Being highly allergic, and not wanting to spend hundreds of euros for a smart filter, I decided print one.
Or at least the thing surrounding the filter...
The filter I used is the Xiaomi Smart Air Purifier 4 Compact Filter which I think is perfect as it cost no more than 30$, and blocks basically everything.
As smart module i went for the Sonoff Basic, which is a 220v remote switch compatible with Google/Alexa.
A fan is needed (no air is gonna move otherwise). I choose one from AliExpress which is maybe a little too powerfull (and noisy) | High Air Volume Fan 120mm (Type C). It has the following specs: 4600RPM / 160CFM / 12V / 1.34A.
Again, probably overkill for a small home filter, so choose whatever 120mm fan you like
To connect the switch to the fan i choose the Adogo transformer 60w, 12v, 5A. There are many other with the same dimensions/specs on both amazon and aliexpress.
Below time and material to print each piece
Inside the Fan&Power and Cover, I have designed holders for the electronic components. I'm including also the 3mf files so you can remove/edit those in case you decide to go for other switch/transformers.
Print Settings
The author marked this model as their own original creation.