Compact Smart Air Purifier

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 ](https://www.mi.com/global/product/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](https://sonoff.tech/product/diy-smart-switches/basicr2/), 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)](https://it.aliexpress.com/item/4000163820741.html). 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 transform