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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 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 opensource 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


Oil fluorescence scanning on an Ocean Optics spectrometer

by warren | 7 days ago | 1 | 240 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 days ago | 2 | 387 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 | 16 days ago | 6 | 198 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 | 17 days ago | 3 | 230 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 | 18 days ago | 7 | 239 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 | 27 days ago | 1 | 323 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 | about 1 month ago | 1 | 1,321 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 | about 1 month ago | 4 | 401 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 | about 1 month ago | 12 | 327 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 | about 1 month ago | 7 | 290 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 | about 1 month ago | 13 | 935 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 | about 1 month ago | 1 | 291 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 | about 1 month ago | 9 | 466 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


Equalizing area of spectral graphs for comparison

by warren | 2 months ago | 0 | 307 views | 2

What I want to do During the development of testing techniques with spectrometers in the Public ...

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spectrometer fluorescence spectral-workbench spectral-workbench-api


Recent improvements to PublicLab.org

by warren | 3 months ago | 0 | 294 views | 4

Overview The past few months have been focused on intense coding, optimization, and feature refi...

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website plots2 developers code


Infragram kite mapping at Fab10 Barcelona

by warren | 3 months ago | 12 | 754 views | 0

I held two workshops at Fab 10 (http://fab10.org) where we launched an Infragram Point & Shoo...

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near-infrared-camera kite-mapping barcelona spain



Spectrometer slit width thoughts

by warren | 3 months ago | 5 | 638 views | 0

What I want to do I'd like to propose a couple changes to the optical slit based on observations...

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spectrometer kits slit sensitivity


Oil testing spectrometry workshop at Fab 10

by warren | 3 months ago | 5 | 782 views | 1

I ran a small session on developing the oil test kit spectrometer yesterday in Barcelona (http://...

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spectrometer workshop fluorescence response:8973


Presentation at FAB10 in Barcelona

by warren | 3 months ago | 1 | 240 views | 0

I'm presenting today at FAB10 (http://fab10.org) and wanted to share my presentation! https://do...

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barcelona spain presentation fab10


Reimagining the data lifecycle

by warren | 3 months ago | 0 | 261 views | 0

This article, by Jeffrey Warren and Shannon Dosemagen was first published in the summer of 2011 i...

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gmf grassrootsmappingforum forum with:shannon



Idea for<$5 analog thermal fishing bob

by warren | 4 months ago | 1 | 411 views | 3

Using 555 timers and no Arduino... Only red/blue LEDs!

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water-quality thermal-fishing-bob thermal open-water


Public Lab community newsletter 5.23.14

by warren | 4 months ago | 0 | 439 views | 0

Hello folks - the Northeast Barnraising is quickly approaching, and research discussions on our m...

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Viewing mica through a polarizer

by warren | 4 months ago | 1 | 358 views | 0

Mathew Lippincott has been collecting and posting research on low-cost approaches to silica detec...

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dust smartphone silica particulate


Public Lab Community Newsletter 5.4.14

by warren | 5 months ago | 0 | 372 views | 0

Featured image: an Infragram-converted Mobius Action Cam false-color image, by Mathew Lippincott ...

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Public Lab trading cards

by warren | 5 months ago | 1 | 682 views | 5

For highlighting awesome enviro monitoring and other stories. Collect them all!

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organizers case-studies trading-cards


$0.75 lead testing color strips

by warren | 6 months ago | 4 | 563 views | 1

Ok -- how does this work and can we DIY this?

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soil kit lead strip


Infragram featured in April's issue of Wired

by warren | 6 months ago | 1 | 803 views | 3

Just got this at the newsstand -- pretty neat, if brief! Woohoo!

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media infragram wired


Mobius Action Cam Infragram tests

by warren | 6 months ago | 5 | 1,763 views | 0

What I want to do Based on an ongoing discussion about whether the Mobius Action Cam (a ~70 gram...

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near-infrared-camera ndvi infragram infragram-sandbox



Selenium detection methods & ideas on e-cigarette atomizers for DIY analysis

by warren | 6 months ago | 3 | 1,437 views | 2

This PDF has some great notes on all different approaches for measuring selenium in soil, water, ...

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spectrometer emission-spectroscopy flame-spectroscopy flame


Yellow smoke plume at Lawrence Point, Queens

by warren | 7 months ago | 7 | 859 views | 0

Yesterday, I was riding the Amtrak train past Lawrence Point in Queens, NY, and saw twin smokesta...

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new-york-city queens plume watchdog