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Sandbox projects

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sandbox-sitemap

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Host a Barnraising

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Public Lab Barnraisings

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Website Basics

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Urban greening in Nottingham

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The Sand Sentinel Program

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Public Lab Fellows Program

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sandbox-community-microscope-kit-revamp

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sandbox-streamline-coqui

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educators

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values

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Datasource

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Topic Pages

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warren commented on Photoreactive purple dye: can it block wavelengths longer than green? over 2 years ago

Hmm, that's a bit mysterious -- the purple dye shouldn't be strong enough to completely block tha...

gretchengehrke commented on Barnraising 2016 Photos over 2 years ago

Sunrise at LUMCON. No filter! (photo by Gretchen Gehrke)

gretchengehrke commented on Barnraising 2016 Photos over 2 years ago

Cocodrie early morning. No filter. (by Gretchen Gehrke)

gretchengehrke commented on Barnraising 2016 Photos over 2 years ago

Cocodrie wetland. No filter. (photo by Gretchen Gehrke)

klie commented on Where can I get a latching push button that isn't electrical? over 2 years ago

Update: Talking it out actually just helped me think of better search terms, and I think I found...

klie commented on Where can I get a latching push button that isn't electrical? over 2 years ago

Thank you @sarasage! I'm going to check out both of these sites. What I'm looking for, though, ...

sarasage commented on Where can I get a latching push button that isn't electrical? over 2 years ago

www.digikey.com sells all manner of switches, too.

sarasage commented on Where can I get a latching push button that isn't electrical? over 2 years ago

Have you checked www.sciplus.com? Is this along the lines of what you're looking for? https://www...

cfastie commented on an answer about can anyone help me with my ndvi ( image processing ) ? over 2 years ago

It's very easy to convert a photo from a red-filtered Mobius (or other) camera to color NDVI usin...

aldrin commented on Multispectral raspberry pi: first light (NDVI images) over 2 years ago

Sir, did you use any technique or calibration of pinoircamera's white balance?

pablo commented on Intro al espectrómetro de Public Lab en la Bilbao Maker Faire over 2 years ago

Hola @xose, fue una introducción rápida a cómo construirlo e invitar a usarlo. Vinieron a la pres...

xose commented on Intro al espectrómetro de Public Lab en la Bilbao Maker Faire over 2 years ago

Woooow @pablo que buenisima noticia. Por desgracia me encuentro en A Coruña en el Ateneo de Proto...

stoft commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

There's still some clipping (source light intensity too high) so a comparison, using a cardboard ...

warren commented on A month in the field and nothing to show almost 3 years ago

Also -- just a thought -- there are a few others testing this out too, so if you could take some ...

warren commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

Oh, interesting -- what types of bulbs were they?

xose commented on Fresh air collector almost 3 years ago

First approach. Now we're powering it up using a potentiometer to control the fan revolutions and...

pablo commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

I've changed the bulb and used a less powerful one and I got good results: https://spectralworkbe...

pablo commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

Hi! I've followed all the recommendations (except refocus) but the blue hump is still there: http...

warren commented on Check out these Activity Grids almost 3 years ago

Hi, Will -- sorry for the slow response, a lot happened (not least the Barnraising). Yes, there ...

warren commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

Great idea to constrain and track this down -- it might make a good new question in its own right...

stoft commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

No I don't think it is just inherent in the camera. The blue led has a fairly narrow spectrum (sa...

xose commented on Is there an iPhone app for foldable spectrometer? almost 3 years ago

Hi there! I've been trying to use the spectralworkbench with IOS with no success using Browser ap...

warren commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

OK - i guess the blue bulge is just a limitation of the camera... i had forgotten exactly. But if...

pablo commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

I've focuses to 22cm, removed blue LED: https://spectralworkbench.org/spectrums/91509 The blue hu...

warren commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

I think the blue hump was something we saw a lot on those SYBA webcams, and believe it was relate...

stoft commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

I note that 1) your spectrum does "fit" though it is 2) "offset" a bit from center which is likel...

warren commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

I think you can use this old focus tutorial and do it empirically: https://publiclab.org/wiki/dsk...

pablo commented on an answer about Is the webcam from spectrometer v2.0 suitable for the upgrade to 3.0? almost 3 years ago

Thanks @stoft and @warren. I've left the DVD as it was in spectrometer v2.0 (test: https://spectr...

warren commented on A month in the field and nothing to show almost 3 years ago

Oh, that's great to hear. Good luck and we'll talk soon i hope!

bkleist commented on A month in the field and nothing to show almost 3 years ago

@warren, I have gotten ahold of Dr. Pierce, and he said that the camera has come in, and is ready...

Grassroots Newark Continues

by Hudonnoodles over 8 years ago | 0 | | 30 | 0

Notes from Tuesday PLOTS staff call

by warren over 8 years ago | 0 | | 51 | 0

Spectrometry 1st week plan

by Alex-McCarthy over 8 years ago | 0 | | 60 | 2

Extra-slow SD cards for balloon mapping

by warren over 8 years ago | 1 | | 1,486 | 2

NDVI-NRG infrared tests from an airplane

by warren over 8 years ago | 0 | | 74 | 0

Mapper interview: Dawn McKinney

by warren over 8 years ago | 0 | | 49 | 0

Barataria Bay Flyover

by adam-griffith over 8 years ago | 0 | | 44 | 1

Port Sulphur reference map

by warren over 8 years ago | 0 | | 29 | 2

Quantify wetland from aerial UV photo

by cesarharada over 8 years ago | 1 | | 112 | 1

Third thermal photo

by warren over 8 years ago | 0 | | 67 | 0

Thermal photo 2

by warren over 8 years ago | 0 | | 55 | 0

First thermal photo

by warren over 8 years ago | 0 | | 54 | -1

Gowanus Canal balloon tests

by warren over 8 years ago | 0 | | 36 | 2

Guides wiki page

by warren over 8 years ago | 0 | | 28 | 2

Pyrex thermal infrared transmissivity

by warren over 8 years ago | 0 | | 137 | -1

NRG image of Lima from balloon

by warren over 8 years ago | 1 | | 85 | 0

Focus shift in bifocal filter?

by warren over 8 years ago | 1 | | 103 | -1

Kinect for 3d mapping from a car

by warren over 8 years ago | 2 | | 87 | 0

Images arriving from loose flight over Lima

by warren over 8 years ago | 0 | | 36 | -1

Nice spectra

by warren over 8 years ago | 0 | | 1,408 | 2

DIY Windmill and Solar Light Workshop

by warren over 8 years ago | 1 | | 36 | 2

Taller DIY de turbinas y luces solares

by warren over 8 years ago | 1 | | 18 | 2







A shared knowledge base for community science

New page by warren 4 days ago

Sandbox projects

New edit by liz 4 days ago - changes

sandbox-sitemap

New edit by liz 4 days ago - changes

sandbox-sitemap

New edit by liz 4 days ago - changes

sandbox-sitemap

New edit by liz 4 days ago - changes

sandbox-sitemap

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sandbox-sitemap

New page by warren 5 days ago

Host a Barnraising

New edit by warren 5 days ago - changes

Public Lab Barnraisings

New edit by liz 5 days ago - changes

Website Basics

New edit by stevie 7 days ago - changes

The Sand Sentinel Program

New page by mimiss 20 days ago

sandbox-streamline-coqui

New page by warren 26 days ago

Notifications

New page by warren 26 days ago

educators

New page by warren 28 days ago

values

New page by stevie about 1 month ago

Datasource

New page by warren about 1 month ago

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