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SoC ideas

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New edit by warren

SoC ideas

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OHL

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CERN-OHL-1.1

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OpenHour

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5 months ago | 0 | | 141,465 | 27

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New York City

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Community Microscope Kit

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5 months ago | 0 | | 1,219 | 10

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Community Microscope Kit

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5 months ago | 0 | | 1,219 | 10

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sandbox-2

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New edit by liz

Water quality

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Comment templates

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infrapi

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First-time posters

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LEL

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Infragram Pi

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Infragram Pi Camera

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Pi Builder

6 months ago | 0 | | 30 | 1

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UI feedback template

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Photo comment template

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LaPa commented on Raspberry + NoIR cam + Sensors to detect water stress of the plants during their growing almost 3 years ago

Thank you Nedhorning, nice to see your answers in the my research note! I'm reading your notes ab...

stoft commented on Spectrometer Noise Solution? almost 3 years ago

@Warren, thanks for the suggestions. Take a look (above) at the two new plots which replace the o...

warren commented on Thinking about a more stable spectrometer... almost 3 years ago

Thanks, Guillaume851 - I've seen yours and it does look very rigid, thank you! Part of the design...

Guillaume851 commented on Thinking about a more stable spectrometer... almost 3 years ago

Warren, I know that the spectrometer that I have built is extremely rigid, but it is not made of...

stoft commented on Comment piece in Nature about peer review almost 3 years ago

@Warren's thought about 'publishing assistance' is a good one and one which inherantly contains a...

warren commented on Question: I want to do citizen bee science almost 3 years ago

If you're at all interested in reflectance measurements, I posted a sketch for a reflectance setu...

warren commented on Spectrometer Noise Solution? almost 3 years ago

Great post! I love how you so clearly stated some of the conclusions. A few thoughts: maybe I ...

sara commented on Deploying UNC passive sampler on South Side of Chicago almost 3 years ago

Super excited to read about this project, are their more recent notes on how your project's progr...

nedhorning commented on Raspberry + NoIR cam + Sensors to detect water stress of the plants during their growing almost 3 years ago

I have the reflectance spectral for these materials and can provide a PDF, Excel, or CSV file of ...

stoft commented on PLab 3 Spectrometer Upgrade Prototype almost 3 years ago

Interesting thought, but the camera is (ideally) focused on the slit so adding a second one next ...

viechdokter commented on PLab 3 Spectrometer Upgrade Prototype almost 3 years ago

Sounds great so far. One question: if you put a second slit right in front of the grating/webcam...

viechdokter commented on Noise by colour almost 3 years ago

@warren: I just had a look at an old spectrum CSV file of yours (3 years ago): https://spectralw...

warren commented on Noise by colour almost 3 years ago

I went ahead and created a specific issue for native 8-bit storage: https://github.com/publiclab/...

viechdokter commented on Noise by colour almost 3 years ago

Talking about hung-up scripts, it often is a pain in the neck to login to SBW. "Do you trust this...

stoft commented on Noise by colour almost 3 years ago

It's ok to have a 'scaled' data file -- but ONLY if that file is clearly identified as such ... l...

warren commented on Noise by colour almost 3 years ago

Hi, all -- 2.55 is definitely related to the 0-255 value. The code that generates the CSV is here...

viechdokter commented on Noise by colour almost 3 years ago

I could re-scale but ... when everybody here gets the same minimum 2.55 increments here and you w...

LaPa commented on Raspberry + NoIR cam + Sensors to detect water stress of the plants during their growing almost 3 years ago

If anyone in PublicLab has a spectrometer and can get the proper calibration targets I could buy ...

stoft commented on Noise by colour almost 3 years ago

Hmmm, well the RAW data should have the same scale units which would be unsigned 8-bit integer fr...

viechdokter commented on Noise by colour almost 3 years ago

I took the data from the CSV files that Spectral Workbench provides with my spectra. I had a look...

stoft commented on Noise by colour almost 3 years ago

Well, except there's still a problem with the plot. The smallest increment looks to be '4 steps' ...

viechdokter commented on Noise by colour almost 3 years ago

Okay, here I combined the 4 channel max/min-difference curves in one diagram so they have the sam...

