| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| nshapiro | "I was thinking about this more on my ride home last night. Although you might not be able to say what the particulates are with an inexpensive opti..." | Read more » | about 9 years ago | |||
| nshapiro | "I think you are not going to find a low cost means of speciating, of parsing kinds of particles in the air, other than their size. Speaking of ant..." | Read more » | about 9 years ago | |||
| warren | "Hi - @donblair wrote up a great overview of how particulate air sensing works, here: http://publiclab.org/notes/donblair/05-03-2014/how-do-we-measu..." | Read more » | about 9 years ago | |||
| nshapiro | "I think they are trying a new Indie go go https://www.indiegogo.com/projects/tzoa-wearable-enviro-tracker#/story They've raised 10 grand in the fir..." | Read more » | about 9 years ago | |||
| mathew | "I don't see any images of them running the device-- seems like they demoed it under glass in January. it looks like a non-functional prototype. is..." | Read more » | about 9 years ago | |||
| nshapiro | "have you come across this one before? http://www.mytzoa.com/#homepage do you know what sensors they use? It is maller and cheaper than I would ima..." | Read more » | about 9 years ago | |||
| marlokeno | "This is a wonderful overview-I'm going to have to read it more than once to grasp all of this. I wonder if you could explain more for me as a non-..." | Read more » | about 9 years ago | |||
| warren | "This is a great overview, thanks @mathew! " | Read more » | about 9 years ago | |||
| mathew | "@jefffalk @marlokeno interested in your thoughts on this plan. " | Read more » | about 9 years ago | |||
| mathew | "right above "Step 1" is a paragraph with links to the stores where parts are available. " | Read more » | over 9 years ago | |||
| Paolo | "Hi guys! I'm Italian and i'd like to build a Dustduino... How can I find the components of the Dustduino? " | Read more » | over 9 years ago | |||
| situlla | "Hi mathew, thanks for the directions, I have a question, I get output data in this form; PM10 count,PM2.5 count,PM10 conc,PM2.5 conc 1258.74,-829...." | Read more » | over 9 years ago | |||
| marlokeno | "Markdowm Sorry about that. By the way, the subtitle of the article is The hardest DIY project ever. http://www.popsci.com/diy/article/2011-07/you-b..." | Read more » | over 9 years ago | |||
| mathew | "@marlokeno do you have the link to the DIY SEM? I don't see it in your note. I would love to re-use an old CRT electron gun, but I agree with you..." | Read more » | over 9 years ago | |||
| marlokeno | "What if, in constructing some algorithm to count silica particles, you used a GIMP or photoeditor threshhold editor on the image? The silica would ..." | Read more » | over 9 years ago | |||
| marlokeno | ""Markdown" I'm wondering if silica can be separated from other micro or nano-particulates by dissolving all particles in a solution or series of so..." | Read more » | over 9 years ago | |||
| amysoyka | "I was planning in using a webcam + the lenses from an old CD/DVD drive. (Yes, I like my old CD/DVD drives. ;) ) " | Read more » | over 9 years ago | |||
| marlokeno | "Markdown stray related concern: I remember reading-sorry I can't remember the source-that some pharmaceutical companies were attaching the pharma m..." | Read more » | over 9 years ago | |||
| mathew | "That candle protector is a great way to picture how this sensor works! I think the tiny grate on top of the sensor itself does something similar. ..." | Read more » | over 9 years ago | |||
| mathew | "I'm pretty worried about those particles too. I think we would need an electron microscope to measure them though-- that's a pretty big barrier to..." | Read more » | over 9 years ago | |||
| marlokeno | "Markdown In order to measure particles in sand mine areas of W. Wisconsin/ SE Minn., I noticed from a google/NASA map today that average wind spee..." | Read more » | over 9 years ago | |||
| marlokeno | "2 I am concerned about sub 2.5 micron particles of silica, particles the size of nanoparticles or close to it. Here's a reference to nanotech expo..." | Read more » | over 9 years ago | |||
| marlokeno | "Great work, Matthew, and great job leading dusthack in Menomonie. I'm concerned that the chair of the geology dept. at UW-Eau Claire is claiming t..." | Read more » | over 9 years ago | |||
| mathew | "that reminds me-- I have one of the DIY Bio microscopes i built this summer-- haven't used it for anything-- I'll take a look again. " | Read more » | over 9 years ago |