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I. The Problem

Communities lack access to the tools and techniques needed to participate in decisions being made about their communities, especially when facing environmental hazards.

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II. The Collaboration

We are an open network of community organizers, educators, technologists and researchers working to create low cost solutions for monitoring air, water and land.

Discover, collaborate on, and contribute to locally important matters with the support of a global community.

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III. The Solution

Join us today, as we work together to build and inspire a community of DIY activists and explorers using simple tools to build a growing body of data about our local environments.

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Trending topics: spectrometer balloon-mapping near-infrared-camera infragram mapknitter

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Your First Contribution on Public Lab

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commented on Webcam Conversion to (Near-) Infrared

Same problem here, i fear the webcam is broke after removing the IR filter. No visible damage eit...

35 comments » about 5 years ago

Adam-Griffith commented on Folly Beach, SC - a detailed look at a $3 million beach "restoration"

From land. I hate flying from water. But at a result, I couldn't get all the land. =/

7 comments » about 5 years ago

mathew commented on In Search of Spectrometer Measurement and Calibration

Dave, I bet quite a few folks in our community have Matlab, and it would be nice if they could re...

6 comments » about 5 years ago

SeanKMcGinnis commented on Line Reel for Balloon/Kite String

@Mathew - what part of the reel collapsed on you? @Liz - thanks, I hope it works for you as well...

7 comments » about 5 years ago

warren commented on Using the Spectroscope for Analysis of Concentration (Beer's Law)

This is fantastic to see carried out so methodically.

14 comments » about 5 years ago

gonzoearth commented on Pole photography

Excellent! It would be interesting to try to move around the garden and put a vertical mosaic tog...

3 comments » about 5 years ago

mathew commented on Folly Beach, SC - a detailed look at a $3 million beach "restoration"

Glad to see it still flying! did you fly from land or water?

7 comments » about 5 years ago

warren commented on Redesign of the Foldable Mini-Spectro to hold a cuvette

I've been thinking a lot about this -- really want to design a version with an LED for a fixed, s...

7 comments » about 5 years ago

patcoyle commented on Resolving Barrel Distortion on a GoPro Hero3

Robert Mark who flies GoPro on UAV and posts to the lists indicated he has used this PTLens softw...

3 comments » about 5 years ago

cfastie commented on iFarm (Imaging For Agricultural Research and Management) field day

Partial iFarm head count, 12 names below: Ned Horning, Chris Fastie, VT, camping Don Blair, Amhe...

2 comments » about 5 years ago

Adam-Griffith commented on Coded ground control points

I'm interested in printing some of these nice panels, but don't know how to use this code. Is th...

7 comments » about 5 years ago

liz commented on Foothills Community Garden NRG Imagery

Hey Stewart, what is the updated URL path? this link is broken :(

1 comments » about 5 years ago

liz commented on Superblue

@Jeff i really like this NDVI color gradient that replaces violet with black.

31 comments » about 5 years ago

warren commented on Help requested with mapknitter- Balloon mapping of Metal processing plant in Providence, RI

I believe there's not yet a map-- lynn, can you give an exact location so people can start a mapk...

3 comments » about 5 years ago

stoft commented on In Search of Spectrometer Measurement and Calibration

Stu, thanks. Yes, there's still much to be understood about the performance limitations. Jeff, t...

6 comments » about 5 years ago

commented on Help with spectrophotometer

Had the same problem! I didn't built my spectrometer yet but i was testing my webcam with the spe...

9 comments » about 5 years ago

commented on Mobile (Android) version of Spectral Workbench

Perfect illustration thanks for this useful and informative share. logo design

28 comments » about 5 years ago

commented on Webcam Conversion to (Near-) Infrared

You should take some test shots of trees and grass outside. That's when you'll see the most dram...

35 comments » about 5 years ago

warren commented on Superblue

I've been modifying lots of cameras with the new superblue filter (using the Rosco filter you sen...

31 comments » about 5 years ago

nedhorning commented on The Scottish National Aerial Photography Scheme

Hi John, It's great to see you posting on this forum. Your experience and enthusiasm are much ap...

