Comments

Author Comment Last activity Moderation
warren "OK! After now blocking the B sensor instead, it's accepting A data once more, and hasn't yet flagged the B sensor. Interesting! " | Read more » about 1 year ago
warren "Aha! One day later, my sensor A has been "downgraded"! I'll move the tape to the other sensor and see what happens. " | Read more » about 1 year ago
warren "i'll post more soon, but one is now totally blocked and it shows on the graph, but it's not rejecting the data. I'll let this run for a day. Then ..." | Read more » about 1 year ago
warren "OK, i covered it more thoroughly and will wait a while to report back on what happens. " | Read more » about 1 year ago
warren " OK testing this out now. Here's our sensor, on Cromwell St at our office: https://www.purpleair.com/map?582419|582421#13/41.81161/-71.41883 Note ..." | Read more » about 1 year ago
warren " Hi! This sounds great, thanks for posting!!! " | Read more » about 1 year ago
warren "This is great, thanks @kkoerner -- and interesting to see that they'll flag sensors. I wonder how much two would have to not correlate before it go..." | Read more » about 1 year ago
warren " @julieta @nanocastro have either of you used 2 sensors in your DIY #plantower -based devices? #maca etc? " | Read more » about 1 year ago
warren "And just linking to here, where the wiki page documents the 2 channels, which i would guess are from the 2 sensors? https://publiclab.org/wiki/purp..." | Read more » about 1 year ago
warren "@CBarnes9 @samr @Tomp @OrionAllgaier @wu_ming2 @guolivar @BrandonFeenstra @kkoerner, any thoughts or info to share on exactly what the #purpleair d..." | Read more » about 1 year ago
warren " Here's a good overview from EPA Region 1, New England: https://www3.epa.gov/region1/airquality/pm-aq-standards.html Although it's a bit jargony. " | Read more » about 1 year ago
warren "Thanks for this! I guess you're also implying that the mass distribution also doesn't follow any simple or predictable trends? Like, is there no ge..." | Read more » about 1 year ago
warren " Hi @samr, would you be able to repost your last questions on https://publiclab.org/purpleair#Questions, and we can then try to get the word out a ..." | Read more » over 1 year ago
warren "Ah, and regarding What kind of particulate matter do these sensors work best in (ie they tend to preform worse in traffic-dominant pm than wood smo..." | Read more » over 1 year ago
warren " Hi @nshapiro - these are all good questions, let me try to go through them one by one, thanks! the documentation needs to be vastly improved I'm..." | Read more » over 1 year ago
warren "@mimiss @stevie -- what do you think of these options, and would any of them be interesting for classroom use too? " | Read more » over 1 year ago
warren "Idea 3: You could buy or build a #simple-air-sensor and leave it for a few days in a few different locations, to see if it detects anything, and if..." | Read more » over 1 year ago
warren "Idea 2: the #simple-air-sensor could be used alongside a more expensive device like a #purple-air, to give a more ambient awareness of the readings..." | Read more » over 1 year ago
warren "Idea 1: While kicking off a collaborative session or training on air sensor placement, three or more Simple Air Sensors could be held by different ..." | Read more » over 1 year ago
warren "@wmacfarl also did you do your workshop with these yet? " | Read more » over 1 year ago
warren " Hi @sadieprego - would you like us to send you one of these? " | Read more » over 1 year ago
warren " @nanocastro @cbarnes9 @ag8n @wu_ming2 @bigmit37 might also know a bit about this? " | Read more » over 1 year ago
warren " https://ormantineusa.com/diffusion-tubes/ is in the US! Louise Francis mentioned the lab they work with gets them from Gradko -- https://www.grad..." | Read more » over 1 year ago
warren " Just linking in your excellent question here: https://publiclab.org/questions/wu_ming2/02-02-2019/how-do-i-calculate-error-for-averages " | Read more » over 1 year ago