WhiteRabbit 4 research notes and 4 wiki edits | Joined almost 5 years ago






Spectrometer on a chip

by WhiteRabbit over 4 years ago | 2 | 4,050 | 1



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"Per request, I just now changed the title to something more descriptive. Thanks for your post, Chris. " | Read more » over 4 years ago
"For example, one of the differences, as noted in the comment posted in http://publiclab.org/notes/WhiteRabbit/07-27-2014/question-can-i-use-the-des..." | Read more » over 4 years ago
"This isn't my field, but I'll try to frame the question more precisely. For any given wavelength in the plot, there's a magnitude representing its..." | Read more » over 4 years ago
"Thanks for the links! Epilog: after pricing out individual filters for doing a filter wheel, I don't think I could beat the price of this one pixe..." | Read more » over 4 years ago
"I found this: http://www.vernier.com/products/sensors/col-bta/ which is interesting because unlike other low-cost spectrometers/colorimeters its s..." | Read more » over 4 years ago
"Note sure, but it seems vaguely similar to this: http://cfnewsads.thomasnet.com/images/large/553/553184.jpg except theirs appears to use filters i..." | Read more » over 4 years ago
"Great post, and great comments too. Very informative! Thanks. " | Read more » over 4 years ago
"Would acetone or some other solvent dissolve the glue holding on the IR blocker so that it can be removed without shattering it? Is it known what ..." | Read more » over 4 years ago
"Ned, Thanks very much for posting this research note. I found it to be helpful background for a related topic (http://publiclab.org/notes/WhiteRa..." | Read more » over 4 years ago
"Interesting results! " | Read more » over 4 years ago
"Thank you for the very nice write-up. FWIW, it might be that you can get light in a narrower bandwidth from a point source than from an LED: http..." | Read more » over 4 years ago
"Here's a write-up that I'm finding quite helpful: http://publiclab.org/notes/nedhorning/11-01-2013/why-a-red-filter-should-work-well-for-ndvi Eyeb..." | Read more » over 4 years ago
"Sounds like gel filters would be tricky at best, so I guess ixnay to that. How about this one? http://www.ebay.com/itm/Optical-Interference-Filter..." | Read more » over 4 years ago
"Cool! Awesome post. I suppose it's wishful (and probably foolish) thinking, but given the the low price of a filter swatch book and the seemingly..." | Read more » over 4 years ago
"Thanks for the post. Anyone here tried the pinwheel approach? " | Read more » over 4 years ago
"Hi Matthew, Thanks! Have you found any additional filter wheels worth considering since making your post? http://publiclab.org/notes/WhiteRabbit..." | Read more » over 4 years ago
"Thanks, Chris, for your thoughtful and very informative post. If I'm reading it right, perhaps using two monochrome cameras, each with the appropr..." | Read more » over 4 years ago
"Also, FWIW, not all stainless steels are the same. For instance, 316 SS is more resistant to corrosion than 304. " | Read more » almost 5 years ago
"" I can try different filters to learn how to make the best plant health images." Which filters have you found that make the best plant health ima..." | Read more » almost 5 years ago
"So, is it working properly, or is it not? The sample NDVI photos look nice.... " | Read more » almost 5 years ago
"Great post. It's also worth mentioning how temperature might affect water conductivity measurements: see comment under http://publiclab.org/notes..." | Read more » almost 5 years ago
"Be mindful how temperature may affect your saline conductivity measurements, as I tried to point out in the comments here: http://publiclab.org/not..." | Read more » almost 5 years ago
"Interestingly enough, I did just now find this $889 turf grass color meter which does, indeed, use NDVI! http://www.specmeters.com/nutrient-manage..." | Read more » almost 5 years ago
"How are you finding NVDI to be a helpful way to look at your plants? " | Read more » almost 5 years ago

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