Latest posts
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For Shits and Giggles: Optimized Sequential Sampling from Multiple Sensors (Arduino)
- February 27, 2021
- technology
By treating sensor sampling as a statistical challenge one can reason about how many samples to take from each sensor given a limited time interval for sampling (eg. 1s). It turns out that 30 samples per sensor is fine, and indeed, even one sample per sensor each second works. But life isn't only about usefulness, read on to follow my messy thoughts and perhaps learn a thing or two along the way.
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Measuring NO2 with a Winsen ZE25-O3 Ozone Sensor
- January 29, 2021
- technology
We set out to measure ozone but ended up getting better results measuring NO2. In the absence of a reference sensor, we correlated our measurements with the closest city air quality monitoring station. We used the correlation as a metric for how well the sensor was performing. Finally, we also combined this with studies about the indoor/outdoor ratio of NO2 to estimate indoor NO2 concentration.
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Air Pollution Primer
- January 15, 2021
- guides
This introduction will teach you important concepts that will help you to protect yourself and your family. The goal is to give you an overview that can serve as a basis for further learning. We'll cover important concepts such as PM2.5, PM10, VOC, ventilation, common air purification technologies and why all of this is important.
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Smarter Kids and Fewer Sick Days Through Clean Air
- December 27, 2020
- guides
The younger you are the more important air quality seems to be, indeed, even before birth air pollution can be harmful. This blog post looks at the relation between air quality and cognitive development, as well as number of sick days in schools.
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Ignorance Isn't Bliss
- December 17, 2020
- guides
Not knowing can indeed help you worry less. But when it comes to the air we breath, we can actually do something about it. Sadly, we recently learnt in a very concrete manner that awareness can save lives. This blog post helps you develop a better intuition about air pollution and give you some concrete advice of how to reduce your and your family's air pollution exposure.
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Large-Scale Outdoor Air Purification
- December 10, 2020
- technology
With the great consequences that dirty air has on people, there's no surprise that experts have attempted to solve it by attacking the problem of pollution from different angles. This blog post is a brief exploration looking at examples of large-scale outdoor air purification.
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It All Starts with a Breath
- December 6, 2020
- personal
Learn what this blog is about as well as some interesting facts about why we all should care about air quality. After reading this you'll have a great idea of what you can expect in the future as well as our taste for including references and general writing style.