FortunaWolf commented on Question: I want to do citizen bee science almost 3 years ago

Forager bees work only 1 species of flower on any single flight, so when you collect individual p...

viechdokter commented on Question: I want to do citizen bee science almost 3 years ago

Two thoughts: first, the bees sometimes bring in different sorts of pollen, its not 100% sorted ...

viechdokter commented on Noise by colour almost 3 years ago

Talking about bits and quantization: I also noticed that certain values (2.55 and multiples there...

viechdokter commented on CFL Repeatability Study on 6 CFL spectrums about 3 years ago

Well, you could send your lamp here to Germany but I guess you will find some other community mem...

dhaffnersr commented on CFL Repeatability Study on 6 CFL spectrums about 3 years ago

hello viechdokter! thanks for checking this out, yes all 6 look very similar, only very small di...

stoft commented on Noise by colour about 3 years ago

Yes, it's called quantization; the camera only has 8-bits and the scale of the two plots is likel...

warren commented on Noise by colour about 3 years ago

Hmm, very interesting -- without vertical scale its hard to say though - I believe the "plateaus"...

viechdokter commented on Noise by colour about 3 years ago

@warren:They would be low-noise green if you average them. ;-) @stoft: BTW, I noticed that cur...

Port Sulphur reference map

by warren about 8 years ago | 0 | | 1,290 | 2

Quantify wetland from aerial UV photo

by cesarharada about 8 years ago | 1 | | 4,634 | 2

Third thermal photo

by warren about 8 years ago | 0 | | 1,733 | 1

Thermal photo 2

by warren about 8 years ago | 0 | | 1,679 | 1

First thermal photo

by warren about 8 years ago | 0 | | 1,685 | 0

Gowanus Canal balloon tests

by warren about 8 years ago | 0 | | 1,258 | 2

Guides wiki page

by warren about 8 years ago | 0 | | 1,566 | 2

Pyrex thermal infrared transmissivity

by warren about 8 years ago | 0 | | 4,802 | 0

NRG image of Lima from balloon

by warren about 8 years ago | 1 | | 2,586 | -1

Focus shift in bifocal filter?

by warren about 8 years ago | 1 | | 2,768 | 0

Kinect for 3d mapping from a car

by warren about 8 years ago | 2 | | 3,230 | 0

Images arriving from loose flight over Lima

by warren about 8 years ago | 0 | | 2,112 | 0

Nice spectra

by warren about 8 years ago | 0 | | 1,406 | 2

DIY Windmill and Solar Light Workshop

by warren about 8 years ago | 0 | | 11 | 2

Taller DIY de turbinas y luces solares

by warren about 8 years ago | 1 | | 10 | 2

Great shot for NDVI

by warren over 8 years ago | 0 | | 2,387 | 0

Example NDVI usage in a vineyard

by warren over 8 years ago | 1 | | 4,673 | 0

Bifocal infrared/visible filter on a camera

by warren over 8 years ago | 0 | | 2,388 | 0

Bifocal infrared/visible filter at Lima workshop

by warren over 8 years ago | 6 | | 1,517 | 0

DIY Spectrometry Workshop in Lima, Peru

RSVP

Event by warren over 8 years ago | 0 | | 260 | 0

NDVI test in Lima Peru

by warren over 8 years ago | 4 | | 2,855 | 0

Very clear spectrum through pineapple

by warren over 8 years ago | 7 | | 2,180 | 0







A shared knowledge base for community science

New edit by warren about 2 months ago - changes

SoC ideas

New edit by warren about 2 months ago - changes

SoC ideas

New page by warren 5 months ago

OHL

New edit by warren 5 months ago - changes

CERN-OHL-1.1

New edit by warren 5 months ago - changes

OpenHour

New edit by Bronwen 5 months ago - changes

New York City

New edit by warren 5 months ago - changes

Community Microscope Kit

New edit by warren 5 months ago - changes

Community Microscope Kit

New edit by warren 5 months ago - changes

sandbox-2

New edit by liz 5 months ago - changes

Water quality

New page by warren 5 months ago

Comment templates

New page by warren 6 months ago

infrapi

New page by warren 6 months ago

First-time posters

New page by warren 6 months ago

LEL

New page by warren 6 months ago

Infragram Pi

New page by warren 6 months ago

Infragram Pi Camera

New page by warren 6 months ago

Pi Builder

New page by warren 6 months ago

UI feedback template

New page by warren 6 months ago

Photo comment template

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