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
The Ikea filters I used are FÖRNUFTIG (EPA12 + carbon) and the more affordable UPPÅTVIND (EPA only)
If you get a HEPA filter e.g. from Amazon, I'd recommend buying a reputable brand to make sure you actually get what you're paying for. Philips is trustworthy and seems to have reasonably priced replacement filters (important as you'll be swapping them multiple times a year): https://go.toms3d.org/HEPAmazon
Read the article to this video here:
https://toms3d.org/2024/10/07/3d-prin...
Software and stls for the sensorbox https://www.printables.com/model/9939...
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://go.toms3d.org/PMS5003S (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://go.toms3d.org/SDS011
Bosch BME680 VOC, temperature and humidity sensor https://go.toms3d.org/bme680
SCD40 CO2 Sensor (optional) https://go.toms3d.org/SCD40
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.
Papers and sources referenced:
https://pubmed.ncbi.nlm.nih.gov/35744...
https://pubmed.ncbi.nlm.nih.gov/28165...
https://www.sciencedirect.com/science...
https://journals.sagepub.com/doi/10.1...
https://www.ncbi.nlm.nih.gov/pmc/arti...
https://www.efsa.europa.eu/en/topics/...
Models shown:
Canister set by JamesThePrinter https://www.printables.com/model/9527...
Product links are affiliate links - I may earn a commission on qualifying purchases (at no extra cost to you)
🎥 All my video gear https://toms3d.org/my-gear
I use Epidemic Sound, sign up for a 30-day free trial here http://share.epidemicsound.com/MadeWi...
🎧 Check out the Meltzone Podcast (with CNC Kitchen)! / @themeltzone
👐 Enjoying the videos? Support my work on Patreon! / toms3dp
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