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Air quality station

For discussion of DIY weather equipment - sensors, accessories, improvements to existing kit etc
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HansR
Posts: 2201
Joined: Sat 20 Oct 2012 6:53 am
Weather Station: Davis Vantage Pro 2+
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Location: Wagenborgen (NL)
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Air quality station

Post by HansR »

Progress with another of my projects is steady but very slow, nevertheless I reached a point where I think I can publish what I want and where I am going.
Having a weather station makes one look at the atmosphere but also at what is IN the atmosphere. Especially where I live where smog conditions may occur, where chemical industry is not too far away and where farming of chicken, pigs and cows sometime creates unbearable breathing conditions (and no, that is not healthy outside agricultural air).

When I once called the environmental service, about (agricultural) industrial air pollution, they were unwilling to take the complaint and told me to jump in the car and look for the factory causing the pollution (yes, they did).

So, as a result I decided to make an environmental station beside the weather station. Progress is slow, buying stuff in China, corona, life and other things. But anyway... I wanted to use the RPi and program in C# to keep the development environment not too different. This made it difficult to select a library but finally I got somewhere: I now use RapberrySharp (which will soon become obsolete for another IoT library (with the same author cooperating).

The photo's show the basic setup: an SHT31 (i2c) and a PMS1003 particle sensor (serial) on breakout boards and the breadboard configuration.
The output is Cumulus-like in ascii as you can see: date/time, temperature, humidity, PM1, PM2.5, PM10 (standard particle) and PM1, PM2.5, PM10 (atmospheric).

Now looking for measuring analog gas sensors (which the RPi does not do standard) and an independent cheap outside solar power supply. All to be bought in China I assume, though some parts come from England, USA and the Netherlands. Probably all made in China ;)
Don't expect follow-up soon :lol:

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Aantekening 2020-08-24 104253.png
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Last edited by HansR on Mon 24 Aug 2020 9:37 am, edited 1 time in total.
Hans

https://meteo-wagenborgen.nl
Cumulus build 3132 ● Davis Vantage Pro 2+ ● RPi 3B+ ● Raspbian 5.10.17-v7+ ● Mono 5.18.0.240

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rogerthn
Posts: 340
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Weather Station: Ecowitt GW1000/GW1003
Operating System: Raspberry Pi OS Lite Buster
Location: Trollhättan Sweden
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Re: Air quality station

Post by rogerthn »

Inspiring :!:
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ConligWX
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Weather Station: Davis vPro2 Plus w/DFARS
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Re: Air quality station

Post by ConligWX »

nice. did you go for the BME280 or the BME680 (VOC sensor too)
Regards Simon

https://www.conligwx.org - @conligwx
Davis Vantage Pro2 Plus with Daytime FARS • WeatherLink Live • Davis AirLink • PurpleAir PA-II-SD • CumulusMX •

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HansR
Posts: 2201
Joined: Sat 20 Oct 2012 6:53 am
Weather Station: Davis Vantage Pro 2+
Operating System: Raspbian GNU/Linux 10 (Buster)
Location: Wagenborgen (NL)
Contact:

Re: Air quality station

Post by HansR »

ConligWX wrote:
Mon 24 Aug 2020 9:20 am
nice. did you go for the BME280 or the BME680 (VOC sensor too)
No I did not. So many sensors.... any reason why these two (apart from the i2c interface)?
And for the gas sensors I'll probably settle for a selection of the MQ series as they are more specific (VOC is not specific enough).
Hans

https://meteo-wagenborgen.nl
Cumulus build 3132 ● Davis Vantage Pro 2+ ● RPi 3B+ ● Raspbian 5.10.17-v7+ ● Mono 5.18.0.240

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