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time:5h


Author Comment Last activity Moderation
liz "Hey @kevinvivergy it's so great to hear from you! Here's the blue tagging assistance box that you will see when you click on "click here": ...W..." | Read more » over 7 years ago
kevinvivergy "Can do @liz, any in particular you would recommend? Not familiar with the system! " | Read more » over 7 years ago
liz "Hi @kevinvivergy, i have just tagged this note as an activity that others could try as well. I did this by adding the tag activity:open-air. If you..." | Read more » over 7 years ago
kevinvivergy "Thanks @drapoli! Yeah, when I built this thing I had not heard of Purple Air, I am really interested to learn more about it. The AQMD site has done..." | Read more » almost 8 years ago
drapoli "Great discussion and a lot of good ideas. The AQ-SPEC group (www.aqmd.gov/aq-spec) has published results on several PM sensors other than the Dylos..." | Read more » almost 8 years ago
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 » about 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 » about 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 » about 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 » about 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 » about 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 » about 8 years ago
warren "More assembly innovations and simplifications; new note and design coming soon: " | Read more » about 8 years ago
warren "Made the last couple changes -- flipped the tab holes on the bottom flaps, rounded the side bottom flaps: cuvette-frame-9.pdf " | Read more » about 8 years ago
warren "Another update with the tuck-in flaps, slits, and the USB hole and the indexing hole for the potentiometer (although that may be premature). The de..." | Read more » about 8 years ago
dhaffnersr "That is just too cool Jeff! " | Read more » over 8 years ago
warren "Just notes to self; i want to: make the top hole with a swinging flap, for light control redesign the stack to incorporate the LED, Trinket, and ..." | Read more » over 8 years ago
warren "I tried cutting the new version and it worked pretty well: I worked to insert the LED (which could be a laser diode) dial, and Trinket (arduino ..." | Read more » over 8 years ago
dhaffnersr "That's ok, I'm going to try it out anyway. I think this will work for what I am thinking, I am going to mount it in a plastic utility enclosure and..." | Read more » over 8 years ago
warren "I think it will be! But its designed to fit on the 3.0 spectrometry kit, and I think you have the 2.5, no? " | Read more » over 8 years ago
dhaffnersr "Hey Warren, I downloaded the pdf cuvette frame design and I was wondering if I print it out will it be to scale so I can use it as a template? " | Read more » over 8 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 » over 8 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 » over 8 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 » over 8 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 » over 8 years ago