Thank to propose your help to translate. I have ordered a mirror 41.1x71.3 and I took a RPI4 and a microphone. I planned to use this mirror in my bathroom. I don’t want to place a camera because my guests will not like to be recorded in the bathroom. So it will react to voice command and touch. I’m also wondering how to make a frame. For that I will put silicon around the edges to avoid humidity between both the monitor and the mirror. After I will print 3D part to old the monitor and the glass together. The printed part will also extend the width and height to the one of the IR frame. That way I will use silicon to attach the frame to the printed part. That way I will see only the IR frame around the mirror. I hope it will work.
To attach it to the wall I ordered this par.
https://www.amazon.nl/gp/product/B07FP39N8J
I’m wondering if it will be strong enough but at least it seems very flat. Otherwise you cna select any system ‘vesa 100x100’

@marcwa19197 Thank you for the advice about mirror provider. I looked at several venders and it appears that the one you suggested brigla-shop.de has the best price. I just needed to use google translate.
I have also purchased an IR-module 32" from Aliexpress and it works great with the module MMM-Touch. It can detect multiples fingers.
It seems that we will have exactly the same mirror.

I made a new module that I would like to share: https://github.com/CharlesMougenot/MMM-MonitorOnOff-Hue
Where should I post it?

Hi, I have not assembled yet my mirror but I started by buying this 32" monitor:
ViewSonic VX3276-MHD-2 Design Monitor, 80 cm/32 Inch
https://www.amazon.nl/gp/product/B0787WGCXT
It seems to be a good fit to make a 32" mirror because it’s a thin monitor and there is no bezel just an aluminum bar at the bottom which can be easily detached via some screws.
With this monitor it will be rather easy to place a mirror directly against the monitor (i,e without gap).

Hi I’m Charles. I’m electronic engineer who hobbies is 3D printing and robotics. I’m now assembling a magic mirror. Congratulation to this community who succeed to make so many modules working together.