| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "maintenance is an issue-- look at these dylos monitors in China building up particulates http://aqicn.org/faq/2013-10-21/dylos-air-particule-conter..." | Read more » | over 10 years ago | |||
| mathew | "I just posted a comment to that article. thanks for pointing it out: @donblair-- the author doesn't seem to understand the terminology in use. Th..." | Read more » | over 10 years ago | |||
| mathew | "@donblair-- the author doesn't seem to understand the terminology in use. The conclusions are based on a misunderstanding of what PM2.5 actually m..." | Read more » | over 10 years ago | |||
| donblair | "Did you see the article AmySoyka posted about the Dylos? http://publiclab.org/notes/Schroyer/06-26-2014/broadcast-dust-readings-from-a-smartphone#c..." | Read more » | over 10 years ago | |||
| chrisbartley | "Let me know if you need help with data conversion and/or uploading. " | Read more » | over 10 years ago | |||
| amysoyka | "Hi there, I was just wondering if you ever debunked the claims by AQICN: http://aqicn.org/experiments/what-is-the-dylos-monitor-actually-measuring/..." | Read more » | over 10 years ago | |||
| mathew | "The Speck team indicates that airflow is a big issue. they're controlling with a fan. If I move the Speck around just a little bit the values cha..." | Read more » | over 10 years ago | |||
| jefffalk | "The graph is wonderful and would be very informative if one could be confident of the story it tells. In all cases of use of particle counters one ..." | Read more » | over 10 years ago | |||
| alxmjo | "Nice work. What sort of fan are you using to draw air across the sensor? Also, if anyone visiting this page would like to do something like this t..." | Read more » | over 10 years ago | |||
| mathew | "you can always try Fluxtream, although I don't know how you get the data in there on windows. actually I do-- make Don do it! " | Read more » | over 10 years ago | |||
| cfastie | "They sure are. Excel opened the ods file without too much trouble, and the timestamps are right there. I was just curious to look at the data. Don ..." | Read more » | over 10 years ago | |||
| mathew | "do you want me to make an .xls file from the .odf file? i'm not sure the date translation will work, but the dates are int he odf I made. " | Read more » | over 10 years ago | |||
| cfastie | "I couldn't get Excel to parse the time stamps either. I averaged every 60 particle counts, so I assume I got a number for every minute. Here is a g..." | Read more » | over 10 years ago | |||
| mathew | "Thanks to Bea at CMU CREATELab for the blog cross-post ! My followup post on moving Speck data into Fluxtream to visualize data. " | Read more » | over 10 years ago | |||
| amysoyka | "Thanks for sharing the know-how. Directional scanning, eh? I shall have to make a query to a few people I know about that one. " | Read more » | over 10 years ago | |||
| cindy_excites | "Thanks for this Mat! Let us know how your scanners testing goes. It might be something interesting for people here in London - air pollution is a b..." | Read more » | over 10 years ago | |||
| mathew | "I found a scanner, the Canon 9000F and 9000F MKII, with an optical resolution of 9600dpi and an interpolated resolution of 19200dpi, or pixels 2.6μ..." | Read more » | over 10 years ago | |||
| stevie | "Neat Mathew! nice work. " | Read more » | over 10 years ago | |||
| eustatic | "Also, just want to repeat that corporate and government types are very sensitive to this kind of data. Even though I am tasked to work on water, I..." | Read more » | over 10 years ago | |||
| eustatic | "cool. My understanding is that, at least for coal dust (=mostly crystalline silica), most particles of interest fall in the PM10 category. GCMoni..." | Read more » | over 10 years ago | |||
| mathew | "Ok. Updated. the situation is better than I thought. A 4800dpi scanner could definitely give straight PM10 measurements, possibly with identifica..." | Read more » | over 10 years ago | |||
| mathew | "Ok-- apparently my math is all wrong. I thought DPI was dots per square inch. this is completely wrong. it is dots that can be placed in a line o..." | Read more » | over 10 years ago | |||
| mathew | "@eustatic in a bit, lets get something working first ;-) @warren A smartphone would definitely work for identifying silica! its just a matter of m..." | Read more » | over 10 years ago | |||
| btbonval | "Not to derail the post, but am I the only one who thinks those pictures look like they were taken from the Hubble telescope? " | Read more » | over 10 years ago |