hollow bloom
I've contributed code to support the Panasonic SN-GCJA5 PM sensor. Cheaper, smaller, and more easily obtained from reliable means.
This board supports both PMx003 sensors as well as the GCJA5. Runs off 24VAC or USB-C. 24VAC is a common HVAC voltage, it will let me easily run this in my furnace to monitor air quality.
Design is open source. https://github.com/gcormier/espairqual
Board is in fab now so I'll post some pictures when I receive it!
hollow bloom
sour pendant
Hi @hollow bloom I think your PCB and 3D printed case looks amazing!
My question is, do you have any data from the PMS5003 and the SN-GCJA5 to compare the two?
I want to purchase two accurate dust sensors and use kalman filter to combine the two. Which one should i buy?
hollow bloom
Hi <@305515215540191232> I think your PCB and 3D printed case looks amazing!
Thanks!
I used to have both going but I don't anymore.
Honestly, I think the Panasonic one is preferrable unless you can guarantee you are getting a known-good/genuine PMS. And even then... the Panasonic calibrates itself for age over time.
sour pendant
Thanks, i will consider buying the Panasonic one! BTW are you still selling this board?
