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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


Preview of new Spectrums and Sets pages on Spectral Workbench

by warren 15 days ago | 0 | 348 views | 1

Hi, all - I just deployed preview versions of the new Spectral Workbench 2.0 Sets and Spectrums p...

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web-development software spectral-workbench development

Prototyping simple paper connections

by warren 18 days ago | 0 | 408 views | 1

What I want to do I'm thinking about easy to make and easy to manufacture paper linkages that re...

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spectrometer papercraft die-cutting silhouette-cameo

Wavelength range limiting in Spectral Workbench

by warren 27 days ago | 0 | 397 views | 0

Just a quick announce -- after the big revision of Spectral Workbench went live last week, I also...

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spectrometer web-development software spectral-workbench

Web Working Group Monthly Recap 5: July 2015

by warren about 1 month ago | 0 | 293 views | 0

Hello again - a lot has happened since last month's Web Working Group recap, and mostly it's happ...

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mapknitter web-development software plots2

Sneak preview of new Spectral Workbench sets display

by warren about 1 month ago | 0 | 390 views | 0

Check it out here: And see the embed here:

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spectrometer software spectral-workbench

Silhouette Cameo desktop paper cutter for prototyping

by warren about 1 month ago | 4 | 425 views | 1

What I want to do I've been wanting to do more laser cutting to prototype things like the Oil Te...

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spectrometer oil-testing-kit papercraft paper

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

by warren about 1 month ago | 0 | 664 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 about 1 month ago | 2 | 524 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 2 months ago | 1 | 425 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 2 months ago | 20 | 1,069 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 3 months ago | 0 | 513 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 3 months ago | 1 | 1,014 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 3 months ago | 14 | 757 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 3 months ago | 7 | 722 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 4 months ago | 0 | 713 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 5 months ago | 0 | 710 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 5 months ago | 38 | 968 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 5 months ago | 2 | 1,428 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 6 months ago | 8 | 727 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 6 months ago | 11 | 891 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 6 months ago | 0 | 819 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 7 months ago | 1 | 6,008 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 7 months ago | 0 | 1,243 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 7 months ago | 20 | 2,377 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 8 months ago | 0 | 903 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 10 months ago | 1 | 1,009 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 10 months ago | 0 | 826 views | 4

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 10 months ago | 0 | 1,269 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 11 months ago | 1 | 2,394 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 11 months ago | 1 | 1,036 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