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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


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

by warren | 9 days ago | 1 | 265 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 | 13 days ago | 4 | 249 views | 1

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 | 13 days ago | 10 | 190 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 | 14 days ago | 7 | 186 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 | 16 days ago | 13 | 825 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 | 17 days ago | 1 | 223 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 | 20 days ago | 9 | 348 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 | 28 days ago | 0 | 243 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 | about 1 month ago | 0 | 231 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 | about 1 month ago | 12 | 612 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 | about 1 month ago | 5 | 541 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 | about 1 month ago | 5 | 687 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 | about 1 month ago | 1 | 201 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 | about 1 month ago | 0 | 220 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 | 3 months ago | 1 | 361 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 | 3 months ago | 0 | 388 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 | 3 months ago | 1 | 319 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 | 4 months ago | 0 | 334 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 | 4 months ago | 1 | 583 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 | 4 months ago | 4 | 523 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 | 4 months ago | 1 | 716 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 | 5 months ago | 5 | 1,548 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 | 5 months ago | 3 | 1,347 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 | 6 months ago | 7 | 762 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



Sampling extension for smartphone specs

by warren | 7 months ago | 8 | 944 views | 2

Mathew Lippincott and I have been talking about the Oil Sampling Kit and how to streamline it eve...

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spectrometer cuvettes sampling smartphone-spectrometer


Public Lab Community Newsletter February 7, 2014

by warren | 7 months ago | 0 | 501 views | 0

Hello everyone -- your weekly dose of Public Labbery is here, with a full agenda for the next few...

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Oil Testing Kit: draft materials list

by warren | 7 months ago | 33 | 1,384 views | 2

Update: Alpha kits are now available: http://store.publiclab.org/products/spectrometry-sampling-k...

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oil-spill oil oil-spill-toolkit fluorescence


Public Lab community newsletter 2.01.14

by warren | 7 months ago | 0 | 600 views | 0

Hello everyone! There are lots of upcoming events, including one tomorrow in Somerville, MA -- i...

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Thermal flashlight Visualight shield

by warren | 7 months ago | 25 | 1,307 views | 0

What I want to do In the comments of this post, we've been exploring how to make an expansion to...

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thermal-photography thermal-flashlight visualight pcb


Reagent-based PAH, VOH, PCB testing kits for soil and water, with pricing

by warren | 7 months ago | 0 | 1,132 views | 0

We need established tests to compare our own tests to, even if the established tests are expensiv...

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spectrometer field-testing soil testing