My house was prewired with various onewire temperature, pressure and a VOC sensors that ran through a gateway (sitesage). There is a subscription fee for sitesage, so I was hoping to take advantage of the wiring (twisted pair, cat 5) and pull data into homeassistant with an esp8266.
The sensor gate as far as I can tell powers the onewire sensors and then sends it onto a connected gate via 6 wires. If those 6 wires are an aggregate of everything I’d like to pull the data from there, but any thoughts based on the below schematic how that would work?
Here is a photo of the wiring, although missing is a 9v power supply that is distributed to the 3.3 (or 9v) going to the sensors.
A diagram is available here