I use three tuners at the same time so I can record multiple channels at the same time. I use a Pi TV hat, plus two USB tuners. I'll have to check which I use and let you know.
I use a hub to communicate. But you could build it without. Tasmota firmware has its own rules based engine letting devices speak to each other without a hub.
I don't have a smart meter, so I hooked up a Shelly EM clamp on the meter tails and it records electric used and shows live usage. It's good to see how power usage changes over the course of the day, plus switching things on and off and watching the change in power.
I have no idea of the moisture content, but you could leave the boards in the room for a few days to acclimate them. Not sure how good that would be though.
Mines above floor radiators. Each connected to a manifold. I use so off mini R2 flashed with Tasmota. On some I use zwave fibaro relays but they are two expensive in my opinion.
Is this a pure lighting circuit? The cable seems to be 2.5mm, although difficult to tell from the pic. It's it's just lighting you could replace with 1.5mm or even 1mm depending on the expected load.
You can use what ever board width you like. Try to keep the thickness the same so it's level at the doorway to the next room. Depending on width two or three screws per board joist is fine. Make sure the fixings avoid any wires or plumbing. You can use tongue tight screws if you want to keep the...
I use a raspberry Pi and TVHeadend software. Converts TV into IP TV and streams over local LAN . You can watch on any LAN connected TV and record to hard drive.
Nope, it's smart. It's runs all by itself, no interaction from me. With a few microwave presence sensors even lowers the temperature when nobody is in a room. I've also added window sensors and if a window opens it shuts off the heating.
I'm going with 12 x 6. I think I'll end up spending more, but I'm going to over engineer everything I'm planning on adding power and ethernet to have a camera and WiFi for a couple of smart switches and sensors.