Hi all!
After a long break with some woodwork excursion, I finally finished our main bathroom mirror.

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The mirror is composed of:

Pilkington MirroView 6mm
Raspberry Pi 4B
24" Display BenQ GL2450
Solid-State-Relais (SSR-40DA)

The frame is made of plywood and glued to a black foil, which is attached to the mirror glass.

I use a Hue Tap Dial Switch to control my YouTube module:

Some anecdotes

I’m really satisfied with the end result, despite encountering quite a few setbacks along the way. For example, I should have tested the backlighting more thoroughly before applying the glue onto the frame. I also wanted to make the backplate, which holds the display, removable. Unfortunately, it seems that i used too much glue in the final step, and some of it must have spilled over, unintentionally gluing the backplate as well.

Additionally I also didn’t think about the display’s standby message until I had already assembled the mirror. This resulted to some experiments with a mechanical relay and eventually a solid-state relay, which instantly cuts the display power without any delay or unnecessary notifications.

For the power management I initially planned to use a Doppler microwave sensor (RCWL-0516) as motion sensor. While it worked fine during development, it didn’t function at all behind the mirror glass. As a result, I got rid of it and started developing a module to integrate it with our light switch, which I modified using a Hue Wall Switch module (which itself was also not straightforward since the light switch was coupled with the bathroom ventilator, but that’s a different story…).

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The probably more interesting part

I wanted to keep it simple and only planned to use ~50% of the display since the beginning. Because it’s our main bathroom mirror, i focused on what i really want to see in the morning.

Default Clock module
Default Calendar module (hidden)
MMM-Pir (will propably replace it when it’s not working anymore)
MMM-CalendarExt3Agenda
MMM-OpenWeatherForecast
MMM-DWD-WarnWeather
MMM-Miku
MMM-HueControl
MMM-RemoteYoutube

The last three modules are written by myself, since i was too lazy to search for fitting existing modules or didn’t want to compromise.

Credits

While this project gave me quite a few short nights and several headaches, I had a lot of fun during the research and build. I’m really impressed with how far the main MM² project has come, and I truly appreciate it and everyone that contributed to it.

Special thanks to @spitzlbergerj , i took a lot of inspiration for the frame work from his work and of course all app developers of the modules from above.

Frameless Bathroom Magic Mirror (Hue-controlled)