What season do you have in config.js?
I have “current” and it shows the final stands in the 2018 season.
No entries to be seen in the calendar because the new season will start in march …
Maybe you can show your config?
Peter

I use cheap Xiaomi sensors in all rooms in my house, displayed on MM.
Peter

63 and building my second MM.
Peter

@Egnos: one last advice: start with a Raspberry Pi 2B or 3B (not a zero or a 3B+).
I have 5 RPI’s (bought them all secondhand).
A lot of people buy a RPI and don’t know what to do with it.
Peter

You have to make GA (on your cellphone) look for smart things.
Sonoff has an app (eWelink) but there are a lot of smart switches, thermostats and other.
After connecting the Sonoff with the app, it was recognized by GA.
But again: you do not need a MM to make smart things work.
Google home works even better; but building it yourself is a great part of the fun.

I started my MM project about a year ago and it took me a lot of time to make it the way I liked.
Now I am building a second one for my daughter and it takes me much less time.
But it is really a lot of fun to make your own personalized project.
Just try it!
Good luck!
Peter

@Egnos: I think you should just start!
MM is a very funny project!
Buy a Raspberry Pi, SD card, find an old monitor, keyboard and mouse and go!
Burn an image on the SD card and try to get MM running.
You don’t need all the other stuff (you can add it later).
And I will give you some advice: after MM is working, save the config.js file (I saved it on a USB stick).
Then try to add or change a module; is it working: fine!
Is it not working: you still have the working config.js on the USB!

About the Sonoff: you do not need a RPI or MM to maken the Sonoff working.
The Sonoff is hardwired with the gardenlights; it has 1 IP adress with 4 channels.
You can use your cellphone or a 433 Mhz remote to switch the channels.
But I find it more fun to say: “Hey Google, turn on the fountain …”

Another advice: read, read, read, search, read and finally: ask here …

Peter

Turning on the gardenlights and the fountain is done with a Sonoff 4ch pro.
A cheap smart switch.
You can add all kinds of smart stuff to GA (Philips hue, Ikea,etc).

Second question; I think you do not need the Google AIY, but I experienced it to be very easy to setup.
And I bought it very cheap secondhand …
But it is possible to build it yourself (google is your friend).

Peter

@Egnos: I think I made something like you want.
I started with the original Google AIY (https://aiyprojects.withgoogle.com/) and made it working (I have the V1 kit).
After that I installed MM on the same SD card.
GA and MM are working seperately.
So I cannot hide modules with GA, but I can ask a lot of questions and GA answers me in my own language.
I can set timers, ask for appointments in my agenda, turn on the gardenlights and the fountain in my garden pond.
I think it would be possible to set the temperature in the house if I had a smart thermostate (maybe next buy).
Playing songs on youtube or spotify: I did not get it working (I think you need the “real” Google home for that.

I am really fond of my Magic Mirror: it turns on and of by a Pir, shows me a lot of personal information and if I say: “Hey Google, goodmorning” it answers: Good morning, Peter, the time is …, the temperature is … it is going to be a cold day, it is not busy on the road to your work, it will take you … minutes, have a nice day … (all in Dutch = my own language).

Finally I build the RPI, AIY with the original speaker and microphone at the back of an old monitor.
I did not use a mirrorglass because my mirror shows thousands of holidaypictures and behind a mirrorglass they were to hard to see clearly in my vision.
So I mounted a plate of clear glass in front of the monitor.

If you need more information, you can mail me.

I hope this will help you with your project!
Peter

Interesting!
Are MM and GA independend or can you influence MM with GA (like showing or hiding modules)?
I think I made my mirror in the same way.
I have the original Google AIY kit in my MM.
They work independend: I can ask Google any kind of questions, set timers and turn on the gardenlights and the fountain in the pond with my voice.
But I cannot hide or show modules with voice.
I am very interested in integrating MM and GA, but I do not know how.
Peter

Thanks; this was what I was looking for!
My first mirror is a kitchen information screen too.
I will try to make this one too (with a personal touch).
Peter