Aircube: any experience?

I recently stumbled on a cool air monitor: the Aircube. It looks like a nice addition to monitor air quality. Am wondering if anyone already build it? Am especially interested in whether the close placement of sensor will effect their accuracy. More info at: AirCube/README_EN.md at d7e683ff184539f4627f8289c7a9367337eebbd5 · ohdarling/AirCube · GitHub