Well, I was just about to brag about my triumphant install in this thread... and immediately realized from the photo in the OP that I had installed the wedge backwards, and that's why it was so janky...
Now I'm back after flipping that bracket over. This whole frustration started when I saw a Nest doorbell on Slickdeals for $75. Looking into it, it seemed it wouldn't connect to
BlueIris, and required an internet connection. Then I found this thread and decided to purchase the Reolink PoE doorbell since it was on sale for the same $75.
What I figured would be 45min of using the existing doorbell wire as a pull string for cat6 ended up being 3 hours of climbing up and down from the attic. The existing doorbell wire happened to be cat 3, which was a pleasant surprise, and the transformer where it connected to was just 2ft from the switch panel in the coat closet. I didn't like that they just slipped 2 of the strands out from behind the wall plate of the electrical outlet, so I decided to move the wire 2 ft to where I pull all my network cables. The cat 3 was nailed down to studs somewhere in the wall, and no amount of pulling would get it loose.
I ended up cutting the cat 3 cable, pulling a short section of cat 6 down to my PoE switch, and splicing them together.
After all that, I had difficulty getting BI to detect the Reolink. You have to enable network settings on the camera that are switched off by default. Then, the detected settings were wrong, so the doorbell wouldn't ring the chime. The default RTSP port is 8000, but BI set it to 8999. I enabled unsecure http, so then it finally detected port 80 for RTSP and the chime started working.
Still can't get BI to use camera triggers for recording, but I might not care since I use BI to trigger everything else. I've got to figure out how to get push notifications on my phone without internet connectivity on the camera. The audio out to the doorbell doesn't work in either BI or the phone app (which I plan to delete at some point).
I'm pleased enough with how well it works at the moment that learning/fixing the issues above will probably wait a long time. I'm exhausted from all the straining on my tiptoes, pulling fiberglass fish rods in cramped spaces, trying not to fall off rafter beams, and finding my way out of the attic in complete darkness when my headlamp battery died (and I didn't have my cell phone as a backup). Didn't fall through the ceiling though, and I have video integration with BI, so I consider that a success.
I shudder to think of all the time spent on these projects lost when I move. Even worse, how screwed my wife would be if I died. No more automatic watering in the garden, no more voice controlled fireplaces, no robotic vacuuming, no controlling the thermostat remotely... she'd have to move into a tiny house and have the cable company figure out how to install internet service.