Comments

mathew commented on EPA Method 9: Visual Determination of the Opacity of Emissions from Stationary Sources : "Looks great! i noticed two formatting issues. There seems to be a missing research note in the section: If you are unsure of whether or not this ..." | Read more » about 2 hours ago
rs806 commented on Automating NDVI calibration : "Okay thanks Ned! I had been wondering about the structure of the csv file since, judging from the script, it had quite a few columns of information..." | Read more » about 9 hours ago
pdhixenbaugh commented on How is stormwater regulated? : "As an add-on, most stormwater flows into storm drains and directly into streams without treatment. In combined sewer systems, CSOs happen periodica..." | Read more » about 23 hours ago
warren commented on A kit to design your own formaldehyde experiment? : "I managed to cobble together an Arduino program to try this out: Button turns on one of two fans, randomly. On second press, it reveals which had ..." | Read more » 2 days ago
warren commented on Testing - water depth from camera image : "This is great, thanks for posting! This reminds me of the markings by the door of some shops with security cameras. I wonder if you can buy those s..." | Read more » 2 days ago
warren commented on Air Quality Monitoring at UWEC : "My chia seeds are taking a while; I really like the idea of testing the camera out with sprouts, because a) it's pretty neat to see in timelapse b..." | Read more » 4 days ago
nedhorning commented on Automating NDVI calibration : "The CSV file for the R script is different form the table in the "Improved DIY NIR camera calibration" post. The CSV file has the reflectance value..." | Read more » 4 days ago
rs806 commented on Automating NDVI calibration : "@nedhorning Hello Ned thank you for posting the R script. I'm finding it helpful to understand the process by going through the script itself. I wa..." | Read more » 4 days ago
Dave-O commented on A Test For Household Radiation : "@warren there are several types of radiation test kits available depending on what type of radiation source you are dealing with. The type of dosi..." | Read more » 4 days ago
warren commented on A Test For Household Radiation : "Hi, I remember a radiation test of some kind in my basement when I was a kid; I wonder if it was the same type? Do you have to send this into a lab..." | Read more » 4 days ago
GreenFrogg commented on Volunteering in Smartemission network Nijmegen Netherlands : "Now on LinkedIn: The calibration model, based on Artificial Neural Network (ANN) algorithms, for low-cost air-quality sensors, developed in the Sma..." | Read more » 5 days ago
warren commented on Calibration of spectra fails : "Ah, so glad it worked. Yes, it's a lot of data for the database to handle per spectrum! " | Read more » 5 days ago
loganw commented on New possibilities for a low-cost gas camera : "@stevie: The sensor is probably too noisy to actually work for methane. There's some further stuff that seems worth trying w/r/t noise reduction th..." | Read more » 5 days ago
stevie commented on New possibilities for a low-cost gas camera : "Hi! was hearing from a number of groups in CO this week about interest in low cost methane sensing. Any updates here? " | Read more » 5 days ago
ourection commented on Aerial photos with UAV and an Android phone: first results : "Stumble upon this article. I realized that, this post was release almost 3 years ago. The technology of drones evolve a little bit and you can get ..." | Read more » 5 days ago
warren commented on DIY Formaldehyde Test Kit : "Oh, also just for ref, the idea i posted is here: https://publiclab.org/notes/warren/02-09-2017/a-kit-to-design-your-own-formaldehyde-experiment " | Read more » 5 days ago
mathew commented on Use a rubber band and knotted string to trigger a camera : "done! " | Read more » 5 days ago
liz commented on Measuring Air Quality (PM) @ new years eve during fireworks : "Fantastic map! " | Read more » 5 days ago
liz commented on ShenangoChannel.org - a dashboard for monitoring and sharing : "@warren i'm not sure if any of the Shenango Channel contributors have Public Lab usernames. Glad you are building bridges between these kindred but..." | Read more » 5 days ago
warren commented on ShenangoChannel.org - a dashboard for monitoring and sharing : "Also talking with a bunch of the folks who've been working on this and wanted to add a link to this customized version focused on Bay Area: http:/..." | Read more » 5 days ago
GreenFrogg commented on Measuring Air Quality (PM) @ new years eve during fireworks : "History of each sensor point now available for evaluation. It's downloadeble as an Exel file. Just click on the the sensor and choose: "verrijkte d..." | Read more » 6 days ago
Javi commented on Calibration of spectra fails : "Tested a scaled version of the image: 2000 pixels wide: https://spectralworkbench.org/spectrums/100017 (fail again). 1000 pixels wide: https://s..." | Read more » 6 days ago
Javi commented on Calibration of spectra fails : " Yes, always see the warning about the tags. :( The image is unprocessed, as taken from the camera. I'll try with lower image resolutions. ..." | Read more » 6 days ago
warren commented on Laser-cut the Desktop Spectrometry Kit v3 box : "Thank you Pablo for investigating this! Very helpful. " | Read more » 6 days ago
pablo commented on Laser-cut the Desktop Spectrometry Kit v3 box : "The files at https://github.com/publiclab/spectrometer3/blob/master/spec3-pdf.zip when opened in inkscape gives the correct size. " | Read more » 6 days ago
pablo commented on Laser-cut the Desktop Spectrometry Kit v3 box : "Reviewing the original .svg files I see they have the size in pixels defined, not in inches or cm. So it makes the standard conversion. Before ver..." | Read more » 6 days ago
warren commented on Calibration of spectra fails : "OK, so it's not that it's too large a file size, but it's over 4000 pixels wide, so I think it's longer than the available storage per record in th..." | Read more » 6 days ago
warren commented on Calibration of spectra fails : "Although actually now that I look, it's only 500k, so I guess I was wrong about that. Trying to re-upload myself now. " | Read more » 6 days ago
warren commented on Calibration of spectra fails : "Hi, Javi - i think one issue is that your image is really large... i wonder if you uploaded a cropped version of just the spectrum part of the imag..." | Read more » 6 days ago
warren commented on Calibration of spectra fails : "Hi, did you also see "Tag you've applied couldn't be saved"? " | Read more » 6 days ago