Could anyone advise of the best way of getting hold of the PCB? Looking at the air gradient webside they provide "Gerber files", do these need to be sent to a PCB manufacturer to create? If so, does anyone have recommendations of which to use? It is something I would like to learn about but I am rather new to.

I ordered like 5 of them the other day from JLCPCB it was like 6 bucks shipped to my place.

I saw this post online, I’ve had the pm2.5 sensor sitting around for a long time…

https://benjamincongdon.me/blog/2021/08/08/DIY-Air-Quality-S...

I built one using these instructions and a ESP8266: https://www.pieterbrinkman.com/2021/02/03/build-a-cheap-air-...

It publishes its data via MQTT, and you can use any system that can subscribe to a MQTT queue to process, display, etc. it.

KiCad for design and JLCPCB or FusionPCB for manufacturing has been good enough for me to go from nothing to a completed board. Yes, gerber files are equivalent of “compiled binary” that you send to a PCB manufacturer to be printed.

The last time AirGradient popped up on HN, the guy who runs it said if you get in contact and ask nicely they might have a spare one to send you.

I confirm he followed up on that. He nicely sent me 2 PCBs after I sent him the shipping fee from Thailand.

Link: https://news.ycombinator.com/item?id=27125763

https://oshpark.com/shared_projects/M6wg5Xzs Actions > Order Board

I've had good experience with jlbpcb in the past, they usually have some deals going around on youtube electronics channels too.

oshpark is what we used in college https://oshpark.com/

$5/sq inch and you get 3 copies of your board