| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Hi, @JuanfraAlvarez - what is the mapping site you're using? Would you be interested in adding a layer to maps across PublicLab.org? We're compilin..." | Read more » | over 6 years ago | |||
| warren | "What's a good way to determine this? Would it work to set up a test somewhere there is H2S, alongside a calibrated H2S detection technique and comp..." | Read more » | almost 7 years ago | |||
| warren | "For what it's worth, you can buy H2S gas here for $189, but I think I'd think twice about doing so given how toxic it is: https://www.durawear.com/..." | Read more » | almost 7 years ago | |||
| warren | "And @sara noted these glove bags for working with toxic materials: https://publiclab.org/notes/sara/2-6-2012/hydrogen-sulfide-testing-glove-bag " | Read more » | almost 7 years ago | |||
| warren | "Also, not that this sounds ideal, but these two students did some good documentation and work on detecting h2s from bodily sources, so to speak: ht..." | Read more » | almost 7 years ago | |||
| warren | "I see a couple leads here, one by @jschaffr : https://publiclab.org/notes/jschaffr/11-21-2011/controlled-testing-bw-film-hydrogen-sulfide-detecto..." | Read more » | almost 7 years ago | |||
| platteferguson | "So my million dollar question do I buy 3 or 4 inspire 2.0 with extra batteries or go for the new Ebee SQ ag drone for 12-15k with the multi spec wi..." | Read more » | over 7 years ago | |||
| xose | "Hi @jeffalk! Thanks for your help! That's not a basic question. That's in fact the kind of answer we've received from Shinyei, that every sensor ha..." | Read more » | almost 8 years ago | |||
| jeffalk | "Please excuse this basic question but what makes you think that all such devices should calibrate with the same resistance? You've shown that for s..." | Read more » | almost 8 years ago | |||
| JuanfraAlvarez | "I have just found this: http://takingspace.org/wp-content/uploads/ShinyeiPPD42NS_Deconstruction_TracyAllen.pdf "In the two that I tested, VR3 was ..." | Read more » | almost 8 years ago | |||
| JuanfraAlvarez | "thanks @warren, that post (pdf of field calibrations) is the reason we changed the sampletime to 3600000ms (1h) as this guys have tested its in ho..." | Read more » | almost 8 years ago | |||
| warren | "Awesome post and good questions! I did find this interesting post w some possibly helpful info: https://publiclab.org/notes/Willie/04-01-2014/fie..." | Read more » | almost 8 years ago | |||
| JuanfraAlvarez | "Here the PM10 (and NO2) Levels this afternoon. " | Read more » | almost 8 years ago | |||
| JuanfraAlvarez | "If you want to check the station we are going to be using as reference, its exactly the one circled in the image, you can check it in this link htt..." | Read more » | almost 8 years ago | |||
| imvec | "Found out that seedstudio folks have this image in the documentation but no value... https://raw.githubusercontent.com/SeeedDocument/Grove_Dust_Sen..." | Read more » | almost 8 years ago | |||
| Claytonb | "@Artichoke23 - What I have seen in testing is that a red filter will give you much greater contrast and sensitivity in crop vigor. A good example i..." | Read more » | about 8 years ago | |||
| Artichoke23 | "@Claytonb, This is a great post and comparison. I have a couple questions, I'm using the V2 NoIR Raspberry Pi camera and #2007 filter they provide ..." | Read more » | about 8 years ago | |||
| everydayduffy | "Thank you @Claytonb. " | Read more » | over 8 years ago | |||
| Claytonb | "@everydayduffy -For the above comparison I used the calibration option in Pix4D pro. It consisted of drawing a region of interest on the image of t..." | Read more » | over 8 years ago | |||
| everydayduffy | "Thanks @Claytonb for this really interesting post. Could you detail a bit more about how you calibrated your images with reflectance targets please? " | Read more » | over 8 years ago | |||
| warren | "I really liked this note too! I'm interested in how this dataset could be used as a "test set" for software development as well. There are a range ..." | Read more » | over 8 years ago | |||
| Claytonb | "Hi Alex, I would recommend contacting Charlie Langlois at Labsphere- clanglois@labsphere.com They can make affordable($300 range)targets that are s..." | Read more » | over 8 years ago | |||
| admaltais | "Hi Claytonb, Really interesting analysis. I currently use a Canon S110 modified by Sensfly for NDVI and I wondered if there could be a big differen..." | Read more » | over 8 years ago | |||
| WhiteRabbit | "Great post. It's also worth mentioning how temperature might affect water conductivity measurements: see comment under http://publiclab.org/notes..." | Read more » | over 10 years ago |