aka pollution, dust

Study linking air pollution to mental disorders:
https://www.kcl.ac.uk/news/study-supports-link-between-traffic-related-air-pollution-and-mental-disorders

Calgary air quality:
https://www.cbc.ca/news/canada/calgary/calgary-air-quality-map-ranking-1.4547149

Woodgears (Matthias Wandel) page on dust:
https://woodgears.ca/dust/dylos.html
https://woodgears.ca/dust_collector/index.html

Study of low-cost sensor accuracy:
https://www.hindawi.com/journals/js/2018/5096540/

Experiments on DIY air purifier:
https://news.t0.vc/QZKP
https://dyno-might.github.io/2020/12/15/some-real-data-on-a-DIY-box-fan-air-purifier/


Sensors
=======

Fancy serial one with inlet:
- SDS011
- $17 USD
https://www.aliexpress.com/item/32606349048.html

One Farzad gave me:
- DSM501A
- $4 USD
https://www.aliexpress.com/item/1005001710572424.html

Fancy commercial one:
- DC1100 PRO
- $289 USD

Professional fluke:
- Fluke 985
- $7000 CAD

Good digikey one:
- https://www.digikey.ca/en/products/detail/honeywell-sensing-and-productivity-solutions/HPMA115S0-XXX/7202204
- connector? https://www.digikey.ca/en/products/detail/molex/0151340803/6198165 --- NO
- cable per sensor:
  - 4 x 900-2149211112-ND (pre-crimped lead)
  - 1 x WM1726-ND (connector housing)