Don't breathe this!
Thanks to Sunlu for sponsoring a part of this video! Check out their resin and filament options at https://go.toms3d.org/sunlu
Parts and sensors used:
ESP32 WROVER https://go.toms3d.org/WROVER
ESP32 breakout https://go.toms3d.org/ESPbreakout
2.4" LCD https://go.toms3d.org/24lcd
PMS5003S particle + formaldehyde sensor https://s.click.aliexpress.com/e/_DEuPrN9 (make sure you actually get the "S" variant if you want the formaldehyde sensor - they're a bit hard to find)
SDS011 particle sensor https://s.click.aliexpress.com/e/_DFEQAQ7
Bosch BME680 VOC, temperature and humidity sensor https://go.toms3d.org/bme680
ScioSense ENS160 VOC sensor https://go.toms3d.org/ENS160
MQ-7 CO sensor https://go.toms3d.org/MQ-7
...modified with these instructions https://devices.esphome.io/devices/MQ-7
I also used an SHT40 temperature and humidity sensor in the front, but it is noticeably inaccurate. I'm currently trying a AHT21 as a replacement.
ESPHome config for the ESP32 https://toms3d.org/wp-content/uploads/2024/09/sensorbox-config.txt (adapt it your hardware and preferences)
Papers and sources referenced:
https://pubmed.ncbi.nlm.nih.gov/35744939/
https://pubmed.ncbi.nlm.nih.gov/28165927/
https://www.sciencedirect.com/science/article/pii/S0160412018323663?via%3Dihub#t0010
https://journals.sagepub.com/doi/10.1177/0192623307313011
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5791918/
https://www.efsa.europa.eu/en/topics/topic/bisphenol
Models shown:
Canister set by JamesThePrinter https://www.printables.com/model/952755-canister-set
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