Luftdaten Stevensson screen

#Luftdata?
I'm part of a Swedish Citizen science projekt [luftdata.se](http://www.luftdata.se) measuring
air particles using a sds011 sensor. It's a branch from the original german projekt [luftdaten.info](http://www.luftdaten.info) where you can read build instructions etc in English.

__(You can of course also use the model to measure to other things then particle measurements, I've printed one identical where I have a BME280, BH1750 and a external tipping bucket for rain thus making my own weather station!)__

You can see a live map of all the particle readings [here](http://deutschland.maps.luftdaten.info/#4/51.67/20.23)

The original case is made of 2 pieces 87° sewer pipes and that's a cheap and sturdy solution but I wanted something that looked a bit better on my wall so I designed this stevensson screen sensor holder. It fits the sds011 sensor and a DHT22/BME280 besides the mandatory nodeMCU/WemosD1

# Stevensson what?
A Stevenson screen or instrument shelter is a