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The creator of GrassrootsMapping.org and co-founder and Research Director for the Public Laboratory for Open Technology and Science, Jeffrey Warren designs mapping and civic science tools and professionally flies balloons and kites. Notable software he has created include the vector-mapping framework Cartagen and orthorectification tool MapKnitter, as well as open spectral database and toolkit Spectral Workbench.

He is a fellow at MIT's Center for Civic Media, on the board of the Open Source Hardware Association, on the board of alternative education program Parts and Crafts in Somerville MA, on the advisory board of Personal Democracy Media's WeGov and an advocate of open source software, hardware, and data. He co-founded Vestal Design, a graphic/interaction design firm in 2004, and directed the Cut&Paste Labs project, a year-long series of workshops on open source tools and web design in 2006-7 with Lima designer Diego Rotalde.

Jeff holds an MS from MIT and a BA in Architecture from Yale University, and spent much of that time working with artist/technologist Natalie Jeremijenko, building robotic dogs and stuff. To find out more, visit Unterbahn.com.


Barnstars


Mobius cameras and smaller balloons

by warren 1 day ago | 3 | 171 views | 4

I've been curious about how little helium it'd take to lift a Möbius camera as we've been using f...

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balloon-mapping mylar balloon-mapping-kit mobius


Web Working Group Monthly Recap 2: April 2015

by warren 17 days ago | 0 | 348 views | 1

Welcome to the 2nd monthly Web Working Group report! I'm going to try to write faster this time; ...

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mapknitter software plots2 spectral-workbench


Web Working Group Monthly Recap

by warren about 1 month ago | 0 | 417 views | 2

Overall goals for the coming month We've begun tracking prioritization of all Public Lab coding ...

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mapknitter software plots2 spectral-workbench


DIY Formaldehyde Test Photo Card

by warren about 1 month ago | 37 | 526 views | 3

@nshapiro and I are working on a card upon which you can place a colorimetric tube for detecting ...

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formaldehyde wherewebreathe photo-card indoor-air-quality-monitoring



Public Lab talk at LibrePlanet 2015: Two Public Labs, and a call for developers

by warren 2 months ago | 2 | 738 views | 2

I gave a 10 minute lightning talk at LibrePlanet 2015 this past Saturday, where I discussed the i...

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boston open-source community web-development


Automatic placement of images in MapKnitter using GPS metadata

by warren 2 months ago | 7 | 465 views | 3

After a long wait, I've finally integrated @xvidun's feature of automatically placing images on a...

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mapknitter gps gsoc gsoc-2014


Standardizing open source hardware publication practices with contributors.json

by warren 3 months ago | 11 | 521 views | 0

Alicia Gibb of OSHWA and I (I'm on their board) cooked up the idea, chatting a few months ago, of...

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open-hardware attribution contributing oshwa


Tutorial video: Installing MapKnitter 2

by warren 3 months ago | 0 | 525 views | 1

To learn to install MapKnitter yourself, check out this video I just made: Enjoy! 12 minutes,...

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video mapknitter software developers



Announcing MapKnitter 2.0

by warren 3 months ago | 1 | 4,714 views | 3

Hello, mapmakers! The Web Working Group has just launched the final version of MapKnitter 2, int...

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balloon-mapping kite-mapping grassrootsmapping mapknitter


MapKnitter 2: Test Edition

by warren 3 months ago | 0 | 937 views | 1

Hello, mapmakers! The Web Working Group has set up a testing version of MapKnitter 2, integratin...

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balloon-mapping mapknitter web-development webworkinggroup


Planning for Spectral Workbench 2.0

by warren 3 months ago | 19 | 1,200 views | 4

Hello Spectral Workbench community! Do you wish you could do more with Spectral Workbench? Do y...

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spectrometer spectral-workbench oil-testing-kit


2015 Web Working Group report

by warren 4 months ago | 0 | 568 views | 1

Overview This quarter, we moved all major services into Rackspace hosting, taking full advantage...

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website web-development web developers



Dreaming of sensitive friends

by warren 6 months ago | 1 | 748 views | 5

I took these portraits in a session at the open water workshop at Propeller, in New Orleans, toni...

