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The creator of 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


Testing the Oil Testing Kit: identifying a "somewhat unknown" sample

by warren 16 days ago | 0 | 440 views | 2

I finally made time to test @mathew's prototype Oil Testing Kit attachment for the Public Lab Spe...

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spectrometer laser fluorescence crude

Testing if light leaks through the walls of the PL Spectrometer v3

by warren 17 days ago | 2 | 355 views | 1

Following up on a note on possible light going through the black cardstock walls of the v3 spectr...

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spectrometer dsk3 leak baseline

Web Working Group Monthly Recap 4: June 2015

by warren 28 days ago | 1 | 280 views | 0

Hello all, happy 4th in advance, and here's our latest recap from PL's Web Working Group: Foldaw...

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mapknitter software plots2 spectral-workbench

Low floor, high ceiling for Public Lab research notes

by warren 29 days ago | 19 | 827 views | 2

Since the very beginning of Public Lab, we've been aware that we're experimenting with new modes ...

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community research blog authoring

Web Working Group Monthly Recap 3: May 2015

by warren about 1 month ago | 0 | 431 views | 0

Web Working Group Monthly Recap 3: May 2015 It's been a quieter month than usual for the Web Wor...

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mapknitter software plots2 spectral-workbench

OpenAerialMap, Open Imagery Network & Public Lab's MapKnitter

by warren 2 months ago | 1 | 859 views | 2

The OpenAerialMap Beta was just launched yesterday by DevelopmentSeed - a reboot of the old OAM f...

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3d mapknitter bundleadjustment gps

Red filters in Infragram Webcams: a test

by warren 2 months ago | 14 | 620 views | 1

This test is nowhere near as comprehensive as the big one we did at LEAFFEST a few years ago, but...

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ndvi webcam infragram plants

Mobius cameras and smaller balloons

by warren 2 months ago | 7 | 600 views | 7

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 3 months ago | 0 | 615 views | 2

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 4 months ago | 0 | 634 views | 3

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 4 months ago | 37 | 833 views | 4

@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 4 months ago | 2 | 1,203 views | 3

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 4 months ago | 8 | 637 views | 5

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 5 months ago | 11 | 754 views | 1

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 5 months ago | 0 | 722 views | 2

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 6 months ago | 1 | 5,604 views | 6

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 6 months ago | 0 | 1,135 views | 2

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 6 months ago | 20 | 2,030 views | 5

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 7 months ago | 0 | 779 views | 2

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 8 months ago | 1 | 921 views | 6

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 9 months ago | 0 | 725 views | 3

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 9 months ago | 0 | 1,175 views | 1

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 9 months ago | 1 | 2,305 views | 3

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 10 months ago | 1 | 947 views | 2

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 10 months ago | 3 | 1,464 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 10 months ago | 2 | 1,733 views | 2

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 11 months ago | 8 | 1,059 views | 1

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

Coqui hot/cold tapwater test

by warren 11 months ago | 10 | 1,160 views | 2

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 11 months ago | 7 | 897 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 11 months ago | 1 | 1,144 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