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The AC scheduler (Sonoff wireless switch) powers off both the screen and the raspberry PI, because it sits in the power cord that gets splitted with the 12v splitter cable.Laptops are more power heavy than Rasperry PI, still, it shouldn't get too hot to melt the glue. I agree LCD adapters a bit pricey, a cheaper 2nd hand old TFT screen would be better if you need to buy one.

I guess you're talking about the 12v to 5v converter, you can find one like this in aliexpress . The converter takes an 12v input and produces a 5v output, compatible with the Raspberry PI . Let me know if that answers your question. 

You are totally right, I'm using a WLAN adaptor + Micro USB adaptor. You could also use the new Raspberry Pi Zero W which has Wifi. I'll update the description.

I guess you're trying to find a livecam on Liverpool; I couldn't find any on youtube. That page you sent shows you a screenshot every 30 seconds, it's not great, but you can still use it if you open a chrome browser. You could also find a streaming in m3u8, which can be displayed in omxplayer (if it's compatible). I'm not an expert on live streamings, maybe someone else can help you find the video you want. Good luck.

Possibly, at least on an android based tablet, which are easier to customize than IOs devices. If you have an spare tablet, give it a try, all you need is to open youtube or something on startup. You'll loose the remote control option though, that's why I decided to use a raspberry pi instead.

Absolutely, I used recycled components but you're free to buy the components you need to make this work. You'll need to get a very thin and lightweight tv to make it look like a picture frame on the wall (mine is about 1cm deep). You can also use the Chromecast too, but I prefer using a Raspberry PI so I can run scripts and display videos on startup.

Hi Gareth, thanks for you comment. You are right, after a few days I noticed that the video was no longer live. I've tried with multiple urls, like the "embed" you suggested, but livestreamer doesn't like this. I'm updating the URL on the raspberry every 4 or 5 days for now, at some point I might build a script that will find the latest version of the live video on youtube. I'll update the instructable if I come with a better solution, thanks.

Nice, before using these 2 IR sensors, I used a PIR sensor in the middle of the staircase, but it was very unstable. It was even turning itself on when the oven in the kitchen was working (because of the invisible heat wave, I guess).

Sorry, I forgot to select the STL files, I created a extra step with all the downloadble files.