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gulf-coast workshop sensing water-quality


Table for choosing monitoring tools

by warren 6 months ago | 0 | 577 views | 2

What I want to do I spoke with Carl from the EPA at the Engadget Expand conference last Saturday...

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epa development comparison sensitivity


CFL detection by contrast, for auto-calibration

by warren 7 months ago | 0 | 965 views | 0

What I want to do I was thinking we might be able to do a crude but very fast CFL detection by m...

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spectrometer calibration cfl spectrometer-calibration


Spectral Workbench previewing and clipping warnings

by warren 7 months ago | 1 | 2,118 views | 2

Just a quick update here - I added a webcam preview to the capture interface (see above) as well ...

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spectrometer fluorescence spectral-workbench oil-testing-kit



Quantifying reflector brightness assistance

by warren 7 months ago | 1 | 772 views | 1

What I want to do At the New Orleans oil testing meetup, started using reflective foil mylar (li...

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spectrometer reflective cuvette clipping


Oil fluorescence scanning on an Ocean Optics spectrometer

by warren 8 months ago | 2 | 1,234 views | 1

What I want to do At LEAFFEST 2014, Mary, Luisa, and others reproduced the kind of fluorescence ...

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spectrometer vermont calibration leaffest


Better smoothing and equalizing graph height for comparison of oil spectra

by warren 8 months ago | 2 | 1,472 views | 1

What I want to do Based on the difficulties @mathew highlighted in his research note yesterday, ...

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spectrometer oil fluorescence spectral-workbench


Coqui draft board design on Upverter

by warren 8 months ago | 6 | 833 views | 0

What I want to do Make a simple through-hole Printed Circuit Board for the Coqui <$5 water co...

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vermont leaffest conductivity pcb



Riffle Coqui hot/cold tapwater test

by warren 8 months ago | 3 | 909 views | 1

What I want to do Some people don't drink water from the hot tap, because its sat in pipes and h...

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vermont leaffest water-quality conductivity


Webcam brightness testing for Oil Testing Kit

by warren 8 months ago | 7 | 733 views | 2

What I want to do We've had trouble getting bright enough spectra in the Oil Testing Kit with th...

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spectrometer uv fluorescence fold-up


Odyssey magazine piece on Balloon Mapping

by warren 9 months ago | 1 | 869 views | 3

Odyssey Magazine is a kids science magazine, and they ran a whole issue on remote sensing recentl...

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balloon-mapping media press odyssey


Ultra micro cuvette tests, UV LED and low-temperature fluorescence

by warren 9 months ago | 1 | 2,266 views | 0

What I want to do Just posting a variety of small tests I've done over the past few days, based ...

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spectrometer uv temperature oil



Continued literature review for the Oil Testing Kit

by warren 9 months ago | 4 | 1,034 views | 2

What I want to do I've been reading and annotating a collection of formal research papers on flu...

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spectrometer spectrum-matching fluorescence heavy-metals


Sample container search

by warren 9 months ago | 12 | 1,194 views | 0

What I want to do The square glass bottles we've used for fluorescence spectroscopy are sold out...

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spectrometer fluorescence cuvettes sample-containers


Increasing brightness of fluorescence spectra

by warren 9 months ago | 7 | 868 views | 0

What I want to do We had some trouble at the recent oil testing kit meetup in New Orleans in get...

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spectrometer kits fluorescence desktop-spectrometer


Survey of different kinds of fluorescence spectrometry, optimizing intensity

by warren 9 months ago | 13 | 1,731 views | 1

Jargon Learning more about different types of fluorescence spectroscopy -- a common type for oil...

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spectrometer fluorescence pesticides literature



Visible-range fluorescence fingerprinting of heating and motor oil

by warren 9 months ago | 1 | 840 views | 1

I forwarded this 1992 article, "Fingerprinting petroleum contamination using synchronous scanning...

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spectrometer oil fluorescence matching


Canon SD4000IS as Infragram

by warren 10 months ago | 9 | 940 views | 1

What I want to do We'd struggled a year ago to get a CMOS-sensor based Canon SD4000IS working as...

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near-infrared-camera infragram rosco red-filter