Re: Dust / Smog Detection?

> My initial thought was a simple IR LED + photo diode pair to sense
> a reduction in emission

For much lower level detection you might have to think laser over
a distance. http://www.oatleyelectronics.com/ have a variety

Air quality monitors

http://www.aeroqual.com/applications/indoor-air-quality-monitoring

Silicon Chip's CO and CO2 monitor (could be indicative of traffic)

http://www.siliconchip.com.au/cms/A_112013/article.html


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