Last Updated or created 2022-07-14
I don’t like cloud enabled devices, except if it is my own cloud!
I bought a Hikvision doorcam, when i researched the diverse doorcams where was a hikvision which could use a existing doorchime.
When i got mine in, it did not have this feature.
Damn what to do!
Where where several solutions i could think off:
- Use as is .. a no-go for me
- Offload SSL on a proxy and try to reverse engineer the https communication
- Or a hardware solution
I looked at the electronics and tried to find out how things where connected and where things where you could make use of.
I soldered some wires to a little print where the pushbutton was located.
Now i could read the button press, video was easily captured by using a RTSP port.
Does it work? … yes, but i’m not happy about it
Video playback in Zoneminder or VLC
A solution i used before for a generic doorbell
Just read the gpio pin with Arduino or raspberry.
A generic optocoupler will work, just check your resistor.