Follow

All you need to build your own little fine dust sensor & outdoor weather station:

- ESP32 micro controller
- SDS011 laser scattering particle sensor
- BME280 temp/humidity sensor
- Jumper wires
- PVC flexible tube
- PVC pipe for protection

You can get all those parts for ~$30.

Instructions: luftdaten.info/en/home-en/

A map of particle sensors:
maps.luftdaten.info/#6/51.385/

@fribbledom
there's also opensensemap.org for measurement publishing, integrated with the luftdaten.info firmware
has no hexagons though :^(

@fribbledom This is something I might do. I would want to throw more stuff into it, like a pressure sensor.

@gudenau

The BME280 actually does have a pressure sensor on board as well. If you want absolute pressure values though, I think it needs to be calibrated for your specific location first.

@fribbledom @gudenau if you wanna be fancy, get BME680 instead, it can also measure VOC for air quality.

@piggo

I'm actually having trouble sourcing the BME680 (for a reasonable price anyway). But yeah, if you can get them, I'd recommend them over the BME280 (which itself is a fantastic sensor, especially for the price).

@gudenau

@gudenau

That's the BME280, though. You can often find them for less than $2.

@piggo

@fribbledom Well I am a fool for trusting the Adafruit search engine then.

@fribbledom Interestingly, there are only a handful of stations reporting in the Americas, and they all look good compared to Europe and Asia. I wonder if that's a sensor problem, location issue, or indeed fewer particulates?

@cs

I guess there really are too few stations in the US to give an accurate picture, but generally speaking:

I would assume that most sensors report accurate values here. The air quality in the denser populated and less pollution-regulated parts of the world is much worse indeed.

@fribbledom
you probably already know about this one, and it's not open source.
purpleair.com/map#1/25/-30
it's also more interesting if it hasn't been raining/snowing.

@cs @fribbledom America is mostly deserts and plains, isn't it? Unless you mean metro area like the east coast.. would imagine there's really cleaner air
Sign in to participate in the conversation
Mastodon

Invite-only Mastodon server run by the main developers of the project 🐘 It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!