I had a similar DIY project, also using some Alphasense sensors, + some cheaper metaloxide ones. It was somewhat promising, but it needs long-lasting colocation

I had a similar DIY project, also using some Alphasense sensors, + some cheaper metaloxide ones. It was somewhat promising, but it needs long-lasting colocation studies and, after I moved to Sweden, I lost any support from the local authorities and gave up. https://bochovj.wordpress.com/tag/air-quality/ https://bochovj.wordpress.com/tag/air-quality/