| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "excellent suggestion, thanks for pulling that up! On a brief review, it confirms our experience that PM10 is probably the smallest size we can rel..." | Read more » | over 9 years ago | |||
| mathew | "8.5"x11" PDF of this page for printing: _Deploying_Passive_Particle_Monitors-full.pdf PDF made from the Wiki according to these instructions. " | Read more » | over 9 years ago | |||
| acenchase | "This is very interesting. May I suggest checking out the guide published by NIST which has some guidelines for performing image analysis by SEM in..." | Read more » | over 9 years ago | |||
| mathew | "@Damarquis has notes on using ImageJ in windows and on thresholding: http://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-thresh..." | Read more » | over 9 years ago | |||
| tomtobback | "Hi @Willie, thanks a lot for sharing your excellent work. I used your example sketch for my Dustduino with a ESP8266 wifi module, posting to emoncm..." | Read more » | over 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 » | over 9 years ago | |||
| liz | "hey @jeff Laut! great to hear from you :) what sensitivity do you need on your particular matter sensors? " | Read more » | over 9 years ago | |||
| marlokeno | "It is possible the wikipedia article on Reynolds numbers might help- https://en.wikipedia.org/wiki/Reynolds_number At any rate, the article does g..." | Read more » | over 9 years ago | |||
| warren | "Or try to get them all on the same graph? " | Read more » | over 9 years ago | |||
| warren | "I pasted Grapherate live graphs for 4 sensors Mathew set up into this page: http://publiclab.org/wiki/open-air -- not sure if these are those used ..." | Read more » | over 9 years ago | |||
| warren | "Very cool! Say hi for me if Jen Osha or Rob Goodwin are still at CRMW! We did these maps way back in 2010: http://publiclab.org/map/black-mountain..." | Read more » | over 9 years ago | |||
| marlokeno | "There is an article in "Aeolian Research", Dec. 2014, entitled "The size distribution of desert dust aerosols and its impact on the Earth system." ..." | Read more » | over 9 years ago | |||
| jeffalk | "You probably know about the EPA site with monitoring data around the Chicago coke facilities. The EPA data could be used to compare to whatever dat..." | Read more » | over 9 years ago | |||
| liz | "This is incredible work!!!! You guys are awesome! " | Read more » | over 9 years ago | |||
| jeffalk | "It's my understanding that the Dylos is the only monitor of those mentioned that is calibrated by its manufacturer. That implies that some comparis..." | Read more » | over 9 years ago | |||
| liz | "@willie check this out! " | Read more » | over 9 years ago | |||
| DavidMack | "I think you just need a bigger filter or a smaller fan and it will work fine. I don't see much advantage in making an adapter plate to make these t..." | Read more » | over 9 years ago | |||
| danbeavers | "That is fairly cheap and apparently readily available. I would think that 3D printing the corner transitions would be the best thing. It would e..." | Read more » | over 9 years ago | |||
| Melissa | "@danbeavers the HEPA filter I found came in a pack of two for about $45 online at Walmart. So I guess about $20 each. Pretty inexpensive, and it is..." | Read more » | over 9 years ago | |||
| Melissa | "thank you @nshapiro " | Read more » | over 9 years ago | |||
| warren | "@chrisbartley has posted about the Speck on this site. Hi Chris! Melissa's developing a DIY filter that might interest you. " | Read more » | over 9 years ago | |||
| danbeavers | "What is the source for the HEPA filter? Isn't that an expensive item? " | Read more » | over 9 years ago | |||
| nshapiro | "Maybe try Bea, she does community outreach there https://github.com/beadias or try info@specksensor.com " | Read more » | over 9 years ago | |||
| Melissa | "@nshapiro No we have not been in touch with them. Do you have anyone there in mind that I could contact? I would love to see their results. " | Read more » | over 9 years ago |