Jeff Geerling wrote a blog post and made a nice video about the AirGradient DIY assembly and his integration with his Raspberri Pi.
I can really recommend everybody to watch his video and read his blog post:
https://www.youtube.com/watch?v=Cmr5VNALRAg
https://www.jeffgeerling.com/blog/2021/airgradient-diy-air-quality-monitor-co2-pm25