| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| kevinvivergy | "Ahhh I see. And it looks like both ways showed that there is a big plume of particulates coming out of the rock quarry that dissipated over the rig..." | Read more » | over 8 years ago | |||
| mathew | "the authors did two levels of survey-- first the 6 minute 'snapshots' and then they used that to determine where to place passive monitors for long..." | Read more » | over 8 years ago | |||
| kevinvivergy | "Wow that is super interesting. That would definitely cover the variation over space... but what about if the levels vary over time in each particul..." | Read more » | over 8 years ago | |||
| mathew | "hah! school networks are always a problem. I posted a note recently on hotspot identification, the first stage of which involved a systematic surv..." | Read more » | over 8 years ago | |||
| kevinvivergy | "Thanks @mathew! Has certainly been an adventure. Only consistent issue has been school internet security protocols- they treat the Raspberry Pi as ..." | Read more » | over 8 years ago | |||
| mathew | "I'm revisiting your note, just want to say again how cool this is! great to see you're still up and posting data. " | Read more » | over 8 years ago | |||
| nicholas | "I came across this article about testing the ShinyeiPPD42 in a laboratory environment. I think their evaluation is very insightful and encouraging..." | Read more » | over 8 years ago | |||
| philrosenberg | "I work with scientific dust monitors and have written and published calibration protocols for them. I have been intrigued by these low cost sensors..." | Read more » | over 8 years ago | |||
| mathew | "Also see @Damarquis's note on using MaxEntropy https://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-threshold-and-saving-result..." | Read more » | over 8 years ago | |||
| mathew | "I want to note that while Open Pipe Kit development continues, running this comparison has been a low priority since AQICN is running effectively t..." | Read more » | almost 9 years ago | |||
| mathew | "Wisconsin watch railway map: " | Read more » | almost 9 years ago | |||
| mathew | "I'm writing up an introduction to particles in the air right now (rough draft), and one of the questions I wanted to answer was about naked eye obs..." | Read more » | almost 9 years ago | |||
| nicholas | "This is an amazing and incredibly useful page! Thanks all! Though there is one thing I'm confused about. I've been working with the Shinyei PPD4..." | Read more » | almost 9 years ago | |||
| MeganKierstead | "@schroyer Putting together my own DustDuino now and heads up, the personal Xively data hosting is buggy as all hell now. Can't even get past creati..." | Read more » | almost 9 years ago | |||
| kevinvivergy | "Yeah I was thinking the same with the paint, introduces another source for pollutants. When I called the Dylos folks, they said that the device wi..." | Read more » | almost 9 years ago | |||
| DavidMack | "I was thinking you could expose the intake to ambient temperature in winter and by heating the enclosure you'd be warming the instrument and air in..." | Read more » | almost 9 years ago | |||
| kevinvivergy | "@Davidmack all good thoughts, thanks for the detailed response. -The big challenge with intake thing is that, if I understand your approach correc..." | Read more » | almost 9 years ago | |||
| DavidMack | "@kevinvivergy great detailed post. I'm not that familiar with the Dylos--haven't handled one--but looking at some photos maybe just cut out holes ..." | Read more » | almost 9 years ago | |||
| kevinvivergy | "Thanks @mathew! Yeah @jeff showed those to me, the AQICN one was pretty straight up too and I just went with theirs because I read their tutorial f..." | Read more » | almost 9 years ago | |||
| mathew | "awesome resources and case! hadn't seen this summary of low cost PM sensors: http://www.aqmd.gov/aq-spec/evaluations#&MainContent_C001_Col00=2 " | Read more » | almost 9 years ago | |||
| mathew | "if you're interested, we made Dylos drivers for Open Pipe Kit for the Pi-- its a flexible platform for pushing data to Phant and any other database..." | Read more » | almost 9 years ago | |||
| jeffalk | "kevinvivergy's referred to website is a great example of technology in the hands of techies. They need to learn that more data doesn't always tra..." | Read more » | about 9 years ago | |||
| kevinvivergy | "@warren @mathew thought this group might enjoy the ongoing testing of another set of low cost PM sensors going on in China! Co-located with the off..." | Read more » | about 9 years ago | |||
| marlokeno | "One possibility in order to get a clearer image is to try using the "threshold" filter in photoshop, or photoshop elements, GIMP, etc. It's helped ..." | Read more » | about 9 years ago |