@flavito You posted the model type of the LCD panel. So I assume you don’t have a complete monitor but just the naked panel. Hence your question about connecting it to the pi.

What you need is a LCD controller board. I wrote a lot about those in this forum already and I don’t want to repeat myself all the time. So have a look here and here. Maybe use the forum search. You should find all the information you need.

What I can tell you is that your panel is 21.5 inch, FullHD (1920x1080) and it has a 30-pin 2-Channel, 8-bit interface.

You’ll find solutions as cheap as 3-4€ with a bit of hands-on work, 10€ for plug’n’play but a relay is needed if you want to use a PIR-sensor, or 30€ for a board with the needed firmware pre-installed. They all have pros (e.g. price) and cons (custom wiring).

Read a bit and if you have further questions you just ask again. Usually I look at the forum daily or at least every two days.

Disclaimer: I am with no means an expert here. I just went through the same research when I build my mirror.

@e199504 I have the Mirrorpane Chrom Spy from Brigla and although it is a good quality mirror the light transmission could be better (it’s only 2% or 3%). It’s perfectly fine if you don’t have direct sunlight through your windows but usually that’s not the case.

Is your room bright then I suggest going for more like 8% transmission. Let’s see what others might think.

If you just care about turning the TV on and off you could use a relay that triggers the power button of the TV. @cruunnerr made a guide for PIR and relay setup.