I’m late to the party but you could still give it a shot with frigate. I have kinda new hardware intel n100 (no coral) but as far as threads and speed, your old i7 is better according to specs sheets so I’m guessing it will work well enough for a few cameras without coral.
One of the reason for me to upgrade was power draw, specs like yours will consume a lot of energy, has a tdp of 95W while n100 is 6W.
I am mainly reading on iPad due to screen ratio, I’m self hosting yacreader library and use yacreader app (server is free, app is one time payment on iPad, does have an android/windows client but not developed as iOS version). If I remember correctly, I think there is also Panel on ipad that do the same (would need to check). On android, I need to check and can answer tomorrow (almost 1am here), could be cdisplayex but unsure.
i don’t know any on computer but some app offer that on android/ios. i guess they look for some kind of contrast pattern to determine each frame.
Did try and it does work really well on some but not all garphics novel / comics
Does it have access to boot menu? If so, change boot order so it goes to usb first. You will then only need to create a bootable usb stick with Linux on it
The most popular way (and might also be the best) is to use z2m instead of deconz
I’m using home assistant, with mqtt which acts for many things and I get notification in different way depending the needs. Could be home assistant app or telegram or lighting up some light or sending voice messages to a speaker. All notifications are triggered by automations looking at states. Haven’t done it but automation could be re launched automatically until (for exemple) I press a button or responding to telegram message
Never had an mamazon tablet but I guess it has a modified android version like their tv dongle so mostly any “real” android tablet will do, cheapest one would be less reactive but still will works. I had mine on an old Huawei tablet but today I would go for something like Xiaomi pad 6 (don’t think it is worth to get a high end tablet for that purpose), whatever you get disable battery saving functionality for kiosk app and you should be good. As for telemetry/spyware, block it at router level so it will be limited to your local network.