dust-monitoring
dust-monitoring


Author Comment Last activity Moderation
johnb1003 "@warren I actually did not create that list / documentation. However, once I get a functioning air sensor I do planning on creating similar documen..." | Read more » almost 4 years ago
zengirl2 "This looks great—also looks like others have faced similar issue with 8266 and Shinyei sensor just through googling. Here’s one example (although s..." | Read more » almost 4 years ago
warren "Ooh, i love the very succinct bill of materials with links and prices! Great documentation! Did you write that documentation? Copying it in here fo..." | Read more » almost 4 years ago
warren "Hi, @JuanfraAlvarez - what is the mapping site you're using? Would you be interested in adding a layer to maps across PublicLab.org? We're compilin..." | Read more » over 4 years ago
warren "Collecting notes on different sensors here! https://publiclab.org/q/15751 " | Read more » over 4 years ago
mathew "You can see more about the shape descriptors for each particle here: https://publiclab.org/notes/mathew/09-19-2015/using-imagej-to-process-passive-..." | Read more » over 5 years ago
mathew "The image analysis creates: perimeter of each particle area of each particle circularity of each particle Circularity is the ratio between the..." | Read more » over 5 years ago
warren "Hi! Just re-reading, is it right that the image analysis produces (as it's complete output): perimeter of each particle area of each particle ..." | Read more » over 5 years ago
xose "Hi @jeffalk! Thanks for your help! That's not a basic question. That's in fact the kind of answer we've received from Shinyei, that every sensor ha..." | Read more » almost 6 years ago
jeffalk "Please excuse this basic question but what makes you think that all such devices should calibrate with the same resistance? You've shown that for s..." | Read more » almost 6 years ago
JuanfraAlvarez "I have just found this: http://takingspace.org/wp-content/uploads/ShinyeiPPD42NS_Deconstruction_TracyAllen.pdf "In the two that I tested, VR3 was ..." | Read more » almost 6 years ago
JuanfraAlvarez "thanks @warren, that post (pdf of field calibrations) is the reason we changed the sampletime to 3600000ms (1h) as this guys have tested its in ho..." | Read more » almost 6 years ago
warren "Awesome post and good questions! I did find this interesting post w some possibly helpful info: https://publiclab.org/notes/Willie/04-01-2014/fie..." | Read more » almost 6 years ago
JuanfraAlvarez "Here the PM10 (and NO2) Levels this afternoon. " | Read more » almost 6 years ago
JuanfraAlvarez "If you want to check the station we are going to be using as reference, its exactly the one circled in the image, you can check it in this link htt..." | Read more » almost 6 years ago
imvec "Found out that seedstudio folks have this image in the documentation but no value... https://raw.githubusercontent.com/SeeedDocument/Grove_Dust_Sen..." | Read more » almost 6 years ago
mathew "Followup on automating this process https://publiclab.org/notes/SimonPyle/05-13-2016/automating-imagej-for-particle-image-analysis " | Read more » over 6 years ago
nshapiro "Hi @bdebaque sounds interesting! Do you know at what altitudes pm 2.5 measurements remain relevant for surface level exposure? If so I'd love to k..." | Read more » over 6 years ago
bdebaque "Thanks for the idea, here is a book worth reading: Aerosol Measurement: Principles, Techniques, and Applications publié par Pramod Kulkarni,Paul A..." | Read more » over 6 years ago
mathew "the airflow issue may be solvable with a reciprocating pump. We've been playing with AC pumps, you probably would need a DC pump and some good pow..." | Read more » over 6 years ago
mathew "I'm working on creating a spreadsheet out of these equations. @Marlokeno it looks like I'm going to use Sutherland's gas law along with average te..." | Read more » almost 7 years ago
mathew "@Damarquis has notes on using ImageJ in windows and on thresholding: http://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-thresh..." | Read more » almost 7 years ago
marlokeno "It is possible the wikipedia article on Reynolds numbers might help- https://en.wikipedia.org/wiki/Reynolds_number At any rate, the article does g..." | Read more » almost 7 years ago
marlokeno "There is an article in "Aeolian Research", Dec. 2014, entitled "The size distribution of desert dust aerosols and its impact on the Earth system." ..." | Read more » almost 7 years ago