2 comments » about 5 years ago

warren commented on Qualitative Comparison of Percent Transmittance of Three Energy Drinks: Do the concentrations of red food coloring in energy beverages differ?

Hi, Natalie - The main mercury lines of a CFL are completely stable -- it's the smaller europium ...

5 comments » about 5 years ago

ives commented on Youth Mapping Experiences

Do you have a tutorial about how to build a delta kite? Tks

3 comments » about 5 years ago

cfastie commented on Invisible Rays

Brother Will, who sent me the lantern slides, asked a good question today: What is a lantern slid...

4 comments » about 5 years ago

natalie.orms New Contributor commented on Qualitative Comparison of Percent Transmittance of Three Energy Drinks: Do the concentrations of red food coloring in energy beverages differ?

Warren, We did use a compact fluorescent bulb to calibrate, although I wonder at the effectivene...

5 comments » about 5 years ago

patcoyle commented on Invisible Rays

Chris, what a thoughtful and informative piece. Delightful that you also had the R. W. Wood, infr...

4 comments » about 5 years ago

mathew commented on Crowd-Source Balloon Mapping @ The New Museum's "IDEAS CITY" Fest

Thanks Oscar! Just want to link to your awesome writeup on the system from Grassroots Mapping For...

1 comments » about 5 years ago

commented on better adjustable camera mount?

Salutations je suis tombé sur votre site et j'ai jeté un coup d'oeil à quelques articles et bel s...

1 comments » about 5 years ago

eustatic commented on Cuvettes leak if theyre not held upright

I ordered 30 of these, they are way expensive at $1.7 a pop but i beleve the stopper bottle would...

1 comments » about 5 years ago

chem350vsap New Contributor commented on The comparison of DVD and CD using halogen, incandescent, and fluorescent lamps

@cfastie Thank you for the comment, and we do agree that it was quite an interesting project, and...

4 comments » about 5 years ago

Juan commented on Solar Hot Air Balloons

Updated link to Bayferrox pigment: http://bayferrox.com/fileadmin/pdf/IPG/00672017_000_BF-330-EN...

18 comments » about 5 years ago

Prototype H2S sensor

by warren over 6 years ago | 0 | 0

EPA hazard review of toxic chemicals stalled

by Shannon almost 7 years ago | 0 | 2

Hydrogen sulfide sensing brainstorm

by warren almost 7 years ago | 0 | 0

The arduino patch for detecting Hydrogen Sulfide

by bha almost 7 years ago | 0 | 0

The gas leak from an old apartment.

by bha almost 7 years ago | 8 | 0

Hydrogen Sulfide Dosimeter

by Sara almost 7 years ago | 1 | 1

Hydrogen Sulfide tarnishing Silver

by Sara almost 7 years ago | 0 | 0

Conversion from µg/m3 to ppm hydrogen sulfide

by Sara almost 7 years ago | 2 | 1

Hydrogen Sulfide Information on the Gas

by Sara almost 7 years ago | 0 | 0

Open Hardware SCHOLARSHIP - deadline sept 14th

by warren almost 7 years ago | 0 | 2

Arduino + Figaro hydrogen sulfide sensor

by warren almost 7 years ago | 1 | 0

Hydrogen sulfide detection for fart detector

by warren almost 7 years ago | 0 | 1

Steps towards DIY Spectrometry

by warren almost 7 years ago | 0 | 0

Several new spectra from food samples

by warren almost 7 years ago | 0 | 0

Tail design variation on soda bottle rig

by warren almost 7 years ago | 2 | 2

A new camera capsule tail

by warren almost 7 years ago | 0 | 0

UAVs and Agriculture

by gonzoearth almost 7 years ago | 0 | 2

I sent the article to clippings too...

by Adam-Griffith almost 7 years ago | 0 | 0

BBC on PLOTS: How to create your own aerial map

by warren almost 7 years ago | 0 | 2

PLOTS map tools walkthrough

by gonzoearth almost 7 years ago | 1 | 2

Env. Justice mandate strengthened

by Shannon almost 7 years ago | 0 | 2

Adjustable 555-based shutter trigger circuit

by mathew almost 7 years ago | 0 | 1

Tyvek Fleds, Theoretical & Actual Performance

by mathew almost 7 years ago | 0 | 1