video signals of the unit and feed it to domoticz. I haven't opened up the screen unit yet but i believe there's also connection ports for additional units, so maybe i can use them.

I will try to add circuit pics once i open the case... If it succeeds, then it may simply become a smart doorbell. Is there anyone yet who tried the same?