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Author Comment Last activity Moderation
nedhorning "Chris - I'll email you the master list with all of the reflectance values for each target since they aren't really useful without the images. You n..." | Read more » almost 9 years ago
cfastie "Cool. Ned, do you have a reflectance csv file for all of the calibration targets in the test photos from iFarm (the lead image)? And a key for whic..." | Read more » almost 9 years ago
mathew "nice bacronym! " | Read more » over 9 years ago
WhiteRabbit "Great post, and great comments too. Very informative! Thanks. " | Read more » over 9 years ago
liz "I think this is the link to Gena's photoset from June 1 : https://www.flickr.com/photos/gwirth/sets/72157644653022417/cal " | Read more » almost 10 years ago
ronhuber "I think those cheap riffle crickets would be great! Can we set a time and date to meet and test deploy one or more? One assumes the 'seeps' w..." | Read more » almost 10 years ago
warren "@donblair - is there a way we could use multiple riffle "crickets" to look at where point sources of heavy metal pollution are? Or some other way w..." | Read more » almost 10 years ago
warren "Cool yes I forgot about that dusjagr! Sketch of audio powered LED: " | Read more » almost 10 years ago
eustatic "nice map, dig the bubbles " | Read more » almost 10 years ago
dusjagr "btw... we have continued a lot... see what urs made: http://hackteria.org/wiki/DIY_NanoDrop m " | Read more » almost 10 years ago
warren "Another thought. To avoid needing batteries for the LEDs, I wonder if we could power them off the headphone jack of a phone... Like this laser acce..." | Read more » almost 10 years ago
warren "Well I like the angle in part because it seems convenient for viewing on a table or countertop... Almost like a lectern. And we can adhere a phone ..." | Read more » almost 10 years ago
amysoyka "I was thinking about this very issue today. It just doesn't make sense to hold the phone at an angle though - how can we rearrange this idea so tha..." | Read more » almost 10 years ago
danbeavers "I may be really off base here so play nice if I am. What sort of literature search has occurred regarding peak detection? I did a search and imme..." | Read more » almost 10 years ago
mathew "beautiful! " | Read more » almost 10 years ago
warren "The existing peak detection code, and notes on its shortcomings, is here: https://github.com/jywarren/spectral-workbench/blob/master/webserver/publ..." | Read more » almost 10 years ago
JSummers "Very nice. I suspect that the limitation on accessible wavelengths is due to UV due to absorbance by the plastic optics and will not be improved by..." | Read more » about 10 years ago
mathew "Nathan McCorkle linked to a teardown of a commercial nanodrop: https://www.takeitapart.com/guide/66 an alternate to the droplet appears to be an a..." | Read more » about 10 years ago
mathew "this is super rad! I was bummed when I saw that the nanodrop was patented, so I looked at the patents. There are two earlier devices though: http:..." | Read more » about 10 years ago
eustatic "http://publiclab.org/notes/eustatic/01-07-2014/kite-fisheye-photos-of-bayou-st-john-restoration here is my example of live targeting the kite with..." | Read more » about 10 years ago
eustatic "willie, that is really cool. i would do the same thing for new orleans--what about a stormwater tag? http://publiclab.org/tag/stormwater http://p..." | Read more » about 10 years ago
liz "This is fantastic Willie! How long is the flooding season in Jakarta? " | Read more » about 10 years ago
warren "Hmm, I'm worried that the ~840nm spike is just a camera artifact -- see how it's also represented in this spectrum of a halogen light through coca-..." | Read more » over 10 years ago
warren "Another thing to note is that the purple line is way out in the infrared (far enough that we know this despite the miscalibration) and NIST data we..." | Read more » over 10 years ago