Comments

MadTinker commented on DFRobot TDS sensor first look : "@cfastie FWIW I used a Kalman filter algorithm for my TDS analyses with data from a similar setup data logger setup. I believe that my original im..." | Read more » about 7 hours ago
whiteice217 commented on How do I make a air filter without filters? : "I don't know if this will help but I started looking up what exactly and electrostatic air filter is and found this really good page. https://asm-a..." | Read more » about 8 hours ago
cfastie commented on DFRobot TDS sensor first look : "What do you guys think, is it okay to use the mean instead of the median? @pdhixenbaugh, @MadTinker, @Shanlter, @rockets " | Read more » about 11 hours ago
mprof9 commented on Calibrating low cost air quality sensor (1/2) : "Hi, I just would like to share a bit of work I did here: https://publiclab.org/notes/mprof9/11-07-2017/low-cost-sensor-for-air-quality-monitoring I..." | Read more » about 17 hours ago
MaggPi commented on NDVI microscopy : "Wow, thanks for the great response! I did this fairly quickly and I will try to catch up with the questions: did you illuminate these separate..." | Read more » about 17 hours ago
cfastie commented on NDVI microscopy : "MaggPi, This approach is quite intriguing. You are correct that NDVI was invented and then used for 40 years primarily for high altitude aerial or..." | Read more » about 23 hours ago
cfastie commented on NDVI two camera system calibration : "That figure has been in a wiki since April 2012: https://publiclab.org/wiki/ndvi-plots-ir-kit " | Read more » 1 day ago
warren commented on Plant Health NDVI -White Balance : "@warren awards a barnstar to Claytonb for their awesome contribution! " | Read more » 1 day ago
warren commented on The spectrum gets vertical no matter how I upload the picture. : "hi, i believe this is a new bug! Would you be able to open an issue at https://github.com/publiclab/spectral-workbench/issues please, and we can tr..." | Read more » 1 day ago
warren commented on Calibrating low cost air quality sensor (1/2) : "Hi, @sagarpreet -- do you think the sensor data @jiteovien referenced in http://www.dem.ri.gov/programs/air/air-monitoring.php would be possible to..." | Read more » 1 day ago
warren commented on Dual NDVI Ultra Probe Unit : "Circling back to this -- still love this design! NASA #aren folks just mentioned this sensor: https://www.metergroup.com/environment/articles/buy..." | Read more » 1 day ago
warren commented on Use Image Sequencer for NDVI plant analysis with 2 images : "Just a note to self - as we plan out auto-registration features for this, could be good to look at #image-registration ! " | Read more » 1 day ago
warren commented on NDVI two camera system calibration : "Chris's post and graph are terrific. This came up again in discussion with #aren project members and I finally found this graph again! Did it ever ..." | Read more » 1 day ago
jeffalk commented on Calibrating low cost air quality sensor (1/2) : "Some hopefully helpful comments: particulate matter in air is very different than lead concentration in soil. PM2.5 has a regional aspect. To see t..." | Read more » 1 day ago
warren commented on NDVI microscopy : "https://publiclab.github.io/image-sequencer/examples/#steps=ndvi(filter:blue),colormap(colormap:fastie) " | Read more » 1 day ago
warren commented on NDVI microscopy : "We also just tried using different colormaps, with some success! Stretched: And "fastie": " | Read more » 1 day ago
warren commented on NDVI microscopy : "I'm just presenting on your great post on the NASA AREN call right now (https://publiclab.org/aren) and we have questions! did you illuminate the..." | Read more » 1 day ago
SuziT9 commented on NDVI microscopy : "Great job, @MaggPi....this is super cool! " | Read more » 1 day ago
warren commented on Raspberry pi operating system for Lego spectrometer : "Wow, eager to hear about your #colorimetry work! " | Read more » 1 day ago
vjpixel commented on Are there any DIY equipment that measure dissolved oxygen levels in water? : "InfoAmazonia built a hardware that measure DO. The schematics are online: https://github.com/InfoAmazonia/rede-hardware " | Read more » 1 day ago
warren commented on NDVI microscopy : "@cfastie you might enjoy this one!  On Wed, Jul 18, 2018 at 5:16 AM \<notifications@publiclab.org> wrote: Public Lab contributor MaggPi jus..." | Read more » 1 day ago
EdMallon commented on An Arduino Based UnderWater Sensor Platform : "While the logger core is generic, surface deployments tend to use the 4" housing (which is easy to build) while the underwater deployments (~ half ..." | Read more » 1 day ago
warren commented on NDVI microscopy : "@warren awards a barnstar to MaggPi for their awesome contribution! " | Read more » 1 day ago
warren commented on NDVI microscopy : "Wow, this is really amazing! :tada: " | Read more » 1 day ago
warren commented on MapKnitter map of Fontainebleau State Park Balloon RBG : "Wow, this is a great map! " | Read more » 1 day ago
gauravano commented on Draft Feature : "Hi @warren @stevie, I have added all the FAQ's regarding Draft feature here, please tell if any more required. Thanks! " | Read more » 1 day ago
warren commented on Lego spectrometer - Publiclab design : "That's too bad - we can possibly start shipping keys with these if this affects everyone. A meter is pretty bad! We couldn't lengthen the case that..." | Read more » 2 days ago
warren commented on Prepare an SD card for a Raspberry Pi camera from scratch : "Glad to hear it. I've noted that not all WiFi networks work, and sometimes trying on a different one (like the one I broadcast from my phone) works..." | Read more » 2 days ago
warren commented on Integrating User instructions into the Community Microscope build materials : "We've requested a sample of v4 and also placed an initial order! We're going to have these precut by a coroplast cutting service (that does politic..." | Read more » 2 days ago
stevie commented on Leaflet Environmental Layer Library - Part 2 : "Looks great! Could the layers also have a pop-out that explain what they are, where they are from and where people can learn more when you click on..." | Read more » 2 days ago