Hi, we are currently in the process of building a new house and I am deciding on what doorbell to use, since we use Google Home I would like to use Nest Hello aswell, since Ring can’t be integrated with it.
I know that through Nest component I can get the binary sensors to detect motion, but as I understand there is no way to detect the button press, which is most important (for example to turn on lights after 10sec when nobody is home and it is night).
I know that using the Nest Hello puck connected to the chime it is possible to make it ring, but my question is using this feature if I connected a relay instead of a chime, then connect the output switch pins of the relay to the input pins of Raspberry Pi where HA runs, would it be possible to detect this in the HA? Or if the relay is far from the RPi, I think it should be possible to use something like ESP8266 and send HTTP requests to HA via Wifi.
I have read somewhere that inside of the puck there is a Opto MOSFET, so maybe it would be even possible to get something more useful (on digital voltage levels) out of it to even skip the clicky relay.
Have anyone tried anything like this? Or would it even work?